EXOGEN INC
10-K, 1996-12-27
ELECTROMEDICAL & ELECTROTHERAPEUTIC APPARATUS
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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                 ---------------

                                    FORM 10-K

(Mark One)

X   ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT
    OF 1934 [FEE REQUIRED]

    For the fiscal year ended          September 30, 1996
                                       ------------------ 

                                       OR

    TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE
    ACT OF 1934 [NO FEE REQUIRED]

    For the transition period from                             to

                         Commission file number 0-26154


                                  EXOGEN, INC.
             (Exact name of registrant as specified in its charter)


         Delaware                                             22-3208468
- --------------------------------------------------------------------------------
(State or other jurisdiction of                           (I.R.S. Employer 
 incorporation or organization)                          Identification No.)

     10 Constitution Avenue
     P. O. Box 6860, Piscataway  NJ                             08855
- --------------------------------------------------------------------------------
(Address of principal executive offices)                      (Zip Code)

       Registrant's telephone number, including area code (908) 981-0990



          Securities registered pursuant to Section 12(b) of the Act:

                               Title of each class
                    Name of each exchange on which registered
                                      None


                                      None


          Securities registered pursuant to Section 12(g) of the Act:

                         Common Stock, $.0001 par value
                                (Title of Class)


                                (Title of Class)


<PAGE>
         Indicate  by check  mark  whether  the  registrant:  (1) has  filed all
reports  required to be filed by Section 13 or 15(d) of the Securities  Exchange
Act of 1934 during the preceding 12 months (or for such shorter  period that the
registrant was required to file such reports),  and (2) has been subject to such
filing requirements for the past 90 days.  Yes  [ X ]     [ No ]

         Indicate by check mark if disclosure of delinquent  filers  pursuant to
Item 405 of Regulation S-K is not contained  herein,  and will not be contained,
to the best of  registrant's  knowledge,  in  definitive  proxy  or  information
statements  incorporated  by  reference  in Part  III of this  Form  10-K or any
amendment to this Form 10-K. [  ]

         While it is  difficult  to  determine  the  number of  shares  owned by
non-affiliates,  the  registrant  estimates  that the aggregate  market value of
outstanding  Common Stock on December  19, 1996 (based upon the closing  selling
price of such Common Stock on the Nasdaq  National  Market on December 19, 1996)
held by non-affiliates  was approximately  $23.3 million.  For this computation,
the  registrant  has excluded the market value of all shares of its Common Stock
reported as beneficially  owned by officers,  directors and certain  significant
stockholders of the registrant. Such exclusion shall not be deemed to constitute
an admission that any such stockholder is an affiliate of the registrant.

         As of December 19, 1996, there were outstanding 9,911,067 shares of the
registrant's Common Stock, par value $.0001.


                       DOCUMENTS INCORPORATED BY REFERENCE

         Proxy  Statement  of Exogen,  Inc.  relative  to the Annual  Meeting of
Stockholders to be held on February 7, 1997,  which is incorporated by reference
into Part III of this Form 10-K.
<PAGE>


                                  EXOGEN, INC.

                          1996 Form 10-K Annual Report

                                TABLE OF CONTENTS


                                      
                                     PART I

Item 1.    Business
Item 2.    Properties
Item 3.    Legal Proceedings
Item 4.    Submission of Matters to a Vote of Security Holders
Item 4a.   Executive Officers of the Registrant

                                     PART II

Item 5.    Market for Registrant's Common Equity and Related Stockholder Matters
Item 6.    Selected Financial Data
Item 7.    Management's Discussion and Analysis of Financial Condition
               and Results of Operations
Item 8.    Financial Statements and Supplementary Data
Item 9.    Changes in and Disagreements With Accountants on Accounting
               and Financial Disclosure

                                    PART III

Item 10.   Directors and Executive Officers of the Registrant
Item 11.   Executive Compensation
Item 12.   Security Ownership of Certain Beneficial Owners and Management
Item 13.   Certain Relationships and Related Transactions

                                     PART IV

Item 14.   Exhibits, Financial Statement Schedules, and Reports on Form 8-K 

<PAGE>
                                     PART I


Item 1.  Business

         Exogen,   Inc.   (the   "Company"  or  "Exogen")   designs,   develops,
manufactures,  and markets  medical  devices for the  non-invasive  treatment of
musculoskeletal  injury and disease.  The Company's  proprietary  ultrasound and
mechanical-stress  technologies  are based on the principle  that bone growth is
stimulated by mechanical force. The Company's Sonic Accelerated Fracture Healing
System ("SAFHS(R)") device utilizes mechanical force, produced by ultrasound, to
accelerate fracture healing for closed, cast-immobilized, fresh fractures of the
tibia and distal  radius  within its approved  indications.  The SAFHS device is
small and  portable,  and is used by the patient once daily for 20 minutes.  The
Company's  Pre-Market  Approval  ("PMA")  application for the SAFHS Model 2A was
approved by the U. S. Food and Drug Administration  ("FDA") in October 1994. The
SAFHS  Model  2A is the  only  medical  device  approved  by  the  FDA  for  the
acceleration of fresh-fracture  healing of the tibia and the distal radius.  The
Company  established a subsidiary  in Germany  during fiscal 1995 as part of its
strategy to  introduce  the SAFHS  device in Europe,  and  commenced  commercial
distribution of the device in certain European countries during fiscal 1996 (see
"Sales and Marketing").

Industry Overview

Background

         Bone, which forms the human skeleton,  undergoes constant change during
an individual's  lifetime through a dynamic process of cellular action.  Bone is
continually  remodeled  so  that  between  10%  and  20% of the  adult  skeleton
undergoes  resorption  (removal) and formation annually.  At the cellular level,
bone  consists  of   specialized   bone  cells   (osteoblasts,   osteocytes  and
osteoclasts) and minerals,  proteins, hormones, water, and other large molecules
such as  sugars.  Bone is formed by  osteoblasts,  which  line the  surface of a
bone's structure, and osteocytes, which are located within the bone's structure.
Osteoclasts  are cells that resorb bone through a  degradation  process.  Bone's
natural remodeling process,  which is balanced between resorption and formation,
can be affected by a number of factors.  For example,  smoking has been shown to
slow the process of bone  formation,  while exercise such as walking or running,
which  applies  mechanical  force  to the  body on  impact,  has  been  shown to
stimulate the process of bone formation.

         Bone  progresses  through  two  forms as it  develops:  woven  bone and
lamellar bone.  Woven bone is unorganized and premature,  and is found either in
growing bones or at fracture sites as newly formed bone. Lamellar bone is mature
bone that results from the further remodeling of woven bone. Two types of mature
bone comprise  substantially all of the human skeleton:  cortical bone (dense or
compact  bone),  which  constitutes  approximately  80%  of  the  skeleton,  and
cancellous  bone  (spongy  bone),  which  constitutes  approximately  20% of the
skeleton.  Cortical bone is  approximately  30% porous,  and consists of a dense
bundle of vascular  channels,  containing  blood  vessels,  surrounded by mature
bone.  Cancellous bone is approximately  70% porous,  highly  vascularized,  and
consists of a loosely formed matrix of beams designed to withstand the principal
stresses and strains  applied to the bone.  The density of cortical bone is four
<PAGE>
to six times higher than cancellous bone.  Cortical bone forms the middle 80% of
the long bones of the body, including the tibia and fibula in the lower leg, the
femur in the upper leg, the radius and ulna in the lower arm, and the humerus in
the upper arm.  Cancellous bone constitutes the remaining 20% of bone located at
the ends of the long bones. For example,  the distal radius, which is cancellous
bone, is the portion of the radius located closest to the wrist.  All cancellous
bone is surrounded by a cortical outer layer.

         When a fracture occurs in either cortical or cancellous bone, a complex
biological healing process is initiated. In cortical bone, there are five stages
of repair and remodeling that, if completed,  eventually restore the bone to its
original pre-fracture condition.  The first healing stage lasts approximately 48
hours,  and is an inflammatory  response in the tissue at the fracture site that
stimulates  the  formation  of stem (early  stage) cells  originating  from bone
marrow  and from  surface  tissue  at the  fracture  site.  As the  inflammation
subsides,  the dead  tissue at the bone ends is removed  and stem cells begin to
organize into a cellular matrix. In the second stage, which lasts several weeks,
stem cells proliferate in the bone marrow cavity and evolve into cartilage cells
and soft fracture callus (a matrix of fibrous tissue,  cartilage and woven bone)
in the outer and inner  surface of the bone.  During this  period,  dead bone is
continually  replaced with new cartilage  cells.  In the third stage of healing,
which  begins  approximately  six to eight  weeks  after  fracture,  there is an
increase in soft callus that fills the marrow cavity and forms along the outside
of the bone. In the fourth stage,  which  typically  begins 10 to 12 weeks after
fracture  and  extends  to 20 weeks  or  more,  the  fracture  callus  gradually
calcifies through osteoblastic action,  increasing the stability of the fracture
site. This calcified  callus begins to remodel toward the end of this stage, and
continues to convert into lamellar bone in the fifth stage.

         Fractures in cancellous bone heal in substantially  the same manner and
stages as cortical bone, except that cancellous bone does not have a bone marrow
cavity,  so bone healing occurs along the matrix of internal beams that comprise
its structure.  Cancellous bone heals in approximately  one-third less time than
cortical bone,  primarily  because  cancellous  bone is more  vascularized  than
cortical bone.

         The process of bone  healing in fresh  fractures  generally  takes from
four to  eight  months  for  cortical  bone and from  three  to six  months  for
cancellous bone. Many fractures take  substantially  longer to heal, and some do
not heal at all.  "Non-unions"  are  fractures  that have not healed within nine
months and have shown no sign of healing for the prior three months.  Physicians
may identify certain fractures, at the time of occurrence,  as being susceptible
to  extended  healing  times  and  associated  complications.  According  to the
orthopaedic literature,  some of the factors taken into account by physicians in
making such a determination  include  fracture  characteristics  such as the gap
size,  location,  displacement,  and fragmentation of the fracture,  and patient
characteristics such as the age, gender,  health condition,  weight, and smoking
habits of the patient.  Many of these  fractures could result in costly surgery,
rehabilitation therapy, and in some cases, permanent disability.

Fracture Market

         Over 6,000,000 fractures occur each year in the United States, of which
more than 800,000 are tibia and distal radius  fractures.  The Company  believes
that  approximately  350,000 of these  tibia and  distal  radius  fractures  are
candidates for treatment with the SAFHS device. Many of these fractures could be
<PAGE>
treated  surgically,  and in some instances,  multiple  surgical  procedures are
needed to achieve healing.  Each of these surgical  procedures may involve costs
of $7,500 or more, and can result in complications, such as infection and death.
In  addition,  these  fractures  expose the patient to the risks of  longer-term
complications,  such as severe muscular  atrophy,  joint disorders,  and loss of
function. Patients often require rehabilitative therapy for up to several months
following  surgery,  at an  approximate  cost of $1,000 to $4,000 per  fracture.
Indirect medical costs due to lost wages, lost productivity,  and immobility may
also be incurred during the healing period.

Methods of Treating Fractures

         Various  methods  exist for the treatment of bone  fractures.  The most
common therapy is to immobilize  the fracture with an external  cast,  generally
for 12 to 18 weeks for tibia fractures and five to eight weeks for distal radius
fractures.  Certain  fractures are treated  surgically  using one or more of the
following  methods to provide  stability and promote healing:  internal fixation
devices  such as  plates,  rods and  screws;  bone  grafts  using  human bone or
synthetic bone; and external  fixation  devices,  which are external frames with
metal pins placed through the skin into the bone.

         All of the  conventional  therapies for bone  fractures  supplement the
body's fracture  healing process by immobilizing  the injured bone, by providing
scaffolds  for healing such as bone grafts,  or by  initiating  healing when the
healing process has prematurely stopped. None, however, accelerates the fracture
healing process.  Different  approaches have been  investigated and developed to
augment or replace  conventional  therapies,  including  electrical  stimulation
devices and bone  growth  factors.  Electrical  stimulation  devices  were first
approved by the FDA and introduced  commercially  in 1979.  Although  electrical
stimulation   devices  demonstrate   efficacy  in  initiating   healing,   their
indications  for use have been  limited  to  non-union  fractures.  Bone  growth
factors are proteins that promote the healing  process and have been in clinical
trials for several years. However,  these clinical trials have also been limited
to non-union fractures.

         Clinical studies begun in the mid-1980s,  which supported the Company's
PMA application for its SAFHS device, demonstrated that mechanical force applied
to bone  induces the  formation  of bone and  accelerates  the  natural  healing
process in fresh fractures.  This work was based on a widely accepted scientific
principle  that bone  responds to mechanical  force by inducing  bone  formation
and/or   inhibiting  bone  loss.   These  clinical   studies   established  that
acceleration of fracture  healing is accomplished by using the mechanical  force
produced by low-intensity ultrasound waves.

         Ultrasound is mechanical  energy that can be transmitted  into the body
in pulses of acoustic  (sound)  pressure  waves at  frequencies  above the human
hearing  range.  Ultrasound is used for numerous  non-invasive  therapeutic  and
diagnostic purposes,  and millions of ultrasound procedures are performed in the
United States each year.  Therapeutic ultrasound systems transmit high levels of
acoustic energy to generate heat (thermal effect) into the tissue, and have been
found  to  be  a  relatively  safe  and  effective  non-invasive  treatment  for
soft-tissue   injuries  including  damaged  ligaments,   tendons,  and  muscles.
Therapeutic  ultrasound has not,  however,  been widely  investigated for use in
bone,  because of the potential  risk of inducing  excessive  heat into the bone
tissue.  Diagnostic ultrasound,  by contrast, uses low levels of acoustic energy
<PAGE>
(non-thermal)  as a safe,  non-invasive  method for viewing  internal organs and
fetuses. These low levels, however, were not previously thought to have biologic
therapeutic  effects.  The SAFHS clinical trials demonstrated that low-intensity
(similar  to  diagnostic  ultrasound),   non-thermal,   specifically  programmed
ultrasound  energy can safely  accelerate the healing of fresh fractures  within
the approved indications for the SAFHS device.

Osteoporosis Background and Market

         Numerous bone disorders  result from changes in the natural  remodeling
process  of bone  resorption  and  formation.  The most  widespread  of these is
osteoporosis,   a  disease   characterized  by  a  decrease  in  bone  mass  and
deterioration  of bone  structure.  This  deterioration  leads to an increase in
fracture risk due to bone fragility and reduced  strength of the  weight-bearing
skeleton,  particularly the spine and the hip. Loss of bone mass occurs when the
removal of bone by the osteoclasts exceeds the bone-formation  activities of the
osteoblasts and osteocytes.  As a person ages, the osteoclastic  action tends to
predominate and,  beginning at approximately age 40, bone mass begins to decline
at the rate of approximately  0.5% per year. Women lose a significantly  greater
percentage of bone mass  (between 10% and 20%)  following the onset of menopause
and the cessation of estrogen production.  Bone mass also deteriorates from lack
of physical activity such as extended bed rest.

         Over 25,000,000 people in the United States, primarily  post-menopausal
women and the elderly,  have osteoporosis.  In 1992, over 1,200,000 fractures in
the United States, or approximately  20% of the estimated total fractures,  were
osteoporosis-related.  Existing  drug  therapies,  such as  estrogen-replacement
therapy,  calcitonin,  and calcium  supplements,  have been useful in preventing
bone loss,  but none can form new bone. In addition,  use of existing  therapies
are limited by  complications  and certain side  effects  including an increased
incidence of endometrial,  ovarian, and breast cancers in women taking estrogen.
Strenuous exercise has been shown to reduce bone loss in the elderly but must be
performed with caution as exercise may itself cause fractures.  Several new drug
therapies are in clinical  trials for the treatment of  osteoporosis  to address
the limitations of current therapeutic  approaches.  In addition, the Company is
developing  a  mechanical-stress  device  for  the  treatment  of  osteoporosis,
although  this product is not  commercially  available to treat this disease and
there is no  assurance  that the  Company  will  ever  successfully  develop  or
commercialize such a device.

Business Strategy

         The  Company's  business  strategy  is to become a leading  provider of
devices for the non-invasive  treatment of  musculoskeletal  injury and disease.
The  Company   believes  a  significant   market   exists  for   cost-effective,
non-invasive  medical  devices  that  allow  the  patient  to  return  to normal
activities  as  rapidly as  possible.  The  following  are key  elements  of the
Company's strategy:

         Promote  Physician  Acceptance.  Exogen  is the  only  company  to have
obtained FDA approval to market a medical device for accelerating the healing of
fresh fractures of the tibia and distal radius.  The Company seeks to gain broad
physician acceptance of this new treatment modality through the dissemination of
scientific,  clinical,  and  patient-outcomes  data on the SAFHS treatment.  The
Company's  marketing  efforts are targeted to  orthopaedic  surgeons in academic
institutions and in community-based practices.
<PAGE>
         Establish   Reimbursement  by  Third-Party   Payors.  The  Company  has
implemented a comprehensive plan to obtain reimbursement for the SAFHS device as
a new  treatment  device from a broad  range of  third-party  payors,  including
managed  care  organizations,   workers'  compensation   insurers,   traditional
indemnity insurers, and Medicare. The Company uses the scientific, clinical, and
patient-outcomes  data on the safety and effectiveness of the SAFHS treatment to
establish third-party reimbursement.

         Broaden  Sales and  Marketing  Efforts.  The Company has  established a
nationwide network of independent and direct sales representatives in the United
States.  At September 30, 1996,  there were 32 people  employed in the Company's
direct sales  organization  and 28  independent  sales  agencies  throughout the
United States.  A primary focus of the Company's  marketing  efforts is national
and regional managed care organizations and insurance carriers, with coordinated
marketing  through  the  Company's  sales force and  reimbursement  specialists.
During  1996,  the  Company  commenced  marketing  the SAFHS  device in  several
European countries through its wholly owned German subsidiary using sales agents
and independent  distributors.  In addition, in December 1995 the Company signed
development  agreements with Teijin Limited, a Japanese  corporation,  to market
the SAFHS device in Japan, subject to Japanese regulatory approvals.

         Expand  Technology  Applications.  The Company is seeking to expand the
applications  of its SAFHS  treatment to other  fractures.  In 1995, the Company
initiated  pilot clinical  trials in Europe for internally  fixed  fractures and
leg-lengthening  procedures. In 1996, the Company commenced pre-clinical studies
in the United States for spine fusion and cartilage repair. The Company has also
developed a  mechanical-stress  device that may prevent and treat  osteoporosis,
and commenced a pilot  clinical  trial for this device during 1996 in the United
States.

         Establish   Manufacturing   Capability.   During   1996,   the  Company
established manufacturing capability at its facility in Piscataway,  New Jersey,
where the  Company is  currently  refurbishing  the SAFHS  Model 2A. The Company
believes  that  this  manufacturing   capability,   together  with  its  product
engineering capability, will advance its product design and development efforts,
provide better control over its costs, and reduce its dependence on its contract
manufacturer.

Products and Products Under Development

         Exogen's  products  are  focused  on  the  non-invasive   treatment  of
musculoskeletal  injury and disease,  and are based on the  principle  that bone
growth  is   stimulated   by  mechanical   force.   The  Company's   proprietary
mechanical-force  technologies,  including  ultrasound  and  mechanical  stress,
deliver energy that promotes the growth, repair, and maintenance of bone.

Sonic Accelerated Fracture Healing System ("SAFHS")

         SAFHS Model 2A. SAFHS is a non-invasive device that delivers ultrasound
energy  to  accelerate   fracture  healing  through   specifically   programmed,
low-intensity  acoustic  pressure waves.  The SAFHS Model 2A is comprised of two
electronic  components.  The main operating unit controls the treatment time and
monitors the proper attachment and operation of the ultrasound  transducer,  and
is  plugged  into a  standard  electrical  outlet.  The  second  component,  the
<PAGE>
ultrasound transducer,  delivers a specific,  low-intensity ultrasound signal to
the fracture site, and is powered by a limited-life battery designed to last for
120 treatments of 20 minutes each. To prevent electricity from traveling between
the  transducer  and the main  operating  unit,  the main operating unit and the
transducer  communicate  through  fiber  optics.  Once the SAFHS device has been
prescribed for a patient,  the physician cuts a window in the patient's cast and
installs a plastic coupling fixture in the window. The transducer is locked into
the fixture for treatment,  and a protective cap is inserted in the fixture when
the device is not being used.

         The SAFHS  treatment  was designed to maximize  ease of use.  Treatment
requires use of the device only once daily for 20 minutes.  The treatment period
averages  approximately  three  months for  treatment  of a tibia  fracture  and
approximately  six weeks for a distal  radius  fracture.  The device is portable
(weighing  approximately four pounds) and may be used by the patient at home, in
the  workplace,  or  elsewhere.  The patient coats the  transducer  head with an
ultrasound-conducting  coupling gel to facilitate transmission of the ultrasound
signal,  and locks the transducer into the coupling fixture set in the cast. The
SAFHS Model 2A produces  audible  tones to notify the patient that the treatment
has commenced or ended and alerts the patient in case of improper application or
performance  of the  device.  The  device  also  contains  a  patient-compliance
monitoring system that automatically records all treatment sessions and provides
a detailed  record,  including date and time, of the patient's use of the device
for  monitoring by the  physician  and the Company.  The list price of the SAFHS
Model 2A is $2,950, regardless of the length of treatment.

         The prescribing  physician is responsible for submitting to the Company
(i) the prescription for the SAFHS device,  (ii) a letter of medical  necessity,
and (iii) the required  paperwork for  submission of the claim to the applicable
third-party  payor.  The  device is shipped  by the  Company to the  physician's
office,  either  directly  or through the  Company's  sales  representatives.  A
Company  sales  representative  is  available  at  the  physician's  office,  if
necessary,  to assist the physician in instructing the patient in the use of the
SAFHS device. The documentation signed by the patient requires the return of the
device  at the end of the  treatment  period.  The  main  operating  unit may be
serviced and reused;  the transducer,  however,  is designed to be discarded and
ceases to operate  once the  battery  has been  expended.  Patients do not pay a
refundable  deposit for the device,  and consequently,  the Company expects that
not all SAFHS devices will be returned by patients.

         The Company provides the SAFHS device for the duration of the treatment
of the fracture,  regardless of the length of treatment. The Company maintains a
toll-free telephone number and provides 24-hour coverage to respond to inquiries
from either patients or physicians. If necessary, replacement units and supplies
are provided to the patient.

         SAFHS  2000(R).  The Company  has  designed a  second-generation  SAFHS
device,  the SAFHS 2000,  which is  entirely  battery  operated  and smaller and
lighter  than the  SAFHS  Model 2A for  enhanced  portability.  The  SAFHS  2000
utilizes the same  ultrasound  signal as the SAFHS Model 2A. The Company filed a
PMA  supplement  for the SAFHS 2000 in December  1995. No assurance can be given
that the PMA supplement will be granted by the FDA on a timely basis, or at all.
<PAGE>
Mechanical-Stress Device

         The  Company  has  developed  a  mechanical-stress  device  designed to
inhibit bone loss and increase bone mass. The device delivers  mechanical  force
to the bone similar to the SAFHS  technology.  The device induces  low-intensity
vibrational stress within the skeleton at frequencies similar to those generated
by the muscles of the human body. The device consists of a resonating  platform,
on  which  the  patient  stands,   that  delivers   mechanical   stress  to  the
weight-bearing skeleton.

         In preclinical  studies  conducted by the Company,  the device has been
shown to inhibit bone loss and enhance bone mass with treatments of less than 20
minutes per day. In a clinical  study  conducted  by the Company in Europe,  the
Company  has  demonstrated  that  approximately  90% of the  vibrational  stress
produced by this device reaches the hip and approximately 85% reaches the spine,
the regions of the  weight-bearing  skeleton most  susceptible  to bone loss and
resulting  fractures.  The Company commenced pilot clinical trials in the United
States for its  mechanical-stress  device in 1996,  and intends to submit to the
FDA an IDE to commence  pivotal  clinical trials  following  completion of these
pilot trials. No assurance can be given that the  mechanical-stress  device will
prove  to be  safe  and  efficacious,  that  product  development  will  ever be
successfully  completed,  that a PMA, if applied for, will be granted by the FDA
on a timely basis, or at all, that adequate levels of third-party  reimbursement
will be  available,  or that the  mechanical-stress  device  will  ever  achieve
commercial acceptance.

Results of SAFHS Clinical Trials

         The results of the SAFHS  clinical  trials,  which were acquired by the
Company from Interpore Orthopaedics, Inc. ("Interpore"), demonstrated the safety
and efficacy of the SAFHS treatment,  and the Company believes such results were
critical to  obtaining  approval for the SAFHS Model 2A from the FDA for certain
fracture  indications.  The PMA  application for the SAFHS Model 2A was filed in
July 1990 and  received  FDA  approval  in  October  1994.  The PMA  application
consisted  of  clinical  data on 182  fractures  in 179  patients at 21 clinical
sites. Of these  fractures,  97 were included in the tibia clinical trial and 85
were  included  in the distal  radius  trial.  The SAFHS  clinical  trials  were
prospective, randomized, double-blind, and placebo-controlled. All patients were
cast-immobilized,  and all received  treatment,  commencing within seven days of
fracture,  using  the SAFHS  device  or, in the case of the  placebo  group,  an
identical device with no ultrasound signal emission.

         The results of both  studies  showed that the average  time to a healed
fracture  (as  measured   clinically  and  by  x-ray)  was  accelerated  in  the
SAFHS-treated group as compared with the placebo-treated  group by approximately
38%. The SAFHS-treated tibia fractures healed in an average of 96 days, compared
with an average of 154 days in the placebo-treated  fractures. The SAFHS-treated
distal radius fractures  healed in 61 days on average,  compared with 98 days on
average for the placebo-treated  fractures. In addition, healing was accelerated
in all healing stages of the SAFHS-treated  fracture in both types of bone. When
the patients were categorized by age (30 years old or under and over 30 years in
the  tibia  study,  and 49 years  old or under  and over 49 years in the  distal
radius study), there was a significantly  greater acceleration of healing in the
older-patient  populations.  The older SAFHS-treated patients in the tibia study
healed in an  average of 102 days,  compared  with an average of 187 days in the
placebo-treated  patients,  and the older  SAFHS-treated  patients in the distal
radius  study healed in an average of 62 days,  compared  with an average of 102
days in the placebo-treated patients.
<PAGE>
         Typically the fracture site in distal radius fractures is significantly
crushed.  When the bone is restored to its normal length and anatomical position
to be set in a cast for healing,  there is often a gap in the crushed-bone area.
The presence of this gap makes it difficult to maintain this  restored  position
throughout  the healing  process,  even though the arm is immobilized in a cast.
During the healing  process,  the fractured  bone end  frequently  shifts out of
proper alignment, commonly resulting in physical deformity and compromised wrist
function. The loss of alignment in patients with the SAFHS-treated distal radius
fractures was on average  approximately  60% less than that  experienced  by the
placebo-treated fractures.

         The clinical  results  demonstrated  that the SAFHS  device  produced a
statistically  significant and clinically meaningful  acceleration of all stages
of  healing in fresh bone  fractures  of both the tibia  (which is an example of
cortical  bone) and the distal radius  (which is an example of cancellous  bone)
within the approved  indications for SAFHS. No contraindications or side effects
were identified in the clinical trials.

Sales and Marketing

         The  Company's  marketing  strategy  is to  gain  broad  physician  and
third-party  payor  acceptance of the SAFHS device worldwide within the approved
indications.  A critical  element of this  strategy is to utilize the results of
the SAFHS clinical  trials to  demonstrate  the safety and efficacy of the SAFHS
treatment to both physicians and  third-party  payors.  The Company's  marketing
efforts are currently focused on orthopaedic  surgeons in academic  institutions
and  in   community-based   practices.   Through  its  direct  sales  force  and
reimbursement  specialists,  the  Company is working  closely  with  orthopaedic
surgeons and other  physicians,  including primary care physicians who represent
third-party  payors.  Once a  prescription  is received  by the  Company  from a
physician, the SAFHS device is shipped by the Company to the physician's office,
either directly or through the Company's sales representatives.

United States.  The Company has  established a direct sales  organization  of 32
people as of September 30, 1996,  and has contracted  with 28 independent  sales
agencies in the United States. The Company's direct sales efforts are focused on
educating  physicians and third-party  payors in major metropolitan areas on the
benefits  of the SAFHS  technology  for its  approved  indications.  The Company
believes that these efforts will enable the Company's sales representatives to
better achieve nationwide market  penetration.  A primary focus of the Company's
marketing  efforts is national and regional  managed  care  organizations,  with
coordinated  marketing  through  the  Company's  sales  force and  reimbursement
specialists.  The Company's  Regional Business Directors manage the entire sales
organization as well as the field reimbursement efforts.

International. The Company established a wholly owned German subsidiary in 1995,
and in 1996  introduced  the SAFHS  device in Germany  and  Austria  through its
network of  independent  sales agents.  In other European  countries,  primarily
Holland,  France, the Scandinavian countries, the United Kingdom, and Italy, the
Company  plans to select and train  independent  distributors  and  agents.  The
Company is sponsoring  clinical  trials in Europe to augment  clinical data from
the  United  States,  with the goal of  achieving  acceptance  by  surgeons  and
governmental- and  private-insurance  payors in these markets. In December 1995,
the Company  announced  that it had signed  development  agreements  with Teijin
<PAGE>
Limited, a Japanese corporation.  The development  agreements are for two of the
Company's products, the SAFHS device and the mechanical-stress device. The SAFHS
agreement   provides  for  milestone   payments  to  the  Company  for  Teijin's
development  of the product for  commercial  launch in Japan.  The Company  will
manufacture  and  supply  SAFHS  devices  to  Teijin  for  clinical  trials  and
subsequent  sales in Japan.  Teijin will be  responsible  for complying with the
regulatory  requirements  and for marketing and distributing the SAFHS device in
Japan. The  mechanical-stress  agreement  provides for milestone payments to the
Company that will support,  in part, the Company's clinical trials in the United
States  in  exchange  for a first  option  in favor of  Teijin  to  negotiate  a
development and distribution  agreement for this device for the Japanese market.
No assurance can be given that the Company or its collaborators can successfully
introduce  the  SAFHS  device  in  Europe  or Japan on terms  acceptable  to the
Company,  or at all.  Future foreign  sales,  if any, will be subject to certain
risks, including exchange rate fluctuations,  international monetary conditions,
tariffs, import licenses, trade policies, domestic and foreign tax policies, and
foreign regulations.

Third-Party Reimbursement

         Prior  to  approving  coverage  for  a  new  medical  technology,  most
third-party  payors require  evidence that the technology is safe and effective,
not experimental or investigational, and medically necessary and appropriate for
the specific patient.  Third-party  payors typically require that the technology
has received FDA approval or clearance for marketing. New technologies are often
prescribed for off-label  applications,  for which  reimbursement by third-party
payors  may not be  available.  Increasing  numbers  of  third-party  payors and
managed care plans are beginning to require evidence that the technology is cost
effective.

         In the United States,  the Company has commenced a multi-level  program
to obtain  coverage  and  reimbursement  from  third-party  payors for the SAFHS
device as a new treatment modality. (The SAFHS device is typically classified by
third-party payors as Durable Medical  Equipment.)  Although the Company has not
received  broad  approval  from any  reimbursement  authority for payment of the
SAFHS  device,  it has received  approval from various  third-party  payors on a
case-by-case  basis.  As of October 31, 1996,  the Company has been paid by over
700 third-party  payors including  automobile  insurers,  workers'  compensation
insurers,  health  insurers  including  Blue Shield  organizations,  and several
managed care and third-party administrator  organizations.  The Company believes
that  case-by-case  approval  will  continue  to be the  predominant  method  of
obtaining  pre-authorization  and  reimbursement  for  the  SAFHS  device  until
national  or  regional  reimbursement  approvals  are  obtained.  The Company is
seeking to  establish  separate  reimbursement  codes for the SAFHS  device with
various  payors  in order to  expedite  reimbursement  processing  for the SAFHS
device;  however no assurance can be given that such codes will be assigned on a
timely basis, or at all.

         Currently,  the Health Care Financing  Administration  ("HCFA"),  which
administers the Medicare program,  has a national coverage policy for electrical
stimulation  devices  that  initiate the healing of  non-union  fractures.  Such
devices are  reimbursed  under a fee  schedule  in which the range of  allowable
reimbursement is $2,800 to $2,950 per treatment regimen.  In August 1996, HCFA's
Technology  Advisory Committee  recommended that the SAFHS device not be covered
under the Medicare  program.  The Company is continuing  to pursue  coverage for
SAFHS by providing additional information to the HCFA staff. No assurance can be
given that the Company can be  successful  in  obtaining  coverage for the SAFHS
device under the Medicare program.
<PAGE>
         During  1995,  the  Company  submitted  clinical   information  to  the
Technology  Evaluation  Center  ("TEC")  of  the  Blue  Cross  and  Blue  Shield
Association  ("BCBSA")  requesting that the TEC evaluate the SAFHS therapy.  The
TEC  program   distributes  the  results  of  its  evaluation  to  BCBSA  member
organizations and to third-party payors and others who purchase TEC assessments,
and such  evaluations are often used by payors in setting their own coverage and
reimbursement  policies.  In August 1995,  the TEC  completed  its review with a
favorable  assessment of the SAFHS therapy, and has disseminated this evaluation
to its subscribers.

         In addition to Medicare and Blue Cross and Blue Shield,  the  Company's
reimbursement  specialists are focused on obtaining  coverage and  reimbursement
from major  national  and  regional  managed care  organizations  and  insurance
carriers   throughout  the  United  States.   Most  of  the  third-party   payor
organizations  independently  evaluate new treatment modalities by reviewing the
published  literature and/or the Medicare  coverage and reimbursement  policy on
the  specific  treatment  modality.  To assist the  third-party  payors in their
respective  evaluations of the SAFHS device, the Company provides scientific and
clinical data that support the safety and effectiveness of the device.

         When a  prescribing  physician  submits  a  prescription  for the SAFHS
device to the  Company,  he or she must also  submit to the  Company a letter of
medical necessity and the required  paperwork for submission of the claim to the
applicable  third-party  payor.  The Company ships the device to the  physician,
either directly or through the Company's sales  representatives,  generally only
after  obtaining  prior  reimbursement   approval  from  the  payor,  when  such
precertification is available. The Company charges a flat fee for the use of the
SAFHS device, regardless of the length of treatment. The Company's reimbursement
personnel work closely with third-party payors on a case-by-case basis.

         The Company's  international  reimbursement plan varies by country. The
Company uses clinical and  reimbursement  data from the United States to augment
its international  reimbursement efforts. Some countries may have more stringent
reimbursement  requirements  than the United States.  The Company  currently has
limited  experience  in  obtaining  reimbursement  for its products in countries
other than the United States.

         There can be no assurance that reimbursement for the Company's products
will be  available,  or that  future  reimbursement  policies of payors will not
adversely  affect the  Company's  ability to sell its  products on a  profitable
basis,  or at all. The United States Congress is currently  considering  various
proposals  to  significantly  reduce  Medicare and  Medicaid  expenditures.  The
Company cannot predict which,  if any, of these proposals will be enacted and if
enacted,  what effect, if any, they may have on the Company's business.  Failure
by the  Company  to  obtain  favorable  coverage  determinations  or  sufficient
reimbursement from Medicare or from other third-party payors, or adverse changes
in governmental and private  third-party  payors' policies toward  reimbursement
for  the  Company's  products,  would  have a  material  adverse  effect  on the
Company's business, financial condition, results of operations, and cash flows.

Manufacturing

         The  Company's  SAFHS  device is currently  manufactured  by a contract
manufacturer. The agreement between the Company and the contract manufacturer is
documented by specific purchase orders,  effective to 1998, covering anticipated
requirements.   This  contract   manufacturer   also  performs   certain  design
<PAGE>
engineering for the Company.  The FDA conducted a Good  Manufacturing  Practices
("GMP")  inspection  of  this  contract  manufacturer's  facility  prior  to PMA
approval, and found it to be in compliance with GMP requirements.  In connection
with the PMA  Supplement  for the SAFHS 2000, the FDA inspected and approved the
contract manufacturer's  facilities to manufacture the Company's SAFHS 2000. Any
failure by the contract  manufacturer to maintain its manufacturing  facility in
accordance with GMP requirements  could result in the inability of such contract
manufacturer  to  manufacture  the SAFHS  device,  and may  limit the  Company's
ability to deliver the SAFHS device to physicians and patients, which would have
a  material  adverse  effect on the  Company's  business,  financial  condition,
results of operations, and cash flows.

         To improve control and flexibility in product design, supply, and cost,
the Company has developed in-house manufacturing  capability.  The Company began
refurbishing  the SAFHS  Model 2A at its  Piscataway,  New  Jersey  facility  in
November 1995. In January 1996, the Company's facility successfully  completed a
GMP  inspection  by the FDA.  In August  1996,  the  Company  received  ISO 9003
(International  Organization  of  Standardization)  Certification  and  CE  Mark
Certification  for the  Company's  SAFHS  Model 2A. The CE Mark  signifies  that
Exogen conforms with the European  Community Medical Device Directive.  Prior to
commencing  in-house  manufacture  of the SAFHS  2000 for  commercial  use,  the
Company's  facilities  will require FDA  determination  of  compliance  with GMP
requirements  associated with the PMA Supplement for the SAFHS 2000. The Company
believes that its Piscataway  facility will have sufficient capacity to meet the
Company's  anticipated  manufacturing  needs for at least the next three  years.
There  can be no  assurance  that  the  Company  will be able to  establish  its
manufacturing  capability for the SAFHS 2000,  obtain GMP approval,  or make the
transition to commercial manufacturing  successfully or manufacture its products
cost effectively, or at all.

         The manufacture of the SAFHS device involves an assembly process with a
number of  significant  components.  Each  device is tested and  released by the
Company  in  accordance  with  FDA   requirements.   After  commencing  its  own
manufacturing  operations,  Exogen plans to fabricate certain components,  while
other  components  will  continue  to  be  purchased  from  various  independent
suppliers.  Most  purchased  components are available from more than one vendor.
However,  certain components  currently are and will continue to be manufactured
by single-source vendors. For certain of these components,  there are relatively
few alternative  sources of supply,  and establishing  additional or replacement
suppliers  for such  components  cannot be  accomplished  quickly.  Although the
Company is  continually in the process of  identifying  primary and  alternative
vendors,  the  qualification  of additional or  replacement  vendors for certain
components  or  services  is a lengthy  process.  Any supply  interruption  from
single-source  vendors  would have a material  adverse  effect on the  Company's
business, financial condition, results of operations, and cash flows.

Research and Development

         The Company's principal research and development program relates to the
development  and  clinical  trials of the  Company's  mechanical-stress  device.
Additionally,  the Company has ongoing programs to develop new devices utilizing
its  SAFHS  technology  and to expand  SAFHS  applications  to other  fractures,
lower-back spine fusion,  and cartilage  repair.  No assurance can be given that
the SAFHS treatment will prove to be safe and  efficacious for other  fractures,
spine  fusion,  or  cartilage  repair or that any PMA, if applied  for,  will be
granted by the FDA on a timely basis, or at all.
<PAGE>
         The  Company  is  evaluating  the use of  ultrasound  in a  variety  of
orthopaedic  applications.  The Company is providing  SAFHS devices to physician
investigators  for  preliminary  clinical  studies in the use of ultrasound  for
healing stress  fractures,  limb lengthening  using an external fixation device,
and healing  internally fixed fractures.  The Company is supporting  preclinical
studies on bony  ingrowth  into porous  prostheses,  the treatment of lower-back
spine fusion,  and cartilage repair. The Company also sponsors research relating
to the basic science of ultrasound  for both  therapeutic  as well as diagnostic
use.

         As of November 30,  1996,  the Company had eight  employees  engaged in
research and  development  and  regulatory  affairs and 11 employees  engaged in
engineering.  The Company's  expenditures  for research and  development  (which
includes   clinical  trials,   regulatory   affairs,   and   engineering)   were
approximately $4.0 million, $2.5 million, and $1.4 million in fiscal 1996, 1995,
and 1994, respectively.

Patents, Copyrights and Proprietary Information

         The Company's  policy is to protect its proprietary  position by, among
other  things,  filing both United  States and foreign  patent  applications  to
protect its owned and licensed technology, inventions, and improvements that are
important to the  development  of its  business.  The Company holds title to six
issued United States patents,  one issued foreign  (Canadian) patent, 10 pending
United States patent  applications,  and corresponding Patent Cooperation Treaty
("PCT") and foreign patent  applications  relating to its SAFHS technology.  The
original  United States  ultrasound  patent (the  "Initial  Patent") that is the
basis of the SAFHS  device  was set to expire  in 2002,  but has been  granted a
five-year  extension  to 2007 based on the  delays in  marketing  the  invention
caused by extensive  regulatory review. The other currently issued United States
patents relating to SAFHS technology are set to expire between 2008 and 2014.

         The Company is also the exclusive licensee of four issued United States
patents,  two issued foreign patents,  and four pending foreign patents relating
to the use and application of mechanical-stress technology. The currently issued
United States patents relating to mechanical-stress technology are currently set
to expire  between  2010 and 2011.  All of the patents  and patent  applications
relating  to  mechanical-stress  technology  that the  Company  does not own are
licensed  exclusively  to the  Company  worldwide  until  the  later  of (i) the
expiration of the final patent  licensed to the Company or (ii) March 2022.  The
license agreement generally provides for the payment of royalties on the sale of
products utilizing the patented technology,  and the Company's exclusive license
may  revert to a  nonexclusive  license if the  Company  fails to use good faith
efforts to commercially exploit the patented technology.

         The  Company  intends  to file  or  cause  to be  filed  on its  behalf
additional  United  States,   foreign,  and  international  patent  applications
relating to new  developments  or  improvements  in SAFHS and  mechanical-stress
technology and to specific products it develops. While no assurance can be given
that the patent applications owned by the Company will issue as patents, or that
they will provide the Company with significant  protection  against  competitive
products or otherwise be  commercially  valuable,  the Company is unaware of any
facts that could  preclude the grant of a patent from each of the pending patent
applications.  There can be no assurance  that any issued  patents  owned by the
Company will provide  competitive  advantages for the Company's products or will
not be challenged or designed around by its competitors.
<PAGE>
         The Company  believes  it owns or has the right to use all  proprietary
technology necessary to manufacture and market its products.  Under current law,
patent applications in the United States are maintained in secrecy until patents
issue,  and patent  applications in foreign  countries are maintained in secrecy
for a period after filing.  The right to a device patent in the United States is
attributable to the first to invent the device,  rather than the first to file a
patent  application,  while in  foreign  countries,  ownership  of a  patent  is
typically determined by priority of patent filing, not invention.  Consequently,
the Company cannot be certain that it was the first to invent certain technology
covered by pending patent  applications  or that it was the first to file patent
applications for such inventions.  In addition,  the patent positions of medical
device companies, including the Company, are generally uncertain, partly because
the positions involve complex legal and factual questions.  Moreover, patent law
relating to certain of the Company's fields of interest,  particularly as to the
scope of claims in issued patents,  is still  developing,  and it is unclear how
this uncertainty will affect the Company's patent rights.

         The Company has not received any notices alleging, and is not aware of,
any infringement by the Company of any other entity's patents.  However, because
of the  volume of  patents  issued and patent  applications  filed  relating  to
medical  devices,   there  can  be  no  assurance  that  current  and  potential
competitors  and other  third  parties  have not filed or in the future will not
file  applications  for, or have not received or in the future will not receive,
patents and will obtain additional  proprietary  rights relating to materials or
processes used or proposed to be used by the Company. Accordingly,  there can be
no  assurance  that the  Company's  products  do not  infringe  any  patents  or
proprietary rights of third parties.

         The Company also relies upon trade  secrets,  technical  know-how,  and
continuing  technological  innovation  to develop and maintain  its  competitive
position.  The  Company  typically  requires  its  employees,  consultants,  and
advisors to execute  appropriate  confidentiality  agreements in connection with
their employment,  consultation, or advisory relationships with the Company. The
Company also typically requires its employees, consultants, and certain advisors
to agree to disclose  and assign to the Company all  inventions  conceived of on
Company time, using Company  property or that relate to the Company's  business.
There  can  be  no  assurance,  however,  that  the  foregoing  agreements  will
effectively  prevent  disclosure of the Company's  confidential  information  or
provide  meaningful  protection  for the Company's  confidential  information if
there is unauthorized use or disclosure.  Furthermore, no assurance can be given
that  competitors  will  not  independently  develop  substantially   equivalent
proprietary information and techniques or otherwise gain access to the Company's
proprietary technology,  or that the Company can meaningfully protect its rights
in unpatented proprietary technology.

         The Company  also holds  rights to  copyrights  on text and on software
developed by or for itself for use in its SAFHS device.  The Company  intends to
file copyright  registrations for such software.  There can be no assurance that
any copyrights owned by the Company will provide competitive  advantages for the
Company's products or will not be challenged or circumvented by its competitors.

         The  Company's  owned  and  licensed  patents  and  copyrights  and its
products may, in the future, be subject to litigation regarding patent and other
intellectual  property  rights.  In  the  event  that  any  relevant  claims  of
third-party  patents are upheld as valid and  enforceable,  the Company could be
prevented from  practicing the subject matter claimed in such patents,  or would
<PAGE>
be required to obtain licenses from the patent owners of each of such patents or
to redesign its products or  processes  to avoid  infringement.  There can be no
assurance  that such licenses  would be available or, if available,  would be on
terms  acceptable  to the Company or that the Company would be successful in any
attempt to  redesign  its  products  or  processes  to avoid  infringement.  The
Company's  failure to obtain these  licenses or to redesign  its products  would
have a material adverse effect on the Company's business,  financial  condition,
results of operations, and cash flows. In addition,  litigation may be necessary
to defend  against  claims of  infringement,  to enforce  patents and copyrights
issued or  licensed  to the  Company,  or to protect  trade  secrets,  and could
require significant  diversion of management's  attention and the expenditure of
financial resources, which could have a material adverse effect on the Company.

Government Regulation

         The Company's  existing  products are regulated in the United States as
medical devices by the FDA under the Federal Food,  Drug, and Cosmetic Act ("FDC
Act") and require the  approval of a PMA by the FDA prior to  commercialization.
Noncompliance  with  applicable  requirements  can  result  in  failure  of  the
government  to grant  pre-market  approval for devices,  withdrawal  of the PMA,
total or partial suspension of production, fines, injunctions,  civil penalties,
recall or seizure of products, and criminal prosecution.

         In the United States, medical devices are classified into three classes
(I, II, or III) on the basis of the  controls  necessary  to  reasonably  assure
their safety and  effectiveness.  The Company's existing products are classified
as Class III devices,  the class  subject to the highest  level of regulation by
the  FDA.  In  addition  to the  general  control  requirements  of the  FDC Act
(including registration,  labeling,  pre-market  notification,  and adherence to
GMP), the Company's products are also subject to pre-market approval.

         Before a new Class III device can be  introduced  into the market,  the
manufacturer  must  obtain FDA  clearance  through a PMA  application.  The less
burdensome  510(k)  pre-market  notification  process  has not been,  and is not
expected to be, available for any of the Company's  products.  Accordingly,  the
Company has had to obtain,  and expects to apply for,  PMAs and PMA  supplements
for its future products.

         A PMA  application  must be  supported  by  extensive  data,  including
preclinical  and clinical trial data, to demonstrate  the safety and efficacy of
the device for the indicated  uses  specified in the PMA  application.  If human
clinical  trials of a device are required and the device presents a "significant
risk," the  manufacturer  or the  distributor of the device must file an IDE and
have an approved application prior to commencing human clinical trials.

         The IDE application must be supported by data,  typically including the
results of animal and laboratory  testing.  If the IDE  application is approved,
human clinical  trials may begin at a specific number of  investigational  sites
with a specified maximum number of patients, as approved by the FDA. Sponsors of
clinical trials are permitted to sell those devices distributed in the course of
study  as  long as  compensation  does  not  exceed  recovery  of the  costs  of
manufacturing, researching, developing, and handling.
<PAGE>
         Upon  receipt  of the  PMA  application,  the  FDA  makes  a  threshold
determination as to whether the application is sufficiently complete to permit a
substantive   review.  If  the  FDA  determines  that  the  PMA  application  is
sufficiently  complete to permit a substantive  review,  the FDA will "file" the
application.  An FDA review of a PMA application  generally takes between two to
three  years  from  the  date  the  PMA  application  is  filed,  but  may  take
significantly  longer.  The  review  time is  often  significantly  extended  by
requests  from the FDA for more  information  or  clarification  of  information
already  provided  in the  submission.  During the review  period,  an  advisory
committee,  including clinicians, will likely be convened to review and evaluate
the application and provide  recommendations to the FDA as to whether the device
should be approved. In addition, the FDA will inspect the manufacturing facility
to ensure compliance with the FDA's GMP requirements  prior to approval of a PMA
application.

         The PMA process can be expensive,  lengthy, and uncertain. There can be
no  assurance  that the  Company  will be able to  obtain  necessary  regulatory
approvals.  The loss of previously received approvals, or failure to comply with
existing or future regulatory requirements, would have a material adverse effect
on the Company's business,  financial condition, results of operations, and cash
flows.

         The PMA  application  for use of the  SAFHS  Model 2A to treat  certain
fresh  fractures of the tibia and distal radius was filed in July 1990,  and the
FDA's  approval  for  commercial  marketing by the Company was issued in October
1994. The promotion by the Company of the SAFHS Model 2A to treat  fractures not
covered by the initial PMA will require the submission of PMA supplements or new
PMA applications.  PMA supplements often require  submission of the same type of
information  as in a PMA  application,  except that the supplement is limited to
information  intended  to support any  changes  from the product  covered by the
original PMA and to support the treatment of new clinical  indications,  and may
not require the submission of as extensive clinical data or the convening of any
advisory committees.  In addition,  PMA supplements must be submitted to the FDA
before  making any change  that may  affect the safety or  effectiveness  of the
device.  These  changes  can  include  changes  in device  design,  composition,
specifications,  circuitry,  software,  or energy  source.  The Company has made
certain  nonperformance-related  changes to the SAFHS  Model 2A since the device
was  approved by the FDA.  Although  the Company  believes  such  changes do not
require the filing of a PMA  supplement and prior approval by the FDA, there can
be no  assurance  that  the FDA  will  not  require  the  Company  to file a PMA
supplement,  which would result in additional  costs and delays in marketing the
device.  A PMA  supplement  must also be submitted  when  unanticipated  adverse
effects,  increases in the incidence of anticipated  adverse effects,  or device
failures necessitate a label, manufacture,  or device modification.  The Company
filed a PMA  supplement  for its SAFHS 2000 in December  1995.  The Company will
also be required to file a PMA application for its mechanical-stress  device, if
and  when  development  is  completed.  No  assurance  can  be  given  that  any
supplements  will be filed or  approved,  or that new PMAs will be  granted on a
timely basis,  or at all. Delays in receipt or failure to receive such approvals
would  have a  material  adverse  effect on the  Company's  business,  financial
condition, results of operations, and cash flows.

         Any products  manufactured or distributed by the Company pursuant to an
approved  PMA are subject to  pervasive  and  continuous  regulation  by the FDA
including record-keeping requirements,  reporting of adverse experience with the
use of the device,  post-market  surveillance,  post-market registry,  and other
actions  as  deemed  necessary  by  the  FDA.  Product  labeling  and  promoting
activities are subject to scrutiny by the FDA and, in certain instances,  by the
<PAGE>
Federal Trade Commission. Products may be promoted by the Company and any of its
distributors  only  for the  products'  approved  indications.  There  can be no
assurance that the Company will not become subject to FDA actions as a result of
physicians'  prescribing  the SAFHS device for off-label  uses.  The Company has
been  notified by the FDA that its labeling of the SAFHS device must be modified
to  reflect  the  types of  fractures  treated  in the  SAFHS  clinical  trials,
consistent with the Company's physician  instruction manual.  Consequently,  all
documents  pertaining to the SAFHS device now include the  following  statement:
"All  fractures in both clinical  studies were treated with SAFHS therapy within
seven  days  of  fracture."  No  assurance  can be  given  that  this  or  other
modifications  to the  labeling  in the  future  will not  adversely  affect the
Company's ability to market, sell, or be reimbursed for the SAFHS device.

         Product   approvals  may  be  withdrawn  for  failure  to  comply  with
regulatory  standards or the occurrence of unforeseen problems following initial
marketing.  The FDC Act  requires  the  Company's  products be  manufactured  in
registered establishments and in accordance with GMP regulations.  The Company's
SAFHS device is currently manufactured by a contract manufacturer.  The contract
manufacturer's  facility has been inspected by the FDA and is currently the only
facility  approved for the  production of the SAFHS  device.  Any failure by the
contract manufacturer to maintain its manufacturing  facility in accordance with
FDA GMP requirements could result in the inability of such contract manufacturer
to manufacture  the SAFHS device and may limit the Company's  ability to deliver
the SAFHS device to physicians and patients, which would have a material adverse
effect on the Company's business,  financial  condition,  results of operations,
and cash flows.

         The Company also is subject to numerous federal,  state, and local laws
relating to such matters as safe working  conditions,  manufacturing  practices,
environmental  protection,  fire hazard  control,  and  disposal of hazardous or
potentially  hazardous  substances.  There can be no assurance  that the Company
will not be  required  to incur  significant  costs to comply with such laws and
regulations  in the  future,  or that such laws or  regulations  will not have a
material  adverse  effect  upon the  Company's  business,  financial  condition,
results of operations, and cash flows.

         Sales of  medical  devices  outside  the United  States are  subject to
foreign  regulatory  requirements that vary widely from country to country.  The
time required to obtain  approval by a foreign  country may be longer or shorter
than that required for FDA approval,  and the  requirements  may differ.  Export
sales of investigational  devices that have not received FDA marketing clearance
generally  are  subject  to FDA export  permit  requirements.  To obtain  such a
permit,  the Company  must provide the FDA with  documentation  from the medical
device  regulatory  authority of the country in which the  purchaser is located,
stating that the sale of the device is not a violation of that country's medical
device  laws,  and must  demonstrate  to the FDA that export is not  contrary to
public health. No assurance can be given that such foreign regulatory  approvals
will be granted on a timely basis, or at all.

         During  1996,  the Company  received  regulatory  approval of the SAFHS
Model 2A in Germany.  Under  German law,  medical  devices must have a "GS" mark
affixed to the product  labeling.  The GS mark,  which the  Company  received in
December 1995, denotes that the product meets certain safety standards. In 1996,
the Company also received the "CE" (Medical Device Directive) mark for the SAFHS
Model  2A.  The CE mark is  recognized  by  countries  that are  members  of the
<PAGE>
European Union and the European Free Trade Association, and effective June 1998,
will be  required  to be affixed to all  medical  devices  sold in the  European
Union.  No  assurance  can be given that any  products  that the  Company  might
develop or commercialize  will obtain the CE mark, or will be able to obtain any
other required regulatory clearance or approval on a timely basis, or at all.
 
Competition

         The medical device industry is  characterized  by intense  competition.
Many of the Company's  existing and  potential  competitors  have  substantially
greater financial,  marketing, sales, distribution, and technical resources than
the Company and more experience in research and  development,  clinical  trials,
regulatory matters,  manufacturing,  and marketing.  In addition,  most of these
companies  have  established  third-party   reimbursement  for  their  products.
Furthermore,  the medical  device  industry is  characterized  by rapid  product
development and technological  change.  The Company's products could be rendered
obsolete  or  uneconomical  by  technological  advances  by one or  more  of the
Company's  competitors or by other  therapies such as drugs to treat  conditions
addressed  by  the  Company's  products.   The  Company's  business,   financial
condition, results of operations, and cash flows will depend upon its ability to
remain competitive with other developers of such medical devices and therapies.

         The SAFHS device  competes  with  non-invasive  bone growth  electrical
stimulation  devices  and  with  various  surgical  treatments.   The  Company's
mechanical-stress  device to  prevent  bone loss  related  to  osteoporosis,  if
developed and marketed,  will compete with drug therapies and exercise regimens.
Four companies currently market electrical stimulation devices for the treatment
of non-union fractures.  The Company believes at least one of these companies is
conducting  clinical  trials  for  the  use of  electrical  stimulation  for the
treatment of fresh  fractures.  In addition,  other  companies are  developing a
variety of products and  technologies  to be used in the  treatment of fractures
and  osteoporosis,   including  growth  factors,  bone  graft  substitutes,  and
exercise/physical therapy equipment.  There can be no assurance that competitors
will not develop products that are superior to the Company's  products,  achieve
greater  market  acceptance,  or render the  Company's  technology  and products
obsolete or noncompetitive.  As a result, the Company's  long-term viability may
depend on  whether it can  continue  to develop  new  products.  There can be no
assurance that the Company will be able to compete  successfully against current
or future  competitors  or that  competition  will not have a  material  adverse
effect on the Company's business, financial condition, results of operations, or
cash flows.

Product Liability and Insurance

         The  Company  faces an  inherent  business  risk of exposure to product
liability  claims in the event  that the use of its  product  is alleged to have
resulted in adverse effects.  The Company maintains product liability  insurance
with coverage of $3.0 million per occurrence and an annual aggregate  maximum of
$3.0 million. In addition,  the Company maintains umbrella liability  insurance,
including  product  liability  coverage,  of $5.0 million per  occurrence and an
annual  aggregate  maximum  of $5.0  million.  There  can be no  assurance  that
liability  claims will not exceed the coverage  limits of such  policies or that
such insurance will continue to be available on commercially  acceptable  terms,
or at all. Consequently,  product liability claims could have a material adverse
effect on the Company's business,  financial  condition,  results of operations,
and cash flows.
<PAGE>
Employees

         As of November 30, 1996, the Company had 102  employees,  consisting of
37 in sales and marketing, 11 in engineering,  20 in finance and administration,
seven in quality assurance,  10 in reimbursement and customer service,  eight in
research and development and regulatory  affairs,  and nine in manufacturing and
shipping.  The Company  believes  that the success of its business  depends,  in
part,  on its ability to attract  and retain  qualified  personnel.  None of the
Company's  employees is covered by a  collective  bargaining  agreement.  Exogen
believes that it maintains good relations with its employees.


Item 2.  Properties

         The Company  leases an  approximately  36,000  square foot  facility in
Piscataway,  New Jersey. This facility contains approximately 12,000 square feet
of  manufacturing   space  and  24,000  square  feet  devoted  to  research  and
development,  marketing,  and  administration.  This facility is leased  through
October 2001, and the Company has an option for a five-year renewal term. Exogen
believes  this  facility  is  adequate  to  meet  its  anticipated  real  estate
requirements for the next three years.


Item 3.  Legal  Proceedings

         On April 4, 1995, a former  consultant to  Interpore,  the company from
which  Exogen  purchased  certain  SAFHS  ultrasound  assets,  filed a complaint
against  Interpore  and  Exogen  in the  United  States  District  Court for the
Southern  District of New York,  claiming the right,  pursuant to the terms of a
consulting  agreement  between such  consultant and the  predecessor  company to
Interpore,  to  certain  royalties,  not  exceeding  1.25%  of the net  revenues
generated from the sale of SAFHS devices.  On June 5, 1995,  Exogen answered the
complaint,  denied that it has any liability to the  consultant,  and asserted a
number of specific  defenses.  On the same day, Interpore did the same, and also
asserted  cross-claims  against Exogen,  claiming that any royalties found to be
due to the consultant  should be paid by Exogen and that Exogen should be liable
for Interpore's  attorneys' fees and other costs incurred in the litigation.  On
July 7, 1995, Exogen answered Interpore's  cross-claims,  denied that it has any
liability  to the  consultant  or to  Interpore,  asserted a number of  specific
defenses to Interpore's claims, and asserted cross-claims against Interpore that
any royalties found to be due to the consultant  should be paid by Interpore and
that Interpore be liable for Exogen's  attorneys'  fees and other costs incurred
in the litigation.  All parties are currently engaged in the discovery  process.
The Company  does not  believe  that the claims  against it have  merit,  and is
vigorously defending this action. There can be no assurance,  however,  that the
consultant's claims will not be upheld.

         On March 15, 1995, a former sales representative of the Company filed a
complaint  against  the  Company in the  United  States  District  Court for the
District of New Jersey that alleged breach of the sales representative agreement
and  sought  damages  as a result of the  termination  of the  agreement  by the
Company.  In March  1996,  the Company  settled  this  matter,  and the case was
dismissed with prejudice and without costs.
<PAGE>
Item 4.  Submission of Matters to a Vote of Security Holders

         None.


Item 4a.  Executive Officers of the Registrant

         The executive officers of the Company are as follows:

<TABLE>
<CAPTION>

                       Name                           Age                       Position
                       ----                           ---                       --------
<S>                                                    <C>   <C>
John P. Ryaby.......................................   62    Chairman of the Board of Directors and Vice President of
                                                             Research and Development and Regulatory Affairs
Patrick A. McBrayer.................................   45    Chief Executive Officer, President, and Director
John Bohan..........................................   48    Vice President of Sales and Marketing
Richard H. Reisner..................................   53    Vice President, Chief Financial Officer, and Secretary
Roger J. Talish.....................................   54    Vice President of Operations
- ---------
</TABLE>

         John P.  Ryaby,  a founder of the  Company,  has been a Director of the
Company since March 1992 and Chairman of the Board of Directors  since  February
1994. Mr. Ryaby served as President and Chief  Executive  Officer of the Company
from March 1992 until his  resignation  from such offices in February  1994, and
currently  serves  as  the  Vice  President  of  Research  and  Development  and
Regulatory Affairs.  Mr. Ryaby served from late 1989 until 1992 as the President
and Chief Operating Officer of Interpore, a division of Interpore International,
Inc., a physical and biological research company.  Mr. Ryaby was a founder,  and
from 1975 to 1982 was President and Chief Operating Officer, of Electro-Biology,
Inc.   ("EBI"),   a  company  involved  in  bone-growth   electrical-stimulation
technology,  and was responsible for obtaining  regulatory approval of EBI's PMA
in 1979 and for establishing EBI's direct sales force.

         Patrick A. McBrayer was named Chief Executive Officer, President, and a
Director of the  Company in February  1994.  Prior to joining the  Company,  Mr.
McBrayer  served in various  executive  positions  from 1987 to February 1994 at
Osteotech,  Inc.,  including  President and Chief  Executive  Officer.  While at
Osteotech, Inc., a company that develops and markets biologic,  biomaterial, and
implant systems for musculoskeletal  surgery,  Mr. McBrayer guided the company's
transition  from its  inception to a public  entity.  From 1979 through 1986, he
served in a variety of positions  of  increasing  responsibility  with Johnson &
Johnson,  Inc., including Marketing Manager of the Patient Care Division,  where
he built a significant business in surgical products.

         John Bohan  joined the Company in February  1994 as Vice  President  of
Sales and  Marketing.  Prior to joining  the  Company,  Mr.  Bohan held  various
positions from 1972 to 1994 at Johnson & Johnson, Inc., including Vice President
of Marketing  and Sales for Johnson & Johnson  Medical,  Inc.,  and for Ethicon,
Inc. Most recently,  he served as Vice President of Sales and Marketing and as a
member of the  Board of  Directors  of  Johnson  &  Johnson  Advanced  Materials
Company.
<PAGE>
         Richard H.  Reisner,  a founder of the Company,  has served as its Vice
President and Chief  Financial  Officer since September 1992. From 1991 to 1992,
Mr. Reisner was Vice President and Chief Financial Officer of Cirrus Diagnostics
Inc.  ("Cirrus"),  a company  that  developed  a system  for the  automation  of
diagnostic immunoassay and chemistry testing, and was directly involved with the
acquisition of Cirrus by Diagnostic Products  Corporation in May 1992. From 1990
to 1991,  Mr.  Reisner was the  Corporate  Controller  for  Datascope  Corp.,  a
manufacturer  of  medical  instruments.  From  1988 to  1990,  Mr.  Reisner  was
President  and  Chief  Executive  Officer  of Pain  Suppression  Labs,  Inc.,  a
manufacturer  of electrical  stimulation  devices to suppress  chronic  headache
pain.  From  1979 to  1988,  Mr.  Reisner  was Vice  President  of  Finance  and
Administration  of  EBI,  and  was  responsible  for  establishing   third-party
reimbursement for EBI's bone-growth electrical-stimulation devices.

         Roger J. Talish, a founder of the Company, has served as Vice President
of Operations  for the Company since March 1992.  From 1989 to 1992,  Mr. Talish
was Vice  President of Operations  at Interpore,  and from 1985 to 1989 held the
same  position at  Meditron,  Inc.  From 1978 to 1985,  Mr.  Talish held various
engineering  management  positions  at EBI,  including  Director of Research and
Product Engineering.
<PAGE>
                                     PART II


Item 5.  Market for Registrant's Common Equity and Related Stockholder Matters

         The  Company's  Common  Stock has been  quoted on the  Nasdaq  National
Market  under the  trading  symbol  "EXGN"  since the Company  commenced  public
trading on July 20, 1995. Prior to that date, there was no public market for the
Company's Common Stock.

         The  following  table sets forth the high and low selling price for the
Company's  Common Stock for the fiscal quarter ended  September 30, 1995 and the
four  quarters  of fiscal  1996,  based on  transaction  data as reported by the
Nasdaq National Market.
<TABLE>
<CAPTION>

                Fiscal years ended
            September 30, 1995 and 1996           High             Low
            ---------------------------           ----             ---
            <S>                                  <C>               <C>
            1995

            Fourth quarter
                (commencing July 20, 1995)..     $16.00            $11.00

            1996

            First quarter...................     $20.75            $12.75
            Second quarter..................     $25.75            $11.75
            Third quarter...................     $14.00            $ 7.25
            Fourth quarter..................     $ 9.50            $ 3.00

</TABLE>

         On December 19, 1996,  the last  reported  sale price for the Company's
Common Stock as reported by the Nasdaq National Market was $3.75 per share.

         As of December 19, 1996 there were  approximately 190 holders of record
of the Common Stock. This number excludes individual  stockholders holding stock
under nominee security position listings.

         The  Company  has not  declared  or paid any cash  dividends  since its
inception,  and does not  intend to pay any cash  dividends  in the  foreseeable
future.

The Stockholder Rights Plan

         Effective  December  6, 1996,  pursuant to a  Preferred  Shares  Rights
Agreement  (the  "Rights  Agreement")  between  the Company  and  Registrar  and
Transfer Company,  as Rights Agent (the "Rights Agent"),  the Company's Board of
Directors  declared  a  dividend  of one  right  (a  "Right")  to  purchase  one
one-hundredth  share of the Company's  Series A  Participating  Preferred  Stock
("Series  A  Preferred")  for  each  outstanding  share of  Common  Stock of the
Company.  The dividend is payable on December  19, 1996 (the  "Record  Date") to
stockholders  of record as of the close of  business  on that  date.  Each Right
<PAGE>
entitles the registered holder to purchase from the Company one one-hundredth of
a share of Series A  Preferred  at an exercise  price of $30.00  (the  "Purchase
Price"),  subject to adjustment in the event the Company  declares a dividend on
the Common Stock payable in Common Stock,  subdivides  the number of outstanding
shares of Common  Stock into a larger  number of such  shares,  or combines  the
number  of  outstanding  shares of Common  Stock  into a smaller  number of such
shares,  among other  circumstances.  In addition,  under certain  circumstances
described more fully in the Rights Agreement,  the Rights may become exercisable
for a number of shares of  Common  Stock  having a value  equal to two times the
Purchase Price.

         The Rights  approved by the Board of Directors  are designed to protect
and maximize the value of the outstanding equity interests in the Company in the
event of an  unsolicited  attempt by an  acquirer  to take over the Company in a
manner or on terms not  approved by the Board of  Directors.  Takeover  attempts
frequently  include coercive tactics to deprive the Company's Board of Directors
and its  stockholders  of any effective  opportunity  to determine the Company's
future.

         A copy of the Rights Agreement is attached as Exhibit 99.1 to this Form
10-K, and is incorporated herein by reference.
<PAGE>
Item 6.  Selected Financial Data

         Set forth below is the  selected  consolidated  financial  data for the
Company for the three fiscal years ended  September 30, 1996. The following data
should be read in conjunction with the Company's financial  statements,  related
notes thereto, and "Management's  Discussion and Analysis of Financial Condition
and Results of Operations."
<TABLE>
<CAPTION>
                                    SELECTED CONSOLIDATED FINANCIAL DATA
                                   (in thousands, except per share data)

                                                                        For the years ended September 30,
                                                                        ---------------------------------- 
                                                                            1996        1995         1994
                                                                            ----        ----         ----
<S>                                                                     <C>           <C>           <C>
Statement of Operations Data:
Revenues:
    Product sales ...................................................   $  5,777     $  1,852       $   --
    Revenues from development agreements ............................      1,100           --           --
                                                                        --------     --------       ------
        Total revenues ..............................................      6,877        1,852           --
                                                                        --------     --------       ------
Operating costs and expenses:
    Cost of product sales ...........................................      3,661        1,128           --
    Research and development ........................................      3,988        2,545        1,432
    Selling, general, and administrative ............................     11,030        5,775        1,782
                                                                        --------     --------       ------
        Total operating costs and expenses ..........................     18,679        9,448        3,214
                                                                        --------     --------       ------
    Operating loss ..................................................    (11,802)      (7,596)      (3,214)

Other income (expense):
    Interest income (expense), net ..................................      1,438          604         (185)
    Other expense, net ..............................................       (224)         (59)          (2)
                                                                        --------     --------       ------
        Total other income (expense) ................................      1,214          545         (187)
                                                                        --------     --------       ------
    Net loss........................................................    $(10,588)    $ (7,051)    $ (3,401)
                                                                        ========     ========     ======== 

Net loss per share..................................................   $   (1.07)
                                                                       ========= 
Weighted average shares outstanding .................................      9,875

Pro forma net loss per share ........................................                $  (0.93)    $  (0.48)
                                                                                     ========     ======== 
Pro forma weighted average shares outstanding .......................                   7,574        7,020


</TABLE>
<PAGE>
<TABLE>
<CAPTION>
                                                                                           September 30,
                                                                            ------------------------------------------
                                                                               1996             1995              1994
                                                                               ----             ----              ----
<S>                                                                         <C>             <C>                 <C>
Balance Sheet Data:
Cash and cash equivalents and short- and long-term
    investments.....................................................        $19,534         $ 31,061            $  640
Working capital.....................................................         17,235           30,054               301
Total assets........................................................         25,511           34,886             1,773
Redeemable Preferred Stock..........................................              -                -             6,002
Total stockholders' equity (deficit)................................         23,077           33,342            (5,487)


</TABLE>

Item 7.  Management's Discussion and Analysis of Financial Condition and Results
         of Operations

         This  Annual  Report  on Form 10-K  contains  certain  statements  of a
forward-looking  nature  relating  to  future  events  or the  future  financial
performance of the Company. Such statements are only predictions, and the actual
events or results  may  differ  materially  from the  results  discussed  in the
forward-looking  statements.  Factors  that could  cause or  contribute  to such
differences  include those discussed below under  "Business  Considerations"  as
well as those discussed in other filings made by the Company with the Securities
and Exchange Commission.

Results of Operations

Fiscal Year ended  September 30, 1996 compared with Fiscal Year ended  September
30, 1995

         The Company's  product  sales are generated  entirely from sales of the
Company's Sonic  Accelerated  Fracture Healing System ("SAFHS") Model 2A device.
For fiscal 1996,  product  sales were $5.8 million as compared with $1.9 million
for fiscal 1995, which was the period in which the Company first recorded sales.
International  product  sales were 14% of total  product  sales in fiscal  1996;
there were no international product sales in fiscal 1995.

         In fiscal 1996, the Company  recorded  revenues of $1.1 million related
to development  agreements with Teijin Limited, a Japanese corporation.  No such
revenues were reported for fiscal 1995. These  development  agreements cover two
of  the   Company's   technologies:   (a)   the   SAFHS   device   and  (b)  the
mechanical-stress  device under  development.  The SAFHS agreement  provides for
milestone  payments to the Company for Teijin's  development  of the product for
launch in Japan. The Company will manufacture and supply SAFHS devices to Teijin
for clinical  trials and subsequent  sales in Japan.  Teijin will be responsible
for complying with the regulatory  requirements  and marketing and  distributing
the  SAFHS  device  in  Japan.  The  mechanical-stress  agreement  provides  for
milestone  payments to the Company that will  support,  in part,  the  Company's
clinical  trials in the United States in exchange for a first option in favor of
Teijin to negotiate a development and distribution agreement for this device for
the Japanese market.
<PAGE>
         Cost of product  sales was $3.7 million for fiscal 1996,  compared with
$1.1 million for fiscal 1995. Included in cost of sales were royalties, the cost
of manufacture of the SAFHS device by outside sources,  and the in-house cost of
refurbishment and quality assurance  activities.  Excluding  revenues related to
development  agreements,  gross  profit for 1996 was $2.1  million  (or 37% as a
percentage of product  sales),  compared  with $724,000 (or 39%) for 1995.  This
$1.4  million  increase  (or 192%) in gross  profit was  principally  due to the
increase in product  volume,  while the decrease in gross profit  percentage was
due primarily to higher warranty costs.

         Research  and  development  expenses in fiscal 1996  increased  to $4.0
million from $2.5 million in fiscal 1995.  The increase of $1.4 million (or 57%)
was  primarily  the result of increased  staff,  additional  research  projects,
expanded  efforts in designing and building the  mechanical-stress  device,  and
extensive analyses of clinical data associated with the SAFHS therapy.

         Selling,  general, and administrative expenses in fiscal 1996 increased
to $11.0  million from $5.8 million in fiscal 1995. Of the $5.3 million (or 91%)
increase,  $3.2  million  was due to sales and  marketing  efforts in the United
States, including expansion of the direct sales force and related commissions on
sales.  The  remaining  $2.1  million  increase  was  primarily  due to expanded
activities of the Company's subsidiary in Germany;  increased domestic expenses,
including  rent,  utilities,  and  depreciation;  and legal fees associated with
litigation and patent matters.

         Net  interest  income in fiscal 1996  increased  to $1.4  million  from
$604,000 in fiscal 1995, principally due to a full year's interest earned on the
proceeds from the Company's Initial Public Offering in July 1995. Other expense,
net for fiscal  1996  increased  to  $224,000  from  $59,000  for  fiscal  1995,
principally due to the settlement of a legal action by the Company in the second
quarter 1996.

         The Company  incurred net losses of $10.6  million,  or $1.07 per share
(per share data based upon weighted  average shares  outstanding,  which exclude
options  because  they are  antidilutive),  in fiscal  1996  compared  with $7.1
million,  or $0.93 per share  (per  share  data  based  upon pro forma  weighted
average  shares  outstanding),  in fiscal 1995. The increase of $3.5 million (or
47%) in net loss was caused principally by the factors discussed above.

Fiscal Year ended  September 30, 1995 compared with Fiscal Year ended  September
30, 1994

         Product  sales in fiscal 1995 were $1.9  million  due to the  Company's
commencement of commercial distribution of its initial SAFHS device, SAFHS Model
2A, in October  1994.  Cost of  product  sales of $1.1  million  in fiscal  1995
principally resulted from the cost of manufacture of the SAFHS device by outside
sources as well as the cost of  inspection  of the  manufactured  product.  Also
included in cost of sales were royalties and costs related to the  establishment
of in-house  manufacturing and ancillary  operations.  Gross profit for 1995 was
$724,000,  or 39% as a  percentage  of  revenues.  There  were  no  revenues  or
associated cost of product sales in fiscal 1994.

         Research  and  development  expenses in fiscal 1995  increased  to $2.5
million from $1.4 million in fiscal 1994.  The increase of $1.1 million (or 78%)
was primarily the result of expenditures  associated with the development of the
SAFHS 2000 (a  second-generation  model of the SAFHS Model 2A device);  expanded
efforts in designing and building the mechanical-stress device; increased staff;
and the cost of SAFHS  devices  shipped  in  connection  with  certain  clinical
prescriptions for which reimbursement is currently not available.
<PAGE>
         Selling,  general, and administrative expenses in fiscal 1995 increased
to $5.8 million from $1.8 million in fiscal 1994.  Of the $4.0 million (or 224%)
increase,  $2.2 million was due to sales and marketing efforts in the commercial
introduction of the SAFHS Model 2A, including hiring and training a direct sales
force. The remainder of the $4.0 million increase was primarily due to increased
expenses,  including rent,  utilities,  and  depreciation,  of the Company's new
facilities in  Piscataway,  New Jersey;  increased  legal fees related to patent
work  and  litigation;  expansion  of the  administrative  staff  and  increased
reimbursement activities; and the establishment of a subsidiary in Germany.

         Net interest  income in fiscal 1995 increased to $604,000 from $185,000
of net interest  expense in fiscal 1994,  principally  due to interest earned on
the proceeds  from the Series B Preferred  Stock  financing in November 1994 and
interest  earned in the  fourth  quarter  of fiscal  1995 on  proceeds  from the
Company's Initial Public Offering in July 1995.

         The Company  incurred net losses of $7.1  million,  or $0.93 per share,
and $3.4 million, or $0.48 per share, in fiscal 1995 and 1994, respectively (per
share  data based  upon pro forma  weighted  average  shares  outstanding).  The
increase  of $3.7  million (or 107%) in net loss was caused  principally  by the
factors discussed above.

Liquidity and Capital Resources

         Since inception, the Company's expenses have significantly exceeded its
revenues,  resulting in an accumulated deficit of $23.2 million at September 30,
1996. Until July 1995, the Company had funded its operations  primarily  through
the private  placement of equity securities  aggregating $17.6 million.  On July
25, 1995, the Company  completed its Initial Public Offering of 2,500,000 shares
of Common  Stock at a  purchase  price of $11.00 per share,  for  aggregate  net
proceeds of approximately $24.7 million. On August 15, 1995, the underwriters of
the Initial  Public  Offering  purchased an additional  375,000 shares of Common
Stock,  pursuant to the  over-allotment  option,  for  aggregate net proceeds of
approximately $3.8 million.

         In  fiscal  1996,  the  Company  used  net cash of  $11.6  million  for
operating activities,  primarily for continued commercial marketing of the SAFHS
Model 2A; an increased level of research and development expenditures; and a net
increase  of $1.3  million in  working  capital  items.  The  Company's  capital
expenditures  in 1996 were  $411,000.  The Company  estimates that equipment and
furnishings  to  expand  in-house   manufacturing  and  administrative   support
activities will require capital  expenditures of  approximately  $800,000 during
each of the next two years.

         The  Company  plans to  finance  its  capital  needs  principally  from
existing  capital  resources,  which the Company  believes will be sufficient to
fund its operations  into fiscal 1998.  Additional  funding may not be available
when needed or on terms  acceptable to the Company,  which would have a material
adverse  effect on the  Company's  business,  financial  condition,  results  of
operations, and cash flows.
<PAGE>
Business Considerations

Limited Operating History

         The Company has a limited  history of  operations  that,  to date,  has
consisted primarily of research and development, product engineering,  obtaining
FDA approval for its SAFHS device,  developing  the Company's  initial sales and
marketing  organization,  supervising  the  manufacture of the SAFHS device by a
contract manufacturer, and commencing sales of its SAFHS device domestically and
internationally.  The Company was formed for the purpose of acquiring  the SAFHS
technology  and  related  clinical  data,  as  well  as  the   mechanical-stress
technology.  The Company has  limited  direct  clinical  trial  experience.  The
Company  received  approval of its PMA  application  for and began marketing its
SAFHS device in October 1994, and therefore has limited  experience in marketing
and selling its products in commercial  quantities.  The Company had no previous
direct manufacturing experience prior to commencing in-house refurbishing of its
SAFHS device in fiscal  1996.  Whether the Company can  successfully  manage the
transition to a larger-scale  commercial  enterprise will depend,  in part, upon
further  developing  its  distribution  network;   successfully  developing  its
manufacturing  capability;   and  strengthening  its  financial  and  management
systems,   procedures,   and  controls.   Failure  to  make  such  a  transition
successfully  would have a material  adverse  effect on the Company's  business,
financial condition, results of operations, and cash flows.

Uncertainty of Market Potential and Market Acceptance

         The  Company's  SAFHS  device  has  been  approved  by the FDA to treat
closed, cast-immobilized,  fresh fractures of the tibia and distal radius within
approved indications. The market potential of the Company's SAFHS device depends
on the acceptance by the medical  community of the use of ultrasound  technology
as a safe and effective  method of treating  fresh  fractures and the use of the
Company's SAFHS device by physicians for treatment of these fractures. The SAFHS
device is based upon new technology  that had not been used  previously to treat
bone fractures.  In addition, the proper placement of the device at the fracture
site is important for the proper delivery of the therapy,  and acceptance of the
therapy  will depend,  in part,  on whether the Company can continue to instruct
physicians  and  patients  in the  proper  use of the  device.  There  can be no
assurance that  physicians will prescribe  treatment using the SAFHS device.  In
addition,  use of the SAFHS device depends significantly on the availability and
extent of third-party reimbursement, increased awareness of the effectiveness of
the SAFHS  technology,  and focused  sales  efforts by the  Company.  Electrical
stimulation devices, the only other non-invasive devices commercially  available
for  the  treatment  of bone  fractures,  have  gained  only  limited  physician
acceptance  to date.  Failure of the  Company's  SAFHS device to achieve  market
acceptance  would  have a material  adverse  effect on the  Company's  business,
financial condition, results of operations, and cash flows.

Dependence on Third-Party Reimbursement

         The Company  has not secured  general  reimbursement  approval  for its
SAFHS  device  from  any  large  third-party  payor,  and to date  has  received
reimbursement  approval from  third-party  payors only on a case-by-case  basis.
Successful  sales of SAFHS devices in the United States and other markets depend
on the availability of adequate  reimbursement  from third-party  payors such as
managed care organizations,  workers' compensation  insurers,  private insurance
plans,  and government  entities.  There is significant  uncertainty  concerning
<PAGE>
third-party  reimbursement  for the use of any medical device  incorporating new
technology,  such as the SAFHS device.  Reimbursement by a third-party payor may
depend on a number of factors,  including the payor's determination that the use
of the SAFHS device is safe and effective,  not experimental or investigational,
medically  necessary,  appropriate for the specific patient, and cost-effective.
In addition,  devices  incorporating  a new technology  are often  prescribed by
physicians for  indications  other than those  approved by the FDA  (off-label).
Reimbursement  for such  off-label  uses may not be  available  or  permitted by
government regulations. Since reimbursement approval is required from each payor
individually, seeking such approvals is a time-consuming and costly process that
requires the Company to provide  scientific and clinical  support for the use of
the SAFHS  device to each  payor  separately.  There  can be no  assurance  that
third-party reimbursement will be consistently available for the SAFHS device or
any  of the  Company's  other  products  that  may be  developed  or  that  such
third-party  reimbursement  will be  adequate.  The United  States  Congress  is
currently  considering  various  proposals to significantly  reduce Medicare and
Medicaid expenditures. Such proposals, if enacted, could have a material adverse
effect on the Company's business,  financial  condition,  results of operations,
and cash flows.  Currently,  the SAFHS device is not covered  under the Medicare
program. In addition, third-party payors are increasingly limiting reimbursement
coverage for medical devices, and in many instances have put pressure on medical
suppliers to lower their prices. The Company currently has limited experience in
obtaining  reimbursement  for its  products in  countries  other than the United
States.   Lack  of  or  inadequate   reimbursement  by  governmental  and  other
third-party  payors for the  Company's  products  would have a material  adverse
effect on the Company's business,  financial  condition,  results of operations,
and cash flows.

History of Losses; Profitability Uncertain; Fluctuations in Operating Results

         The Company has incurred  substantial losses since inception and, as of
September 30, 1996, had an accumulated  deficit of approximately  $23.2 million.
Such losses have resulted  principally  from expenses  associated with obtaining
FDA approval for the Company's  SAFHS device,  engineering  and  developing  the
SAFHS and  mechanical-stress  devices,  and establishing and expanding the sales
and  marketing  organization  in the United  States and in Europe.  The  Company
expects  to  generate  substantial  additional  losses in the  future  primarily
attributable to development  of, and clinical trials for, the  mechanical-stress
device,  clinical trials for expanded  indications of the SAFHS technology,  the
continued   expansion  of  domestic  and   international   sales  and  marketing
activities,  and the expansion of  manufacturing  capability.  In addition,  the
Company expects its operating  expenses to increase  significantly over the next
several years due to increased costs of research and  development,  primarily in
connection  with the  mechanical-stress  device and clinical trials for expanded
applications  of the SAFHS  technology,  expansion of direct sales and marketing
activities,  increase of in-house  manufacturing  capability,  and  expansion of
administrative functions. Results of operations may fluctuate significantly from
quarter  to  quarter  based  on  such   factors,   and  will  also  depend  upon
reimbursement by third-party payors, new product introductions by the Company or
its  competitors,  timing of regulatory  actions,  expenditures  incurred in the
research and  development of new products,  and the mix of product sales between
the United States and abroad.  The Company's  future revenues and  profitability
are  critically  dependent  on whether it can  successfully  market and sell its
SAFHS  device.   There  can  be  no  assurance  that  significant   revenues  or
profitability will ever be achieved.
<PAGE>
Dependence on Principal Product

         All of the  Company's  product  revenues to date have been derived from
sales of its SAFHS  device.  The SAFHS device is expected to continue to account
for substantially all of the Company's revenues for the foreseeable  future. The
Company's   long-term   success   will   depend   in  part  on  the   successful
commercialization  of  the  SAFHS  device  for  its  approved  indications,  the
development  and  regulatory  approval  of SAFHS  devices  to  treat  additional
indications,  and the acceptance of the SAFHS treatment by the medical community
and third-party  payors.  Failure to gain market acceptance for the SAFHS device
or to obtain adequate reimbursement coverage,  among other factors, would have a
material adverse effect on the Company's business,  financial condition, results
of operations, and cash flows.

Limited Sales and Marketing Experience

         The Company  began  marketing  the SAFHS device in the United States in
October 1994.  Because of limited market  awareness of SAFHS therapy,  the sales
effort is a lengthy  process,  requiring the Company to educate  physicians  and
third-party payors regarding the clinical benefits and cost-effectiveness of the
SAFHS  technology,  to assist  patients  in the  reimbursement  process,  and to
provide  product  support to patients.  The Company uses a combination of direct
sales  representatives and a network of  independent  sales  representatives  to
market and distribute its products.  Independent sales representatives typically
market  orthopaedic  and other  devices  for a variety of  manufacturers.  These
representatives  do not have prior  experience  in the sale or use of devices to
accelerate  fresh  fracture  healing.  There  can  be no  assurance  that  these
independent sales  representatives will commit the necessary resources to market
the SAFHS  device  effectively  or that the  Company's  direct  sales staff will
succeed  in its  efforts to  promote  the SAFHS  technology  to  physicians  and
third-party payors.

         The Company  markets  the SAFHS  device in several  European  countries
through  independent  distributors  and sales agents,  and has recorded sales in
Germany and Austria.  The Company also will collaborate with marketing  partners
in the  Pacific  Rim to assist with  regulatory  requirements  and to market and
distribute  the  Company's  products.  The  Company  has  entered  into one such
agreement  covering Japan with Teijin Limited, a Japanese  corporation.  Each of
the foreign  markets in which the Company sells,  or plans to sell, its products
has its own regulatory requirements and approvals, and the distribution,  price,
and market structure to be established by the Company might vary from country to
country.  No assurance can be given that the Company can successfully market the
SAFHS device in Europe or that it can secure  additional  marketing  partners in
the Pacific Rim on terms acceptable to the Company, or at all.

         The  Company's  marketing  success in the United States and abroad will
depend  on  whether  it can  gain  further  regulatory  approvals,  successfully
demonstrate the cost-effectiveness of its products, further develop direct sales
capability  to  augment  its  existing   distribution   network,  and  establish
arrangements with distributors and marketing partners. Failure by the Company to
successfully market its products  domestically and internationally  would have a
material adverse effect on the Company's business,  financial condition, results
of operations, and cash flows.
<PAGE>
Risks Associated with International Operations

         The Company  established a subsidiary in Germany  during fiscal 1995 as
part of its strategy to  introduce  the SAFHS  device in Europe,  and  commenced
commercial  distribution  of the device in  certain  European  countries  during
fiscal 1996.  International  product  sales were 14% of total  product  sales in
fiscal  1996,  and such  revenues  are  expected  to continue  to  represent  an
increasing  percentage  of  total  revenues.   The  Company  believes  that  its
profitability  and continued  growth will require  expansion of sales in foreign
markets,  and so it intends to  continue  to expand its  operations  outside the
United States and enter  additional  international  markets,  which will require
significant  management  attention  and  financial  resources.  There  can be no
assurance  that the Company  will be able to achieve  market  acceptance  of its
products in international  markets or maintain or increase  international market
demand for its products.

         The Company's  international  product sales are  denominated in foreign
currencies.  Management  can give no  assurances  that  changes in currency  and
exchange rates will not materially  affect the Company's  revenues,  costs, cash
flows,  and  business  practices  and plans.  Additional  risks  inherent in the
Company's international business activities generally include unexpected changes
in regulatory requirements,  tariffs and other trade barriers, extended accounts
receivable payment cycles,  difficulties in managing  international  operations,
potentially adverse tax consequences,  restrictions on repatriation of earnings,
and the burdens of complying  with a wide variety of foreign laws.  There can be
no assurances  that such factors will not have a material  adverse effect on the
Company's  future  international  revenues and,  consequently,  on the Company's
business, financial condition, results of operations, and cash flows.

Dependence on Single Sources of Manufacture and Supply

         The  Company's  SAFHS  device is currently  manufactured  by a contract
manufacturer.   The  purchase  orders  between  the  Company  and  the  contract
manufacturer  requires the Company to purchase a minimum number of SAFHS devices
from the contract manufacturer for the term of the agreement, effective to 1998.
The  contract  manufacturer's  facility  has  been  inspected  by the FDA and is
currently  the only  facility  approved for the  production  of the SAFHS device
under the FDA's Good Manufacturing  Practices ("GMP") requirements.  Any failure
by  the  contract  manufacturer  to  maintain  its  manufacturing   facility  in
accordance with GMP requirements  could result in the inability of such contract
manufacturer to manufacture the SAFHS device and may limit the Company's ability
to deliver  the SAFHS  device to  physicians  or  patients,  which  would have a
material adverse effect on the Company's business,  financial condition, results
of operations, and cash flows.

         Several components  incorporated in the SAFHS device currently are, and
will continue to be, manufactured by single-source vendors. For certain of these
components,  there  are  relatively  few  alternative  sources  of  supply,  and
establishing  additional or replacement  suppliers for such components cannot be
accomplished  quickly. Any supply interruption from single-source  vendors would
have a material adverse effect on the Company's business,  financial  condition,
results of operations, and cash flows.
<PAGE>
No Manufacturing Experience

         The Company has  developed  in-house  refurbishing  capability  for the
SAFHS device, and is developing in-house manufacturing capability,  although the
Company  intends to  continue  to use its  current  manufacturer  as the primary
supplier of its products for the foreseeable  future.  Before  manufacturing the
SAFHS  devices for  commercial  use,  the  Company's  facility  will require FDA
determination  of compliance  with GMP  requirements.  There can be no assurance
that the Company will be able to establish manufacturing capability,  obtain GMP
approval,  make the  transition to  commercial  manufacturing  successfully,  or
manufacture its products cost-effectively, or at all.

Intense Competition and Risks Associated with Rapid Technological Change

         The medical device industry is  characterized  by intense  competition.
Many of the Company's  existing and  potential  competitors  have  substantially
greater financial,  marketing, sales, distribution, and technical resources than
the Company and more experience in research and  development,  clinical  trials,
regulatory matters,  manufacturing,  and marketing.  In addition,  most of these
companies  have  established  third-party   reimbursement  for  their  products.
Furthermore,  the medical  device  industry is  characterized  by rapid  product
development and technological  change.  The Company's products could be rendered
obsolete  or  uneconomical  by  technological  advances  by one or  more  of the
Company's  competitors or by other  therapies such as drugs to treat  conditions
addressed  by  the  Company's  products.   The  Company's  business,   financial
condition,  results of  operations,  and cash flows will depend upon whether the
Company can compete  effectively  with other  developers of such medical devices
and therapies.

         The   SAFHS   device    competes    with    non-invasive    bone-growth
electrical-stimulation   devices  and  with  various  surgical  treatments.  The
Company's mechanical-stress device to prevent bone loss related to osteoporosis,
if  developed  and  marketed,  will  compete  with drug  therapies  and exercise
regimens.  There can be no  assurance  that such device will ever be  developed,
approved by the FDA, or become commercially available.  Four companies currently
market  electrical-stimulation  devices for the treatment of non-union fractures
(fractures that remain unhealed after nine months). The Company believes that at
least  one of these  companies  is  conducting  clinical  trials  for the use of
electrical stimulation for the treatment of fresh fractures. In addition,  other
companies are  developing a variety of products and  technologies  to be used in
the  treatment  of  fractures  and   osteoporosis,   including  growth  factors,
bone-graft substitutes, and exercise/physical therapy equipment. There can be no
assurance that  competitors  will not develop  products that are superior to the
Company's products,  achieve greater market acceptance,  or render the Company's
technology and products obsolete or  noncompetitive.  As a result, the Company's
long-term  viability  may  depend on  whether it can  continue  to  develop  new
products.  There can be no  assurance  that the Company  will be able to compete
successfully  against current or future competitors or that competition will not
have a material adverse effect on the Company's business,  financial  condition,
results of operations, or cash flows.
<PAGE>
Extensive Government Regulation

         The  manufacture  and sale of medical  devices is subject to  extensive
government  regulation in the United States and in other countries.  The process
of obtaining FDA and other required regulatory  approvals can be time-consuming,
expensive,  and uncertain,  frequently  requiring  several years from commencing
clinical trials to receiving  regulatory  approval.  For example, the process of
conducting  clinical  trials and  obtaining  the PMA for the SAFHS Model 2A took
nine  years.  The  Company  will be  required  to file PMA  supplements  for new
indications for its SAFHS technology. In addition, if modifications to its SAFHS
Model 2A affect safety or efficacy,  a PMA supplement must be filed and approved
by the FDA. These  supplements may not be accepted by the FDA, in which case the
Company  would be required to  undertake  and complete the entire PMA process in
order to use the  SAFHS  Model  2A to  treat  those  additional  indications  or
commercialize a modified device. Furthermore, there can be no assurance that the
Company will obtain any such approvals on a timely basis, or at all, which could
have a material adverse effect on the Company's business,  financial  condition,
results  of   operations,   and  cash  flows.   The  Company  has  made  certain
nonperformance-related  changes  to the  SAFHS  Model 2A since  the  device  was
approved by the FDA. There can be no assurance that the FDA will not require the
Company to file a PMA  supplement,  which would result in  additional  costs and
delays in marketing the device. The Company filed a PMA supplement for its SAFHS
2000  in  December  1995.  The  Company  will  also  be  required  to file a PMA
application  for its  mechanical  stress  device,  if and  when  development  is
completed.  No assurance can be given that such application will be made, and if
made,  that a PMA will be granted on a timely basis, or at all. In order for the
Company  to  market  the  SAFHS  device  or  any  future   products  in  foreign
jurisdictions,  it will  be  required  to seek  regulatory  approvals  in  those
jurisdictions.  No assurance  can be given that the Company can obtain  required
regulatory approvals in foreign countries on a timely basis, or at all.

         Regulatory approvals,  if granted, may include significant  limitations
on the  indicated  uses for which a product  may be  marketed.  FDA  enforcement
policy  strictly  prohibits  the  promotion  by  the  Company  and  any  of  its
distributors of approved  medical  devices for off-label  uses.  There can be no
assurance that the Company will not become subject to FDA actions as a result of
physicians'  prescribing  the SAFHS  device for  off-label  uses.  In  addition,
product  approvals  may be  withdrawn  for  failure  to comply  with  regulatory
standards or the occurrence of unforeseen  problems following initial marketing.
The  Company  is  required  to  adhere  to FDA  regulations  setting  forth  GMP
requirements relating to tests,  control, and documentation.  Ongoing compliance
with GMP and other  applicable  regulatory  requirements  is  monitored  through
periodic  inspections by state and federal  agencies,  including the FDA, and by
comparable agencies in other countries. Failure to comply with applicable United
States and  international  regulatory  requirements can result in failure of the
relevant government agency to grant pre-market approval for devices,  withdrawal
of approval,  total or partial  suspension of  production,  fines,  injunctions,
civil  penalties,  recall or  seizure of  products,  and  criminal  prosecution.
Furthermore,  changes in existing  regulations or adoption of new regulations or
policies  could  prevent the Company  from  obtaining,  or affect the timing of,
future regulatory approvals or clearances.

         There  can be no  assurance  that the  Company  will be able to  obtain
necessary regulatory  approvals or clearances in the United States,  Europe, the
Pacific Rim, or elsewhere on a timely basis,  or at all. Delays in receipt of or
failure to receive such approvals or clearances, the loss of previously received
approvals or clearances, or failure to comply with existing or future regulatory
requirements  would have a material  adverse  effect on the Company's  business,
financial condition, results of operations, and cash flows.
<PAGE>
Limited Protection of Patents, Copyrights and Proprietary Rights; Risk of Patent
Infringement

         The  Company  relies  on  a  combination  of  patents,  trade  secrets,
copyrights,   and   confidentiality   agreements  to  protect  its   proprietary
technology,  rights, and know-how.  No assurance can be given that the Company's
patent  applications  will issue as patents or that any issued  patents owned by
the Company will provide  competitive  advantages for the Company's  products or
will not be  successfully  challenged  or  circumvented  by  competitors.  Under
current law, patent  applications in the United States are maintained in secrecy
until  patents are issued,  and patent  applications  in foreign  countries  are
maintained in secrecy for a period after filing. The right to a device patent in
the United  States is  attributable  to the first to invent the device,  not the
first to file a patent application. Accordingly, the Company cannot be sure that
its products or technologies do not infringe  patents that may be granted in the
future  pursuant  to pending  patent  applications  or that its  products do not
infringe any patents or proprietary  rights of third parties.  In the event that
any relevant claims of third-party  patents are upheld as valid and enforceable,
the Company could be prevented from selling its products or could be required to
obtain  licenses  from the owners of such patents or be required to redesign its
products to avoid  infringement.  There can be no assurance  that such  licenses
would be  available  or,  if  available,  would be on  terms  acceptable  to the
Company,  or that the Company would be successful in any attempt to redesign its
products or processes to avoid  infringement.  The  Company's  failure to obtain
these licenses or to redesign its products would have a material  adverse effect
on the Company's business,  financial condition, results of operations, and cash
flows. The Company also relies on trade secrets and proprietary information, and
enters into  confidentiality  agreements  with its employees,  consultants,  and
advisors.  There  can be no  assurance  that the  obligations  to  maintain  the
confidentiality   of  such  trade  secrets  and  proprietary   information  will
effectively  prevent  disclosure of the Company's  confidential  information  or
provide  meaningful  protection  for the Company's  confidential  information if
there is unauthorized use or disclosure,  or that the Company's trade secrets or
proprietary  information  will not be  independently  developed by the Company's
competitors. The Company also holds rights to copyrights on text and on software
developed  by or for it for use in its SAFHS  device.  There can be no assurance
that any copyrights owned by the Company will provide competitive advantages for
the  Company's  products  or  will  not be  challenged  or  circumvented  by its
competitors.   Litigation   may  be  necessary  to  defend   against  claims  of
infringement,  to enforce  patents  and  copyrights  issued or  licensed  to the
Company,  or to protect trade secrets,  and could result in substantial cost to,
and  diversion  of effort by, the Company.  There can be no  assurance  that the
Company would prevail in any such litigation.

Uncertainty of New Product Development

         The Company plans to seek FDA approval to commence  clinical  trials in
the near future to expand the approved  indications for the SAFHS  technology to
include other fractures,  spine fusion,  and cartilage repair. In addition,  the
Company has developed a mechanical-stress device to prevent bone loss related to
osteoporosis.  The Company has  commenced a pilot  clinical  trial in the United
States,  and  anticipates  that it  will be  required  to  undertake  additional
development  activities  and human  clinical  trials before  seeking  regulatory
approval for this device.  There can be no assurance that the  mechanical-stress
<PAGE>
device will prove to be safe and efficacious, that product development will ever
be  successfully  completed,  that a PMA, if applied for, will be granted by the
FDA  on a  timely  basis,  or  at  all,  that  adequate  levels  of  third-party
reimbursement will be available, or that the mechanical-stress  device will ever
achieve  commercial  acceptance.  The  Company's  inability to show  efficacy in
additional  applications of its SAFHS  technology,  to successfully  develop the
mechanical   stress  device,  or  to  achieve  market  acceptance  of  such  new
applications  and products would have a material adverse effect on the Company's
business, financial condition, results of operations, and cash flows.

Royalty Payment Obligations; Potential Loss of Exclusive License

         The Company is required to pay a royalty on any net revenues from sales
of the mechanical-stress  device, if such device is successfully  developed.  In
the  event  that  the  Company  does not  commercially  exploit  the  underlying
technology as required by the license agreement for such technology, the Company
will forfeit its exclusive license to the  mechanical-stress  technology.  There
can be no assurance that the Company will  commercially  exploit such technology
within the meaning of such license,  and  forfeiture of such  exclusive  license
could  have a  material  adverse  effect on the  Company's  business,  financial
condition, results of operations, and cash flows.

Product Liability and Insurance

         The  Company  faces an  inherent  business  risk of exposure to product
liability  claims in the event that the use of its  products  is alleged to have
resulted in adverse  effects.  There can be no assurance that  liability  claims
will not exceed the coverage limits of the Company's  insurance policies or that
such insurance will continue to be available on commercially  reasonable  terms,
or at all. Consequently,  product liability claims could have a material adverse
effect on the Company's business,  financial  condition,  results of operations,
and cash flows.

Reliance on Key Personnel

         The Company's success depends to a significant  extent upon a number of
key management and technical personnel.  The loss of the services of one or more
key employees  could have a material  adverse effect on the Company's  business,
financial  condition,  results of operations,  and cash flows.  The Company also
believes  that its future  success  will  depend in large part on whether it can
attract and retain highly skilled  technical,  management,  sales and marketing,
and  reimbursement  personnel.  Competition  for such personnel is intense,  and
there can be no assurance  that the Company will be successful in attracting and
retaining such  personnel.  The Company's  failure to attract,  hire, and retain
these personnel would have a material adverse effect on the Company's  business,
financial condition, results of operations, and cash flows.

Possible Volatility of Stock Price

         The trading  price of the  Company's  Common  Stock could be subject to
significant  fluctuations  in  response to  variations  in  quarterly  operating
results,  announcements  of  technological  innovations  or new  products by the
Company or its competitors,  changes in earning  estimates by analysts,  general
conditions  in the medical  device  industry,  and other  events or factors.  In
<PAGE>
addition,  the stock market in general has experienced  extreme price and volume
fluctuations  that  have  affected  the  market  price  for  many  companies  in
industries  similar  or  related  to that of the  Company  and  that  have  been
unrelated  to  the  operating  performance  of  these  companies.  These  market
fluctuations  may  adversely  affect the market  price of the  Company's  Common
Stock.

Certain Anti-Takeover Provisions

         The Company's Second Amended and Restated  Certificate of Incorporation
grants the Board of Directors the  authority to issue up to 3,000,000  shares of
preferred  stock of the  Company,  $0.0001  par value per share (the  "Preferred
Stock"), in one or more series and to fix the rights,  preferences,  privileges,
and restrictions thereof,  including dividend rights, dividend rates, conversion
rights,  voting rights,  terms of  redemption,  redemption  prices,  liquidation
preferences, and the number of shares constituting any series or the designation
of such series,  without further vote or action by the  stockholders.  Effective
December  6, 1996,  pursuant to the Rights  Agreement,  the  Company's  Board of
Directors  declared  a  dividend  of  one  Right  to  purchase,   under  certain
circumstances, one one-hundredth share of the Company's Series A Preferred Stock
for each outstanding share of Common Stock of the Company.  Although the Company
has no present plans to issue any additional  shares of Preferred  Stock, it may
do so in the future. See Part II, Item 5, "Market for Registrant's Common Equity
and Related Stockholder  Matters--The  Stockholder Rights Plan," and the copy of
the  Rights  Agreement  attached  as  Exhibit  99.1 to this  Form  10-K for more
information relating to the Stockholder Rights Plan.

         The Company's  By-Laws specify  procedures for director  nominations by
stockholders  and  the  submission  of  other  proposals  for  consideration  at
stockholder  meetings.  Certain  provisions  of Delaware law  applicable  to the
Company could also delay or make more difficult a merger, tender offer, or proxy
contest involving the Company, including Section 203, which prohibits a Delaware
corporation  from  engaging  in any  business  combination  with any  interested
stockholder  for a period of three years unless certain  conditions are met. The
possible  issuance of Preferred Stock  (including  pursuant to the Rights Plan),
the procedures required for director nominations and stockholder proposals,  and
Delaware  law could have the effect of  delaying,  deferring,  or  preventing  a
change in control of the Company,  including without limitation,  discouraging a
proxy contest,  making more difficult the acquisition of a substantial  block of
the  Company's  Common  Stock,  or limiting  the price that  investors  might be
willing to pay in the future for shares of the Company's Common Stock.


Item 8.  Financial Statements and Supplementary Data

         The  information  in  response  to  this  item  is  set  forth  in  the
Consolidated  Financial  Statements beginning on page F-3 of this report on Form
10-K.


Item 9.  Changes in and Disagreements With Accountants on Accounting and 
         Financial Disclosure

         None.
<PAGE>
                                    PART III


Item 10.  Directors and Executive Officers of the Registrant

         Certain  information in response to this item is incorporated herein by
reference  to  "Election  of  Directors"  in  Exogen,  Inc.'s  Definitive  Proxy
Statement  dated on or about January 8, 1997 to be filed with the Securities and
Exchange  Commission ("SEC") and to "Executive  Officers" in Part I of this Form
10-K.  Information on compliance  with section 16(a) of the Securities  Exchange
Act of 1934 is  incorporated  herein by reference to "Compliance  with Reporting
Requirements"  in the  Company's  Proxy  Statement  dated on or about January 8,
1997.


Item 11.  Executive Compensation

         Information  in  response  to  this  item  is  incorporated  herein  by
reference to "Executive  Compensation  and Other  Information"  in the Company's
Definitive  Proxy  Statement  dated on or about January 8, 1997 to be filed with
the SEC.


Item 12.  Security Ownership of Certain Beneficial Owners and Management

         Information  in  response  to  this  item  is  incorporated  herein  by
reference to "Security Ownership of Certain Beneficial Owners and Management" in
the Company's Definitive Proxy Statement dated on or about January 8, 1997 to be
filed with the SEC.


Item 13.   Certain Relationships and Related Transactions

         Information  in  response  to  this  item  is  incorporated  herein  by
reference to "Certain  Transactions" in the Company's Definitive Proxy Statement
dated on or about January 8, 1997 to be filed with the SEC.
<PAGE>
                                     PART IV


Item 14. Exhibits, Financial Statement Schedules, and Reports on Form 8-K

(a)      Documents filed as a part of this Form 10-K:

          (1)      Financial Statements.  The following  Consolidated  Financial
                   Statements of Exogen,  Inc. and report of independent  public
                   accountants  relating  thereto  are filed with this report on
                   Form 10-K:

                         Consolidated  Balance  Sheets as of September  30, 1996
                         and 1995

                         Consolidated  Statements  of  Operations  for the years
                         ended  September 30, 1996,  1995, and 1994 

                         Consolidated  Statement  of  Changes  in  Stockholders'
                         Equity for the years ended  September  30, 1996,  1995,
                         and 1994

                         Consolidated  Statements  of Cash  Flows  for the years
                         ended  September  30,  1996,  1995,  and 1994  

                         Notes to Consolidated Financial Statements

          (2)      Financial  Statement  Schedules.  Schedule  II--Valuation and
                   Qualifying  Accounts for the years ended  September  30, 1996
                   and 1995.  Schedules  not  listed  above  have  been  omitted
                   because the  information  required to be set forth therein is
                   not  applicable  or is  shown in the  Consolidated  Financial
                   Statements or notes thereto.

         (3)       Exhibits.

                      3.1     Second   Amended  and  Restated   Certificate   of
                              Incorporation  of  the  Company.  Incorporated  by
                              reference  to Exhibit  3.1 to the  Company's  Form
                              10-Q for the third quarter ending June 30, 1995.
                      3.2     Amended  and  Restated   Bylaws  of  the  Company.
                              Incorporated  by  reference  to Exhibit 3.3 to the
                              Company's   Form   S-1   Registration    Statement
                              (Registration No. 33-92740).
                      4.1     See  Exhibits  3.1 and 3.2 for  provisions  of the
                              Certificate  of  Incorporation  and  Bylaws of the
                              Company defining rights of holders of Common Stock
                              of the Company.
                      10.1    Amended and Restated  Investors'  Rights Agreement
                              dated as of November  14, 1994 among the  Company,
                              the  investors  listed on Schedule A thereto,  and
                              the  individuals  listed on  Schedule  B  thereto.
                              Incorporated  by  reference to Exhibit 10.1 to the
                              Company's   Form   S-1   Registration    Statement
                              (Registration No. 33-92740).
<PAGE>
                      10.2    Asset Purchase Agreement dated as of March 1, 1993
                              among Applied Epigenetics, Inc. ("AEI"), Interpore
                              International,  Inc., and Interpore  Orthopaedics,
                              Inc.  Incorporated by reference to Exhibit 10.2 to
                              the  Company's  Form  S-1  Registration  Statement
                              (Registration No. 33-92740).
                      10.3    Employment   Agreement   dated  January  15,  1994
                              between  the  Company  and  Patrick  A.  McBrayer.
                              Incorporated  by  reference to Exhibit 10.3 to the
                              Company's   Form   S-1   Registration    Statement
                              (Registration No. 33-92740).
                      10.4    Employment   Agreement   dated  February  3,  1994
                              between the  Company and John Bohan.  Incorporated
                              by reference to Exhibit 10.4 to the Company's Form
                              S-1  Registration   Statement   (Registration  No.
                              33-92740).
                      10.5    Form of Consulting  Agreements between the Company
                              and each of Drs.  McLeod  and Rubin,  as  amended.
                              Incorporated  by  reference to Exhibit 10.5 to the
                              Company's   Form   S-1   Registration    Statement
                              (Registration No. 33-92740).
                      10.6    Form of Stock  Restriction  Agreement  between the
                              Company  and each of Drs.  McLeod  and  Rubin  and
                              Messrs.  Reisner,  Ryaby,  Talish,  McBrayer,  and
                              Bohan.  Incorporated  by reference to Exhibit 10.6
                              to the Company's Form S-1  Registration  Statement
                              (Registration No. 33-92740).
                      10.7    Form  of  Stock  Purchase  Agreement  between  the
                              Company and each of Messrs.  Reisner,  Ryaby,  and
                              Talish.  Incorporated by reference to Exhibit 10.7
                              to the Company's Form S-1  Registration  Statement
                              (Registration No. 33-92740).
                      10.8+   Manufacturing  Agreement  dated  January  20, 1994
                              between the Company and Hi- Tronics Designs,  Inc.
                              Incorporated  by  reference to Exhibit 10.8 to the
                              Company's   Form   S-1   Registration    Statement
                              (Registration No. 33-92740).
                      10.9    Form of 1993 Stock  Option Plan Option  Agreement.
                              Incorporated  by  reference to Exhibit 10.9 to the
                              Company's   Form   S-1   Registration    Statement
                              (Registration No. 33-92740).
                      10.10   1995   Stock   Option  /  Stock   Issuance   Plan.
                              Incorporated  by reference to Exhibit 10.10 to the
                              Company's   Form   S-1   Registration    Statement
                              (Registration No. 33- 92740).
                      10.11   Employee  Stock  Purchase  Plan.  Incorporated  by
                              reference to Exhibit 10.12 to the  Company's  Form
                              S-1  Registration   Statement   (Registration  No.
                              33-92740).
                      10.12   Lease  Agreement  dated  December  13, 1994 by and
                              between the Company and Siemens  Medical  Systems,
                              Inc. Incorporated by reference to Exhibit 10.13 to
                              the  Company's  Form  S-1  Registration  Statement
                              (Registration No. 33-92740).
<PAGE>
                      10.13   License Agreement dated March 26, 1992 between AEI
                              and  Drs.   McLeod  and  Rubin.   Incorporated  by
                              reference to Exhibit 10.14 to the  Company's  Form
                              S-1  Registration   Statement   (Registration  No.
                              33-92740).
                      10.14   SAFHS  Agreement  dated  November 30, 1995 between
                              the Company and Teijin Limited.
                      10.15+  Mechanical-Stress  Agreement  dated  November  30,
                              1995 between the Company and Teijin Limited.
                      11.1*   Statement regarding  Calculation of Shares Used in
                              Computing Net Loss Per Share.
                      21.1    List of Subsidiary.
                      23.1*   Consent of Arthur Andersen LLP.
                      27*     Financial Data Schedule.
                      99.1*   Preferred Shares Rights Agreement,  dated December
                              6, 1996,  between the Company  and  Registrar  and
                              Transfer  Company,  including the  Certificate  of
                              Determination, the Form of Rights Certificate, and
                              the summary of Rights attached thereto as Exhibits
                              A, B, and C, respectively.

                              * Filed herewith.
                              + Confidential treatment granted.

(b)     Reports on Form 8-K

         No reports on Form 8-K were filed  during the fourth  quarter of fiscal
1996.
<PAGE>

                                   SIGNATURES

         Pursuant to the  requirements  of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed on
its behalf by the undersigned, thereunto duly authorized.

EXOGEN, INC.


By:   /s/ Patrick A. McBrayer                                  December 20, 1996
      -----------------------
      Patrick A. McBrayer
      Chief Executive Officer, President, and Director




         Pursuant to the  requirements  of the Securities  Exchange Act of 1934,
this  report has been  signed  below by the  following  persons on behalf of the
registrant and in the capacities and on the dates indicated.

          Signature                                                 Date
          ---------                                                 ----
                                                      
By:   /s/ John P. Ryaby                                        December 20, 1996
      -----------------
      John P. Ryaby
      Chairman of the Board and Vice President of
      Research and Development and Regulatory Affairs

 
By:   /s/ Patrick A. McBrayer                                  December 20, 1996
      -----------------------
      Patrick A. McBrayer
      Chief Executive Officer, President, and Director
      (Principal Executive Officer)

 
By:   /s/ Richard H. Reisner                                   December 20, 1996
      ----------------------
      Richard H. Reisner 
      Vice President, Chief Financial Officer, and Secretary 
      (Principal Financial and Accounting Officer)


By:   /s/ Buzz Benson                                          December 20, 1996
      ---------------
      Buzz Benson 
      Director

 
By:   /s/ Donald J. Lothrop                                    December 20, 1996
      ---------------------
      Donald J. Lothrop 
      Director
<PAGE>
By:   /s/ David J. Ottensmeyer                                 December 20, 1996
      ------------------------
      David J. Ottensmeyer
      Director
 
By:   /s/ Terry J. Sullivan                                    December 20, 1996
      ---------------------
      Terry J. Sullivan
      Director
 
By:   /s/ Terence D. Wall                                      December 20, 1996
      -------------------
      Terence D. Wall 
      Director
<PAGE>
                                  EXOGEN, INC.

              INDEX TO FINANCIAL STATEMENTS AND FINANCIAL SCHEDULES


1. FINANCIAL STATEMENTS

           Report of Independent Public Accountants 

           Consolidated Balance Sheets as of September 30, 1996 and 1995 

           Consolidated Statements of Operations for the years ended
                September 30, 1996, 1995, and 1994 

           Consolidated Statement of Changes in Stockholders' Equity
                for the years ended September 30, 1996, 1995, and 1994 

           Consolidated Statements of Cash Flows for the years ended
                September 30, 1996, 1995, and 1994 

           Notes to Consolidated Financial Statements 


2. FINANCIAL STATEMENT SCHEDULES

           Schedule II--Valuation and Qualifying Accounts for the years ended
                September 30, 1996 and 1995 


<PAGE>
                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS


To Exogen, Inc.:

         We have audited the accompanying consolidated balance sheets of Exogen,
Inc. (a Delaware  corporation)  and subsidiary as of September 30, 1996 and 1995
and the related consolidated statements of operations,  changes in stockholders'
equity, and cash flows for each of the three years in the period ended September
30, 1996. These consolidated  financial  statements and the schedule referred to
below are the responsibility of the Company's management.  Our responsibility is
to express an opinion on these  financial  statements  and schedule based on our
audits.

         We conducted our audits in accordance with generally  accepted auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements.  An audit also includes
assessing the  accounting  principles  used and  significant  estimates  made by
management,  as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.

         In our opinion,  the  financial  statements  referred to above  present
fairly, in all material  respects,  the financial  position of Exogen,  Inc. and
subsidiary as of September 30, 1996 and 1995 and the results of their operations
and their cash flows for each of the three years in the period  ended  September
30, 1996 in conformity with generally accepted accounting principles.

         Our audits were made for the purpose of forming an opinion on the basic
financial  statements  taken as a whole.  The  schedule  listed  in the index to
financial  statements is presented for purposes of complying with the Securities
and  Exchange  Commission's  rules,  and is not  part  of  the  basic  financial
statements.  This schedule has been subjected to the auditing procedures applied
in the audit of the  basic  financial  statements,  and in our  opinion,  fairly
states in all material  respects  the  financial  data  required to be set forth
therein in relation to the basic financial statements taken as a whole.


                                                       /s/ARTHUR ANDERSEN LLP
                                                       ----------------------
                                                          Arthur Andersen LLP



New York, New York
November 13, 1996 (except for Note 15, as to
         which the date is December 6, 1996)

<PAGE>
<TABLE>
<CAPTION>
                                        EXOGEN, INC.

                                 CONSOLIDATED BALANCE SHEETS
                              (in thousands, except share data)


                                                                          September 30,
                                                                    -----------------------
                                                                        1996           1995
                                                                    --------       --------
                    ASSETS
<S>                                                                 <C>            <C>
Current assets:
    Cash and cash equivalents ................................      $  8,115       $ 22,176
    Short-term investments ...................................         6,824          6,704
    Accounts receivable, net of allowances of $346 and $198 in
         1996 and 1995, respectively .........................         2,943            871
    Inventories ..............................................         1,239          1,553
    Interest receivable ......................................           202             44
    Other current assets .....................................           344            234
                                                                    --------       --------
                 Total current assets ........................        19,667         31,582
Furniture, fixtures and equipment, net .......................           979            888
Long-term investments ........................................         4,595          2,181
Other assets .................................................           270            235
                                                                    --------       --------
                 Total assets ................................      $ 25,511       $ 34,886
                                                                    ========       ========

                    LIABILITIES AND STOCKHOLDERS' EQUITY

Current liabilities:
    Accounts payable .........................................      $    685       $    523
    Accrued liabilities ......................................         1,625            990
    Capital lease obligations ................................            15             15
    Other current liabilities ................................           107           --
                                                                    --------       --------
                 Total current liabilities ...................         2,432          1,528
Capital lease obligations ....................................             2             16

Commitments and contingencies (Note 11)
<PAGE>
<CAPTION>
<S>                                                                 <C>            <C>
Stockholders' equity:
    Preferred Stock, $0.0001 par value; 3,000,000 shares
         authorized in 1996 and 1995; no shares issued or
         outstanding .........................................          --             --
    Common Stock, $0.0001 par value; 27,000,000 shares
         authorized in 1996 and 1995; 9,909,192 shares issued
         and outstanding in 1996 and 9,850,259 shares issued
         and outstanding in 1995 .............................             1              1
    Additional paid-in capital ...............................        46,272         45,938
    Cumulative translation adjustment ........................           (22)           (11)
    Accumulated deficit ......................................       (23,174)       (12,586)
                                                                    --------       --------
                 Total stockholders' equity ..................        23,077         33,342
                                                                    --------       --------
                 Total liabilities and stockholders' equity ..      $ 25,511       $ 34,886
                                                                    ========       ========

The  accompanying  notes are an integral  part of these  consolidated  financial
statements.
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
                                       EXOGEN, INC.

                           CONSOLIDATED STATEMENTS OF OPERATIONS
                           (in thousands, except per share data)


                                                      For the years ended September 30,

                                                       1996           1995           1994
                                                   --------       --------       --------
<S>                                                <C>            <C>            <C>
Revenues:
     Product sales ..........................      $  5,777       $  1,852       $   --
     Revenues from development agreements ...         1,100           --             --
                                                   --------       --------       --------
          Total revenues ....................         6,877          1,852           --
                                                   --------       --------       --------

Operating costs and expenses:
     Cost of product sales ..................         3,661          1,128           --
     Research and development ...............         3,988          2,545          1,432
     Selling, general, and administrative ...        11,030          5,775          1,782
                                                   --------       --------       --------
           Total operating costs and expenses        18,679          9,448          3,214
                                                   --------       --------       --------

     Operating loss .........................       (11,802)        (7,596)        (3,214)

Other income (expense):
     Interest income (expense), net .........         1,438            604           (185)
     Other expense, net .....................          (224)           (59)            (2)
                                                   --------       --------       --------
           Total other income (expense) .....         1,214            545           (187)
                                                   --------       --------       --------

     Net loss ...............................      $(10,588)      $ (7,051)      $ (3,401)
                                                   ========       ========       ========

Net loss per share ..........................      $  (1.07)
                                                   ========

Weighted average shares outstanding .........         9,875

Pro forma net loss per share ................                     $  (0.93)      $  (0.48)
                                                                  ========       ========

Pro forma weighted average shares outstanding                        7,574          7,020


The  accompanying  notes are an integral  part of these  consolidated  financial
statements.

</TABLE>
<PAGE>
<TABLE>
<CAPTION>
                                                            EXOGEN, INC.

                                      CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY

                                       For the Years Ended September 30, 1996, 1995, and 1994
                                                           (in thousands)

                                                                           Additional      Cumulative
                                                      Common Stock           Paid-in       Translation      Accumulated
                                                  Shares       Amount        Capital       Adjustment        Deficit          Total
                                                  ------       ------        -------       ----------        -------          -----
<S>                                              <C>         <C>            <C>            <C>             <C>             <C>
Balance, October 1, 1993 ..............            925       $   --         $      4       $   --          $ (2,079)       $ (2,075)

   Amortization of Preferred
      Stock issuance costs ............           --             --             --             --               (20)            (20)
   Issuance of Common Stock ...........            460           --                9           --              --                 9
   Net loss ...........................           --             --             --             --            (3,401)         (3,401)
                                                 -----       ------         --------       ------          --------        --------

Balance, September 30,1994 ............          1,385           --               13           --            (5,500)         (5,487)

   Amortization of Preferred
      Stock issuance costs ............           --             --             --             --               (35)            (35)
   Issuance of Common Stock ...........          2,875           --           28,509           --              --            28,509
   Conversion of Preferred
      Stock to Common Stock ...........          5,590            1           17,416           --              --            17,417
   Translation adjustment .............           --             --             --            (11)             --               (11)
   Net loss ...........................           --             --             --             --            (7,051)         (7,051)
                                                 -----       ------         --------       ------          --------        --------

Balance, September 30, 1995 ...........          9,850            1           45,938          (11)          (12,586)         33,342

   Issuance of Common Stock ...........             39           --              245           --              --               245
   Exercise of stock options ..........             20           --               37           --              --                37
   Amortization of
      nonemployee stock
      option compensation .............           --             --               52           --              --                52
   Translation adjustment .............           --             --             --            (11)             --               (11)
   Net loss ...........................           --             --             --             --           (10,588)        (10,588)
                                                 -----       ------         --------       ------          --------        --------

Balance, September 30, 1996 ...........          9,909       $    1         $ 46,272       $  (22)         $(23,174)       $ 23,077
                                                 =====       ======         ========       ======          ========        ========


The  accompanying  notes are an integral  part of these  consolidated  financial
statements.
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
                                              EXOGEN, INC.

                                  CONSOLIDATED STATEMENTS OF CASH FLOWS
                                             (in thousands)

                                                                     For the years ended September 30,
                                                                   ------------------------------------
                                                                      1996           1995         1994
                                                                   --------      --------      --------
<S>                                                                <C>           <C>           <C>
Cash flows from operating activities:
     Net loss ................................................     $(10,588)      $(7,051)     $ (3,401)
     Adjustments to reconcile net loss to net cash used in
        operating activities:
          Depreciation and amortization ......................          330           186            57
          Amortization of net discount on short- and long-term
               investments ...................................         (196)          (75)         --
          Amortization of nonemployee stock
               option compensation ...........................           52          --            --
          Other adjustments ..................................           14            47            37
     Decrease (increase) in assets:
          Accounts receivable ................................       (2,081)         (871)         --
          Interest receivable ................................         (158)          (44)         --
          Inventories ........................................          311          (738)         (780)
          Other current assets ...............................         (131)         (148)          (30)
          Other assets .......................................          (46)         (188)          (11)
     Increase (decrease) in liabilities:
          Accounts payable ...................................          162            80           373
          Accrued liabilities ................................          637           577           364
          Notes payable ......................................         --            (380)         (250)
          Other current liabilities ..........................          107          --            --
                                                                   --------      --------      --------
               Net cash used in operating activities .........      (11,587)       (8,605)       (3,641)
                                                                   --------      --------      --------

Cash flows from investing activities:
     Purchase of short- and long-term investments ............      (20,868)      (16,310)         --
     Proceeds from sale of short- and long-term
       investments ...........................................       18,532         7,500          --
     Purchase of furniture, fixtures and equipment ...........         (411)         (916)         (129)
     Other investing activities ..............................            4            (4)            3
                                                                   --------      --------      --------
               Net cash used in investing activities .........       (2,743)       (9,730)         (126)
                                                                   --------      --------      --------

Cash flows from financing activities:
     Proceeds from Preferred Stock issuances, net of
       issuance expenses, and bridge financing ...............         --          11,379         4,224
     Proceeds from exercise of stock options .................           37          --            --
     Proceeds from sale of Common Stock, net of
       issuance expenses .....................................          245        28,508             9
     Principal payments under capital leases .................          (14)          (13)           (6)
                                                                   --------      --------      --------
               Net cash provided by financing activities .....          268        39,874         4,227
                                                                   --------      --------      --------
<PAGE>
<CAPTION>
                                              EXOGEN, INC.

                                  CONSOLIDATED STATEMENTS OF CASH FLOWS
                                             (in thousands)
                                              (continued)

                                                                     For the years ended September 30,
                                                                   ------------------------------------
                                                                      1996           1995         1994
                                                                   --------      --------      --------
<S>                                                                <C>           <C>           <C>

Effect of exchange rate changes on cash and cash
   equivalents ...............................................            1            (3)         --
                                                                   --------      --------      --------

Net (decrease) increase in cash and cash equivalents .........      (14,061)       21,536           460
Cash and cash equivalents, beginning of year .................       22,176           640           180
                                                                   --------      --------      --------
Cash and cash equivalents, end of year .......................     $  8,115      $ 22,176      $    640
                                                                   ========      ========      ========


The  accompanying  notes are an integral  part of these  consolidated  financial
statements.
</TABLE>
<PAGE>
                                  EXOGEN, INC.

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1.   Description of Business

         Exogen,  Inc ("Exogen" or the  "Company"),  incorporated in New York in
January 1992 and reincorporated in Delaware in February 1993, designs, develops,
manufactures,  and markets  medical  devices for the  non-invasive  treatment of
musculoskeletal  injury and disease.  The Company commenced  operations in March
1993.

         In  fiscal  1993  and  1994,  the  Company's  activities  consisted  of
acquiring  certain  assets  related to the Sonic  Accelerated  Fracture  Healing
System ("SAFHS")  ultrasound  technology (see Note 2), completing the Pre-Market
Approval ("PMA")  requirements of the United States Food and Drug Administration
("FDA")   relating  to  the  SAFHS   device,   and   establishing   an  internal
organizational  structure.  On October 5, 1994, the Company  received a PMA from
the FDA to commercially  distribute the Company's SAFHS device.  The majority of
primary  payors  for  significantly  all the  Company's  sales  are  third-party
insurers.  Changes in economic or other  conditions  could affect the ability of
these third-party payors to meet their obligations.

         In fiscal 1995, the Company  commenced  commercial  distribution of the
SAFHS   device  in  the  United   States,   continued  to  expand  the  internal
organizational  structure,  increased research and development  activities,  and
established  a wholly  owned  German  subsidiary.  In fiscal  1996,  the Company
further strengthened its domestic sales and marketing infrastructure,  continued
its  research  and  development   activities  of  the  SAFHS  device  and  other
technologies,  and  commenced  commercial  distribution  of the SAFHS  device in
certain European  countries.  The Company's product sales are generated entirely
from sales of the SAFHS  device,  and  therefore,  the Company is subject to the
risks associated with a single product.


2.   Acquisition of Ultrasound Technology and Patent

         On March 1, 1993, the Company  purchased  certain assets related to the
SAFHS  ultrasound  technology from Interpore  Orthopaedics,  Inc.  ("Interpore")
under the terms of an asset purchase agreement (the "Asset Purchase Agreement").
Concurrently,  the Company acquired a license to the initial  ultrasound  United
States patent for bone healing (the "Initial  Patent") under an agreement  dated
March 1, 1993 (the "License Agreement").

         Under  the terms of the  Asset  Purchase  Agreement,  the  Company  was
obligated to pay $600,000 for those  rights,  with  $100,000 paid at closing and
the balance  evidenced by a  noninterest-bearing  note  (discounted  at 9.0% per
annum).  The Company  prepaid  $120,000  of the note.  The balance of this note,
which was due within 10 days after  receipt of the  Company's  PMA for its SAFHS
device,  was  paid in  October  1994.  Under  the  terms of the  Asset  Purchase
Agreement,  the Company is also obligated to make royalty  payments to Interpore
based upon net revenues from sales of devices covered by the Initial Patent.
<PAGE>
                                  EXOGEN, INC.

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

         Under the terms of the License Agreement,  the Company was obligated to
pay $475,000 to the patent holder.  The Company paid $225,000 on the date of the
agreement.  The  remaining  $250,000 was payable,  together with interest at the
rate of 9% per annum,  in various  amounts over a 19-month  period,  which ended
October 1, 1994. On September 30, 1994, the Company made the final payment under
the terms of this agreement.  Accordingly,  the Company was assigned the subject
patent and the  assignment  was duly filed  with the  United  States  Patent and
Trademark Office.

         The Company  expensed the SAFHS  ultrasound  technology and the initial
patent on the date acquired in fiscal 1993.


3.   Significant Accounting Policies

     Consolidated Financial Statements

         The consolidated  financial  statements include the accounts of Exogen,
Inc. and its wholly owned subsidiary. These statements are prepared from records
maintained in the country in which the enterprise is located.  All  intercompany
transactions and balances are eliminated in consolidation.

         The Company  established a German subsidiary,  Exogen (Europe) GmbH, in
May 1995, and the subsidiary received final incorporation status in August 1995.
The subsidiary began distributing the SAFHS device in Europe in fiscal 1996.

     Translation of Foreign Currency

         All assets and  liabilities  of the Company's  foreign  operations  are
translated  to U.S.  dollars  at  year-end  exchange  rates,  while  the  income
statement is translated at average exchange rates in effect during the year, and
any adjustments are recorded as a component of stockholders' equity.

     Revenue Recognition and Cost of Sales

         Upon shipment of the SAFHS device,  the Company  records revenue net of
allowances  for  returns,  bad debt,  and amounts  that the  Company  believes a
respective third-party payor might deduct from the price of the SAFHS device.

         When revenue is recognized, the related costs are classified as cost of
sales.  The  cost  of  devices  shipped  in  connection  with  certain  clinical
prescriptions  for which  reimbursement  is currently  not available is recorded
either as sales and marketing expense or as research and development expense.

         Royalties on product revenues are included in cost of sales.
<PAGE>
                                  EXOGEN, INC.

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)


     Cash and Cash Equivalents and Investments

         The Company considers all highly liquid  investments  purchased with an
original  maturity of three months or less to be cash  equivalents.  Cash,  cash
equivalents, and investments consist of the following (in thousands):
<TABLE>
<CAPTION>
                                                                September 30,
                                                           ---------------------
                                                              1996          1995
                                                           -------       -------
<S>                                                        <C>           <C>
Cash and cash equivalents
     Cash ..........................................       $   145       $   111
     Money markets .................................           917        10,020
     Commercial paper ..............................         7,053        12,045
                                                           -------       -------
                                                             8,115        22,176        
Short-term investments
     Commercial paper ..............................          --           4,027
     U. S. Agency notes ............................         2,171          --
     Certificates of deposit .......................          --           1,700
     Corporate bonds ...............................         2,955          --
     Bank notes ....................................         1,502           977
     Other .........................................           196          --
                                                           -------       -------
                                                             6,824         6,704       
Long-term investments
     Bank notes ....................................          --             990
     U. S. Agency notes ............................         2,017          --
     Corporate bonds ...............................         2,578         1,191
                                                           -------       -------
                                                             4,595         2,181        

Total cash, cash equivalents, and investments.......       $19,534       $31,061
                                                           =======       =======

</TABLE>
         In May 1993, the Financial  Accounting Standards Board issued Statement
of Financial  Accounting  Standards No. 115, "Accounting for Certain Investments
in Debt and Equity  Securities." This Statement  requires the  classification of
debt and equity  securities  based on  whether  the  securities  will be held to
maturity,  are  considered  trading  securities,  or  are  available  for  sale.
Classification within these categories may require the securities to be reported
at their fair market value with  unrealized  gains and losses included either in
current earnings or reported as a separate component of stockholders' equity. As
of September 30, 1996 and 1995, all short-term  and long-term  investments  have
been classified as held to maturity.  These  investments are stated at amortized
cost,  which  approximates  market,  and  consist of  certificates  of  deposit,
commercial  paper,  U.S. Agency notes,  and corporate  bonds.  The maturities of
long-term investments range from October 1997 to September 1998.
<PAGE>
                                  EXOGEN, INC.

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

   Accounts Receivable

         Accounts  receivable  is recorded  net of  accumulated  allowances  for
returns,   bad  debt,  and  amounts  that  the  Company  believes  a  respective
third-party  payor  might  deduct  from the price of the SAFHS  device (see also
"Revenue  Recognition and Cost of Sales" discussed above).  Management is of the
opinion that there is no  significant  concentration  of credit risk in accounts
receivable.

   Inventories

         Inventories  are  stated at the lower of cost or market on a  first-in,
first-out basis.

   Furniture, Fixtures and Equipment

         Furniture, fixtures and equipment are recorded at cost. Depreciation is
computed  using the  straight-line  method  over the related  assets'  estimated
useful lives,  which range from two to five years.  Leasehold  improvements  are
recorded at cost,  and are  amortized  using the  straight-line  method over the
useful life of the asset or the lease term, whichever is shorter.

   Patent Costs

         Costs incurred relating to developing patents are expensed as incurred.

   Income Taxes

         Effective  October 1, 1993, the Company adopted  Statement of Financial
Accounting  Standards No. 109,  "Accounting  for Income  Taxes," which  requires
accounting  for  deferred  income  taxes under the asset and  liability  method.
Deferred  income  taxes are  recognized  for the tax  consequences  of temporary
differences by applying  enacted  statutory tax rates applicable in future years
to  differences  between the financial  statement  carrying  amounts and the tax
basis of existing assets and liabilities.

   Net Loss Per Common Share

         For the year ended September 30, 1996, net loss per share is determined
using the weighted average number of shares of Common Stock  outstanding  during
the period  presented.  The weighted  average  shares  outstanding is based upon
Accounting  Principles  Board  Opinion No. 15 ("APB 15"),  "Earnings per Share."
Options have been excluded because they are antidilutive.
<PAGE>
                                  EXOGEN, INC.

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

         For the year ended  September 30, 1995, pro forma net loss per share is
determined  using  the  weighted  average  number  of  shares  of  Common  Stock
outstanding during the period presented. The weighted average shares outstanding
is  based  upon  (i) APB 15 for the  periods  after  March  31,  1995  and  (ii)
Securities and Exchange  Commission Staff Accounting  Bulletin No. 83 ("SAB 83")
for the period October 1994 through March 1995,  which includes  Preferred Stock
as  outstanding  for the entire  year and  options  issued  during the 12 months
preceding  the  Initial  Public  Offering  at prices  below the  Initial  Public
Offering price as outstanding through March 31, 1995.

         For the year ended  September 30, 1994, pro forma net loss per share is
determined  using  the  weighted  average  number  of  shares  of  Common  Stock
outstanding  during  the  period  presented.  Pursuant  to SAB 83,  the Series B
Preferred  Stock and options  issued during the 12 months  preceding the Initial
Public  Offering (see Note 4) at prices below the Initial Public  Offering price
have been included in the Company's  loss per share  computation  for the period
presented as if the shares were  converted into Common Stock at the beginning of
that period, even though they were antidilutive. The Series A Preferred Stock is
included for the period  presented as if the shares were  converted  into Common
Stock at the  beginning  of that period.  Options  issued prior to the 12 months
preceding the Initial Public Offering are excluded as they are antidilutive.

         Historical  loss per share data for fiscal  1995 and 1994 have not been
presented as such information is not meaningful.

   Stock Options

         Accounting  for stock  options  issued  to  employees  and  nonemployee
directors is based upon the  "intrinsic  value"  method set forth in  Accounting
Principles  Board  Opinion No. 25 ("APB 25"),  "Accounting  for Stock  Issued to
Employees."  Accounting  for  stock  options  issued  to  nonemployees  prior to
December 16, 1995 is also based upon APB 25. Accounting for stock options issued
to nonemployees  (excluding  nonemployee  directors)  after December 15, 1995 is
based  upon the  "fair  value"  method  set  forth  in  Statement  of  Financial
Accounting   Standards  No.  123  ("SFAS  123"),   "Accounting  for  Stock-Based
Compensation."  See "Recent  Pronouncements"  below for a further  discussion of
SFAS 123.

   Management's Use of Significant Estimates

         The  preparation of financial  statements in conformity  with generally
accepted  accounting  principles  requires  management  to  make  estimates  and
assumptions  that affect the reported  amounts of assets and  liabilities at the
date of the  financial  statements  and the  reported  amounts of  revenues  and
expenses during the reported period.  Specifically,  the accounts receivable and
revenue of the Company have been  reduced by an  estimated  reserve for returns,
disallowed  amounts,  and bad debts.  Actual  results  could  differ  from those
estimates.  Also, the Company's  inventory consists primarily of high-technology
finished goods subject to management's  estimates as to the need of reserves for
obsolescence.
<PAGE>
                                  EXOGEN, INC.

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

   Recent Pronouncements

         In  March  1995,  the  Financial   Accounting  Standards  Board  issued
Statement of Financial  Accounting  Standards No. 121 ("SFAS 121"),  "Accounting
for the Impairment of Long-Lived Assets and for Long-Lived Assets to be Disposed
of," which is effective for the Company's  1997 financial  statements.  SFAS 121
requires that long-lived assets and certain identifiable  intangible assets held
and used by a company be reviewed for impairment  whenever  events or changes in
circumstances  indicate  that the  carrying  amounts of the assets  might not be
recoverable.  The Company has  determined  that,  as of September  30, 1996,  no
assets covered by SFAS 121 have been impaired.

         In October 1995, the Financial  Accounting  Standards Board issued SFAS
123, which is effective for the Company's 1997  financial  statements.  SFAS 123
allows  companies to account for  stock-based  compensation  to employees  under
either (i) the new  provisions of SFAS 123 or (ii) the provisions of APB 25 with
pro forma  disclosure  in the  footnotes to the  financial  statements as if the
measurement  provisions of SFAS 123 had been adopted.  At this time, the Company
intends to continue accounting for its stock-based  compensation to employees in
accordance with the provisions of APB 25.

         In accounting for options issued to nonemployees, the implementation of
SFAS  123 did not  materially  impact  the  financial  position  or  results  of
operations of the Company, and had no effect on its cash flows.

   Reclassification

         Certain prior year amounts have been  reclassified  to conform with the
current year's presentation.


4.   Initial Public Offering

         On July 25, 1995,  the Company  completed its Initial  Public  Offering
("IPO") of 2,500,000  shares of Common  Stock at a purchase  price of $11.00 per
share, for aggregate net proceeds of approximately  $24.7 million. On August 15,
1995,  the  underwriters  of the IPO purchased an additional  375,000  shares of
Common Stock, pursuant to the over-allotment  option, for aggregate net proceeds
of approximately $3.8 million.

<PAGE>
                                  EXOGEN, INC.

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

5.   Geographic Segment Information

         The Company began operations  outside the United States by establishing
a German  subsidiary,  Exogen (Europe) GmbH, in May 1995. For 1996 and 1995, net
revenues,  operating loss, and identifiable  assets pertaining to the geographic
areas in which the Company operates are as follows (in thousands):
<TABLE>
<CAPTION>
                                                              September 30,
                                                     ---------------------------
                                                         1996              1995
                                                         ----              ----
<S>                                                  <C>               <C>
Net revenues:
     United States .........................         $  7,284          $  2,035
     Europe ................................              787              --
     Intercompany eliminations .............           (1,194)             (183)
Operating loss:
     United States .........................           10,813             7,366
     Europe ................................              919               230
     Intercompany eliminations .............               70              --
Identifiable assets:
     United States .........................           24,449            34,813
     Europe ................................            1,062                73
</TABLE>
         Transfers between geographic areas represent  intercompany export sales
of  U.S.A.-produced  goods,  and are  accounted for based on  established  sales
prices  between the  related  companies.  In  computing  operating  loss for the
foreign  subsidiary,  no allocations of general  corporate  expenses or interest
have been made. Identifiable assets of the foreign subsidiary directly relate to
its operations. United States assets consist of all other assets of the Company.


6.   Development Agreement Revenues

         In fiscal 1996, the Company  recorded  revenues of $1.1 million related
to development  agreements with Teijin Limited, a Japanese corporation.  No such
revenues were reported for fiscal 1995. These  development  agreements cover two
of  the   Company's   technologies:   (a)   the   SAFHS   device   and  (b)  the
mechanical-stress  device  under  development  to treat  the  loss of bone  mass
associated with  osteoporosis.  The SAFHS agreement  provides for  nonrefundable
milestone  payments to the Company for Teijin's  development  of the product for
launch in Japan. The Company will manufacture and supply SAFHS devices to Teijin
for clinical  trials and subsequent  sales in Japan.  Teijin will be responsible
for complying with the regulatory  requirements  and marketing and  distributing
the  SAFHS  device  in  Japan.  The  mechanical-stress  agreement  provides  for
nonrefundable  milestone payments to the Company that will support, in part, the
Company's clinical trials in the United States in exchange for a first option in
favor of Teijin to negotiate a development and  distribution  agreement for this
device for the Japanese market.
<PAGE>
                                  EXOGEN, INC.

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

7.   Inventories

         Inventories consist of the following (in thousands):

<TABLE>
<CAPTION>
                                                              September 30,
                                                       -------------------------
                                                         1996               1995
                                                       ------             ------
<S>                                                    <C>                <C>  
Finished goods ...........................             $  768             $1,258
Parts and components .....................                471                295
                                                       ------             ------
                                                       $1,239             $1,553
                                                       ======             ======

</TABLE>

8.   Furniture, Fixtures and Equipment

         Furniture,   fixtures  and  equipment  consist  of  the  following  (in
thousands):
<TABLE>
<CAPTION>

                                                              September 30,
                                                         ----------------------
                                                            1996           1995
                                                         -------        -------
<S>                                                      <C>            <C>
Furniture, fixtures and equipment ................       $ 1,421        $ 1,024
Leasehold improvements ...........................            71             58
                                                         -------        -------
                                                           1,492          1,082
Accumulated depreciation and amortization ........          (513)          (194)
                                                         -------        -------
                                                         $   979        $   888
                                                         =======        =======
</TABLE>

         Depreciation  and  amortization  expense was  $319,000,  $176,000,  and
$50,000, for the years ended September 30, 1996, 1995, and 1994, respectively.
<PAGE>
                                  EXOGEN, INC.

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)


9.   Accrued Liabilities

         Accrued liabilities consist of the following (in thousands):

<TABLE>
<CAPTION>
                                                               September 30,
                                                        ------------------------
                                                          1996              1995
                                                        ------            ------
<S>                                                     <C>               <C>
                                                                                                
Compensation and benefits ..................            $  490            $  207
Taxes other than income ....................               241                59
Warranty expenses ..........................               157                70
Research and development ...................               136                36
IPO costs ..................................              --                 160
Other ......................................               601               458
                                                        ------            ------
                                                        $1,625            $  990
                                                        ======            ======

</TABLE>

10.   Redeemable Preferred Stock

         In March 1993, the Company entered into a Stock Purchase  Agreement for
the sale of an  aggregate  of  7,500,000  of its  authorized  shares of Series A
Preferred Stock issuable in two tranches at a purchase price of $1.00 per share.
The first tranche of 1,846,154  shares of Series A Preferred Stock was issued in
March 1993,  and was  convertible  into an aggregate of 923,073 shares of Common
Stock at an  as-converted  price of $2.00  per  share.  The  second  tranche  of
5,653,846 shares of Series A Preferred  Stock,  issuance of which was contingent
upon  receipt of the  Company's  PMA for its SAFHS  device  (which  occurred  in
October 1994), was issued in October 1994, and was convertible into an aggregate
of 2,826,918 shares of Common Stock at an as-converted price of $2.00 per share.
Of the second tranche,  753,846  Preferred  shares were issued in August 1994 at
the election of a certain stockholder.

         Shares of Redeemable  Preferred Stock outstanding at September 30, 1994
were 2,600,000.

         In November 1994, the Company  entered into a Stock Purchase  Agreement
for the sale of an aggregate of 3,680,303 of its  authorized  shares of Series B
Preferred  Stock at a  purchase  price of  $2.75,  which was  converted  into an
aggregate of 1,840,145 shares of Common Stock at an as-converted  price of $5.50
per share.
<PAGE>
                                  EXOGEN, INC.

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

         On July 25, 1995,  concurrent with the completion of the Company's IPO,
11,180,303  shares of Redeemable  Preferred  Stock were converted into 5,590,136
shares of Common Stock.

11.   Commitments and Contingencies

         The Company  leases a facility  in  Piscataway,  New Jersey;  the lease
commenced  May 1995 and has a remaining  term of five  years.  The length of the
lease is subject to  adjustment,  under  certain  conditions,  as defined in the
lease agreement.

         The approximate  minimum annual rentals for the  above-mentioned  lease
are as follows (in thousands):
<TABLE>
<CAPTION>

                                                               Operating Lease
                                                               ---------------
               <S>                                              <C>
               1997............................................ $    499
               1998............................................      506
               1999............................................      513
               2000............................................      520
               2001............................................      527
                                                                -------- 
                                                                $  2,565
                                                                ========
</TABLE>

               Rent expense was  $353,000,  $233,000,  and $83,000 for the years
ended September 30, 1996, 1995, and 1994, respectively.

               The  Company  is also  committed  to pay  royalties  on  sales of
certain of its  products.  Royalty  expense in fiscal 1996 and 1995 was $346,000
and $112,000, respectively.

               The  Company's  SAFHS device is currently  produced by a contract
manufacturer.  The  agreement  between  the  Company  and this  manufacturer  is
documented by specific purchase orders,  effective to 1998, covering anticipated
requirements.   At  September  30,  1996,  these  purchase  orders  amounted  to
commitments of approximately $3 million.  A change of the contract  manufacturer
could cause a delay in manufacturing  and a possible loss of sales,  which could
affect operating results adversely.

               In March 1996, the Company settled a legal action brought against
the Company on March 15, 1995 by a former sales  representative  of the Company.
The settlement  was recorded in Other expense,  net. (See Part I, Item 3, "Legal
Proceedings," for a further discussion.) Also in fiscal 1995, the Company became
a party to a certain other lawsuit that  continued  through  fiscal 1996 and has
not been settled.  Management is of the opinion that this other lawsuit will not
have a material adverse effect on the Company's financial position,  its results
of operations, or its cash flows.
<PAGE>
                                  EXOGEN, INC.

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

12.   Stock Option Plans and Stockholders' Equity

   Stock Option and Stock Option/Stock Issuance Plans

               The Company  adopted the 1993 Stock Option Plan (the "1993 Plan")
for the purpose of attracting  and retaining the services of selected  employees
(including  officers  and  directors)  and  consultants.  The Plan  provides for
options designated as either nonqualified or incentive stock options with a term
of no more than 10 years.  Effective  with the IPO, the 1993 Plan was superseded
by the 1995 Stock  Option/Stock  Issuance  Plan (the "1995  Plan"),  and options
outstanding under the 1993 Plan were incorporated into the 1995 Plan.

               The Company's 1995 Stock  Option/Stock  Issuance Plan was adopted
by the  Board  of  Directors  and  stockholders  as of May 25,  1995  and is the
successor equity incentive  program to the Company's 1993 Stock Option Plan (the
"Predecessor  Plan").  The 1995 Plan became  effective  with the IPO. A total of
750,000  shares of Common Stock has been  authorized for issuance under the 1995
Plan. This share reserve is comprised of (i) the shares that remained  available
for  issuance  under the  Predecessor  Plan,  including  the  shares  subject to
outstanding options  thereunder,  plus (ii) an increase of 500,000 shares. In no
event may any one participant in the 1995 Plan receive option grants, separately
exercisable stock  appreciation  rights, or direct stock issuances for more than
300,000 shares in any calendar year.

         The  1995  Plan is  divided  into  four  separate  components:  (i) the
Discretionary Option Grant Program under which employees,  nonemployee directors
(other than the members of the Compensation Committee),  and consultants may, at
the discretion of the plan administrator,  be granted options to purchase shares
of Common  Stock at an exercise  price of not less than the fair market value of
the Common Stock on the grant date,  and under which stock  appreciation  rights
may be issued that will allow the holders to surrender their outstanding options
for an  appreciation  distribution,  in cash or Common Stock,  from the Company,
(ii) the Stock  Issuance  Program  under  which such  persons  may,  in the plan
administrator's  discretion, be issued shares of Common Stock directly,  through
the  purchase of such  shares at a price not less than the fair market  value of
the Common  Stock at the time of issuance or as a bonus tied to the  performance
of  services,  (iii) the Salary  Investment  Option  Grant  Program  under which
selected  officers and other key executives may elect to have a portion of their
base salaries applied each year to the acquisition of options to purchase shares
of Common Stock at an aggregate  discount  from the then fair market value equal
to their salaries' investment, and (iv) the Automatic Option Grant Program under
which option grants will automatically be made at periodic intervals to eligible
nonemployee  directors to purchase  shares of Common Stock at an exercise  price
equal to 100% of the fair market value of the Common Stock on the grant date.
<PAGE>
                                  EXOGEN, INC.

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

         Under the Automatic  Option Grant Program,  each  nonemployee  director
first elected or appointed to the Board of Directors after the effective date of
the 1995 Plan will automatically be granted an option for 7,500 shares of Common
Stock  on the  date  of his or her  election  or  appointment  to the  Board  of
Directors,  provided  such  individual  has not been in the prior  employ of the
Company. In addition,  at each annual stockholders'  meeting held after the IPO,
each  individual  with at least six months of service on the Board of  Directors
who will continue to serve as a nonemployee  director following the meeting will
automatically be granted an option for 1,250 shares of Common Stock,  whether or
not such  individual  has been in the prior  employ of the Company or has joined
the Board of Directors prior to the IPO.

               The 1995 Plan will  terminate  on April 30, 2005,  unless  sooner
terminated by the Board of Directors.

               Stock  option  activity  pursuant  to the 1993 and 1995  Plans is
summarized as follows:
<TABLE>
<CAPTION>

                                                  Number of            Option
                                                   Options          Price Range
                                                   -------          -----------
<S>                                               <C>             <C>
Balance at September 30, 1993
     Granted ............................          55,000         $        0.02
                                                  -------                  
Balance at September 30, 1994 ...........          55,000         $        0.02
     Granted ............................         296,450         $ 0.60-$13.00
     Exercised ..........................             125         $        0.02
     Canceled ...........................           2,025         $ 0.02- $5.50
                                                  -------                 
Balance at September 30, 1995 ...........         349,300         $ 0.02-$13.00
     Granted ............................         173,250         $ 8.00-$25.50
     Exercised ..........................          19,989         $ 0.02-$10.00
     Canceled ...........................          12,524         $ 0.02-$18.50
                                                  -------                  
Balance at September 30, 1996 ...........         490,037         $ 0.02-$25.50
  (80,167 shares exercisable)                     =======
</TABLE>

           Options  generally become  exercisable in ratable  installments  over
four- or five-year periods.

           In the opinion of management,  options were issued at the fair market
value  of the  Company's  Common  Stock on the date of  grant.  Accordingly,  no
compensation expense has been recorded for those options accounted for under APB
25. During fiscal 1996,  55,875 options were issued to  nonemployees  (excluding
nonemployee  directors),  and were  accounted  for under SFAS 123.  Accordingly,
$52,000 in  compensation  expense  associated with these options was recorded in
fiscal 1996.
<PAGE>
                                  EXOGEN, INC.

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

           There were no direct issuances of Common Stock or stock  appreciation
rights under the 1995 Plan as of September 30, 1996.

   Employee Stock Purchase Plan

           The Company's  Employee Stock Purchase Plan (the "Purchase Plan") was
adopted by the Board of  Directors  and  stockholders  as of May 25,  1995.  The
Purchase  Plan is  designed  to allow  eligible  employees  of the  Company  and
participating  subsidiaries  to purchase  shares of Common Stock, at semi-annual
intervals,  through  periodic payroll  deductions.  A total of 150,000 shares of
Common Stock has been reserved for issuance under the Purchase Plan.

           The  Purchase  Plan will be  implemented  in a series  of  successive
offering periods;  each offering period (other than the initial offering period)
will have a maximum  duration of 24 months.  The initial offering period started
upon the IPO and will end on the last business day in July 1997.

           Payroll deductions may not exceed 10% of the participant's total cash
earnings  in each  semi-annual  period.  The  purchase  price per share  will be
eighty-five  percent  (85%) of the  lower of (i) the  fair  market  value of the
Common Stock on the  participant's  entry date into the offering  period or (ii)
the fair market value on the semi-annual  purchase date.  However, no individual
may purchase Common Stock under the Purchase Plan at a rate in excess of $25,000
worth of  Common  Stock  (valued  as of the  participant's  entry  date into the
offering period) for each calendar year (or portion thereof) his or her purchase
rights remain outstanding.

           The Purchase  Plan will  terminate  upon the earliest of (i) the last
business  day in July  2005,  (ii) the date on which all  shares  available  for
issuance  under the  Purchase  Plan have been sold  pursuant to purchase  rights
exercised  under the  Purchase  Plan,  or (iii)  the date on which all  purchase
rights are exercised in connection with a Corporate Transaction.

           Stock issued through September 30, 1996 pursuant to the Purchase Plan
totaled 38,944 shares at prices ranging from $5.21 to $9.35.

   Restricted Stock Agreements

           All holders of Common Stock issued prior to the IPO have entered into
restricted stock purchase agreements that grant certain repurchase rights to the
Company upon the sale, assignment,  transfer,  encumbrance, or other disposition
of the Company's  shares or upon  termination  of service with the Company.  The
repurchase  rights  terminate  over time with  respect  to any and all shares in
which the  purchaser's  interest has vested.  Of the Common  Stock  outstanding,
1,060,836  and  785,840  shares are vested as of  September  30,  1996 and 1995,
respectively.  The unvested  324,162  shares at September 30, 1996 vest over the
next 17 months.
<PAGE>
                                  EXOGEN, INC.

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)

13.  Income Taxes

         As a result of the losses  generated,  the Company has no provision for
income taxes.  The Company has recorded a full valuation  allowance  against its
deferred  tax  assets as  realizability  of such  asset is  predicated  upon the
Company's  achieving   profitability.   Upon  adopting  Statement  of  Financial
Accounting  Standards No. 109 on October 1, 1993,  the  valuation  allowance was
$825,000.  The change in valuation  allowance  during 1996,  1995,  and 1994 was
$3,433,000, $2,813,000, and $1,358,000, respectively.

           The types of  temporary  differences  between the tax bases of assets
and  liabilities  and their  financial  reporting  amounts that give rise to the
deferred  tax  asset  and their  approximate  tax  effects  are as  follows  (in
thousands):
<TABLE>
<CAPTION>

                                                                       September 30,          September 30,
                                                                       -------------          -------------
                                                                            1996                   1995
                                                                         -------                -------
<S>                                                                      <C>                    <C>
Deferred Tax Asset:
    Start-up costs ...............................................       $   732                $ 1,000
    Research and development costs ...............................           548                    518
    Research and development and related patent acquired .........           184                    247
    Vacation accrual .............................................            18                     20
    Allowances for returns, disallowances, and bad debts .........           555                    253
    Net operating loss ...........................................         6,311                  2,960
    Other ........................................................           126                     (2)
                                                                         -------                -------
    Deferred tax asset ...........................................         8,474                  4,996

Less: Valuation Allowance ........................................        (8,474)                (4,996)
                                                                         -------                -------
                                                                         $     0                $     0
                                                                         =======                =======
</TABLE>
         At September 30, 1996, the Company has net operating loss carryforwards
for United States  federal income tax purposes of  approximately  $14.3 million.
These net operating loss carryforwards expire on various dates through 2010. The
Company's ability to utilize its net operating loss  carryforwards is subject to
annual limitations in future periods pursuant to the "change in ownership rules"
under Section 382 of the Internal  Revenue  Code,  as amended.  At September 30,
1996,  the Company also has net operating loss  carryforwards  for German income
tax purposes of $1.2 million, which are not subject to any limitations.
<PAGE>
                                  EXOGEN, INC.

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)


14.  Supplemental Disclosure of Cash Flow Information

         Cash paid for interest  was $9,000,  $169,000,  and  $49,000,  in 1996,
1995, and 1994, respectively.

         The Company recorded $0, $35,000,  and $20,000 of amortization  related
to Preferred Stock issuance costs in 1996, 1995, and 1994, respectively.


15.  Subsequent Event

   The Stockholder Rights Plan

         The Company's Second Amended and Restated Certificate of Incorporation,
dated July 25, 1995,  grants the Board of Directors the authority to issue up to
3,000,000 shares of preferred stock of the Company,  $0.0001 par value per share
(the  "Preferred  Stock"),  in one  or  more  series  and  to  fix  the  rights,
preferences,  privileges,  and restrictions thereof,  including dividend rights,
dividend  rates,   conversion  rights,   voting  rights,  terms  of  redemption,
redemption   prices,   liquidation   preferences,   and  the  number  of  shares
constituting any series or the designation of such series,  without further vote
or action by the stockholders.

         Effective  December  6, 1996,  pursuant to a  Preferred  Shares  Rights
Agreement  (the  "Rights  Agreement")  between  the Company  and  Registrar  and
Transfer Company,  as Rights Agent (the "Rights Agent"),  the Company's Board of
Directors  declared  a  dividend  of one  right  (a  "Right")  to  purchase  one
one-hundredth  share of the Company's  Series A  Participating  Preferred  Stock
("Series  A  Preferred")  for  each  outstanding  share of  Common  Stock of the
Company.  The dividend is payable on December  19, 1996 (the  "Record  Date") to
stockholders  of record as of the close of  business  on that  date.  Each Right
entitles the registered holder to purchase from the Company one one-hundredth of
a share of Series A  Preferred  at an exercise  price of $30.00  (the  "Purchase
Price"),  subject to adjustment in the event the Company  declares a dividend on
the Common Stock payable in Common Stock,  subdivides  the number of outstanding
shares of Common  Stock into a larger  number of such  shares,  or combines  the
number  of  outstanding  shares of Common  Stock  into a smaller  number of such
shares,  among other  circumstances.  In addition,  under certain  circumstances
described more fully in the Rights Agreement,  the Rights may become exercisable
for a number of shares of  Common  Stock  having a value  equal to two times the
Purchase Price.

         The Rights will expire December 19, 2006, which should give the Company
adequate  time to determine  whether any further  protection  is  required.  The
Rights may be redeemed by the Company at the direction of the Board of Directors
at one cent per Right prior to 10 business days after the accumulation,  through
open-market  purchases,  a tender  offer,  or  otherwise,  of 15% or more of the
combined number of the Company's  shares of Common Stock by a single acquirer or
group,  and  thereafter in certain  circumstances.  Thus,  the Rights should not
interfere  with any  merger or  business  combination  approved  by the Board of
Directors prior to that time.
<PAGE>
<TABLE>
<CAPTION>
                                  EXOGEN, INC.

                 SCHEDULE II--VALUATION AND QUALIFYING ACCOUNTS
                                 (in thousands)



                                                                     Additions
                                                               --------------------------
                                                 Balance at    Charged to      Charged to                       Balance
                                                 Beginning     Costs and        Other                           at End
             Description                         of Period     Expenses        Accounts        Deductions      of Period
             -----------                         ---------     --------        --------        ----------      ---------
<S>                                               <C>           <C>           <C>             <C>              <C> 
Year ended September 30, 1995

Allowance for returns, bad
debt, and price deductions
by third-party payors ....................        $ --          $  352        $    --         $  154 (a)       $  198

Year ended September 30, 1996

Allowance for returns, bad
debt, and price deductions
by third-party payors ....................        $  198        $1,667        $    --         $ 1,519 (a)      $  346



(a) Returns and write-offs.
</TABLE>
<PAGE>
                                  EXOGEN, INC.

                                  EXHIBIT INDEX

              Number                           Description 
              ------                           ----------- 
                                                         
               3.1       Second    Amended   and   Restated    Certificate    of
                         Incorporation of the Company. Incorporated by reference
                         to Exhibit 3.1 to the Company's Form 10-Q for the third
                         quarter ending June 30, 1995.
               3.2       Amended   and   Restated   Bylaws   of   the   Company.
                         Incorporated   by  reference  to  Exhibit  3.3  to  the
                         Company's Form S-1 Registration Statement (Registration
                         No. 33-92740).
               4.1       See  Exhibits  3.1  and  3.2  for   provisions  of  the
                         Certificate of Incorporation  and Bylaws of the Company
                         defining  rights  of  holders  of  Common  Stock of the
                         Company.
               10.1      Amended and Restated  Investors' Rights Agreement dated
                         as  of  November  14,  1994  among  the  Company,   the
                         investors  listed  on  Schedule  A  thereto,   and  the
                         individuals listed on Schedule B thereto.  Incorporated
                         by reference to Exhibit 10.1 to the Company's  Form S-1
                         Registration Statement (Registration No. 33-92740).
               10.2      Asset  Purchase  Agreement  dated as of  March 1,  1993
                         among  Applied  Epigenetics,  Inc.  ("AEI"),  Interpore
                         International,  Inc. and Interpore  Orthopaedics,  Inc.
                         Incorporated  by  reference  to  Exhibit  10.2  to  the
                         Company's Form S-1 Registration Statement (Registration
                         No. 33-92740).
               10.3      Employment Agreement dated January 15, 1994 between the
                         Company  and  Patrick  A.  McBrayer.   Incorporated  by
                         reference  to Exhibit  10.3 to the  Company's  Form S-1
                         Registration Statement (Registration No. 33-92740).
               10.4      Employment Agreement dated February 3, 1994 between the
                         Company and John Bohan.  Incorporated  by  reference to
                         Exhibit  10.4 to the  Company's  Form S-1  Registration
                         Statement (Registration No. 33-92740).
               10.5      Form of Consulting  Agreements  between the Company and
                         each of Drs. McLeod and Rubin, as amended. Incorporated
                         by reference to Exhibit 10.5 to the Company's  Form S-1
                         Registration Statement (Registration No. 33-92740).
               10.6      Form of Stock Restriction Agreement between the Company
                         and each of Drs. McLeod and Rubin and Messrs.  Reisner,
                         Ryaby,  Talish,  McBrayer,  and Bohan.  Incorporated by
                         reference  to Exhibit  10.6 to the  Company's  Form S-1
                         Registration Statement (Registration No. 33-92740).
               10.7      Form of Stock  Purchase  Agreement  between the Company
                         and  each  of  Messrs.   Reisner,  Ryaby,  and  Talish.
                         Incorporated  by  reference  to  Exhibit  10.7  to  the
                         Company's Form S-1 Registration Statement (Registration
                         No. 33-92740).
               10.8+     Manufacturing  Agreement dated January 20, 1994 between
                         the Company and Hi-Tronics Designs,  Inc.  Incorporated
                         by reference to Exhibit 10.8 to the Company's  Form S-1
                         Registration Statement (Registration No. 33-92740).
<PAGE>
               10.9      Form  of  1993  Stock  Option  Plan  Option  Agreement.
                         Incorporated  by  reference  to  Exhibit  10.9  to  the
                         Company's Form S-1 Registration Statement (Registration
                         No. 33-92740).
               10.10     1995 Stock Option / Stock Issuance  Plan.  Incorporated
                         by reference to Exhibit 10.10 to the Company's Form S-1
                         Registration Statement (Registration No. 33-92740).
               10.11     Employee Stock Purchase Plan. Incorporated by reference
                         to Exhibit 10.12 to the Company's Form S-1 Registration
                         Statement (Registration No. 33-92740).
               10.12     Lease  Agreement dated December 13, 1994 by and between
                         the   Company  and  Siemens   Medical   Systems,   Inc.
                         Incorporated  by  reference  to  Exhibit  10.13  to the
                         Company's Form S-1 Registration Statement (Registration
                         No. 33-92740).
               10.13     License  Agreement dated March 26, 1992 between AEI and
                         Drs.  McLeod and Rubin.  Incorporated  by  reference to
                         Exhibit  10.14 to the Company's  Form S-1  Registration
                         Statement (Registration No. 33-92740).
               10.14     SAFHS  Agreement  dated  November  30, 1995 between the
                         Company and Teijin  Limited.  Incorporated by reference
                         to  Exhibit  10.14 to the  Company's  Form 10-K for the
                         year ending September 30, 1995.
               10.15+    Mechanical-Stress  Agreement  dated  November  30, 1995
                         between the Company and Teijin Limited. Incorporated by
                         reference to Exhibit 10.15 to the  Company's  Form 10-K
                         for the year ending September 30, 1995.
               11.1*     Statement  regarding  Calculation  of  Shares  Used  in
                         Computing Net Loss Per Share.
               21.1      List  of  Subsidiary.   Incorporated  by  reference  to
                         Exhibit  21.1 to the  Company's  Form 10-K for the year
                         ending September 30, 1995.
               23.1*     Consent  of  Arthur   Andersen  LLP.   Incorporated  by
                         reference  to Exhibit 23.1 to the  Company's  Form 10-K
                         for the year ending September 30, 1995.
               27*       Financial Data Schedule.
               99.1*     Preferred  Shares Rights  Agreement,  dated December 6,
                         1996,  between the Company and  Registrar  and Transfer
                         Company,  including the  Certificate of  Determination,
                         the Form of  Rights  Certificate,  and the  summary  of
                         Rights  attached  thereto  as  Exhibits  A,  B,  and C,
                         respectively.
               -----------------------
                           * Filed herewith.
                           + Confidential treatment granted.



<TABLE>
<CAPTION>
                                                                    Exhibit 11.1


                                                EXOGEN, INC.

                                             EARNINGS PER SHARE
                                   CALCULATION OF SHARES USED IN COMPUTING
                                             NET LOSS PER SHARE
                                    (in thousands, except per share data)


                                                                         For the years ended September 30,    
                                                                      ------------------------------------- 
                                                                         1996          1995           1994
                                                                      --------      --------      ---------   
<S>                                                                   <C>           <C>           <C>
Net loss ........................................................     $(10,588)     $ (7,051)     $  (3,401)
                                                                      ========      ========      =========


Net loss per share 
- ------------------ 
Weighted average shares outstanding:
Common Stock ....................................................        9,875
                                                                      -------- 
     Total ......................................................        9,875
                                                                      ======== 

Net loss per share ..............................................     $  (1.07)
                                                                      =========


Pro forma net loss per share
- ----------------------------
Weighted average shares outstanding:
Common Stock ....................................................                      7,489          1,261
Redeemable Preferred Stock:
     Series A ...................................................                         --          3,750
     Series B ...................................................                         --          1,840
Stock options ...................................................                         85            169
                                                                                    --------      ---------
     Total ......................................................                      7,574          7,020
                                                                                    ========      =========


Pro forma net loss per share ....................................                   $  (0.93)     $   (0.48)
                                                                                    ========      =========


</TABLE>

                                                                    Exhibit 23.1



                             CONSENT OF INDEPENDENT
                               PUBLIC ACCOUNTANTS



         As   independent   public   accountants,   we  hereby  consent  to  the
incorporation  of our  report  included  in this Form  10-K  into the  Company's
previously filed Registration Statement File No. 33-94750.




                                                        /s/ARTHUR ANDERSEN LLP
                                                        ----------------------
                                                           Arthur Andersen LLP


New York, New York
December 20, 1996

<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
In thousands, except share data at 9/30/96 or 12 months ended 9/30/96.
</LEGEND>
<MULTIPLIER>   1,000
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          SEP-30-1996
<PERIOD-END>                               SEP-30-1996
<CASH>                                           8,115
<SECURITIES>                                     6,824
<RECEIVABLES>                                    3,289
<ALLOWANCES>                                       346
<INVENTORY>                                      1,239
<CURRENT-ASSETS>                                19,667
<PP&E>                                           1,492
<DEPRECIATION>                                     513
<TOTAL-ASSETS>                                  25,511
<CURRENT-LIABILITIES>                            2,432
<BONDS>                                              2
                                0
                                          0
<COMMON>                                             1
<OTHER-SE>                                      23,076
<TOTAL-LIABILITY-AND-EQUITY>                    25,511
<SALES>                                          5,777
<TOTAL-REVENUES>                                 6,877
<CGS>                                            3,661
<TOTAL-COSTS>                                    3,661
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   9
<INCOME-PRETAX>                               (10,588)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                           (10,588)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                  (10,588)
<EPS-PRIMARY>                                   (1.07)
<EPS-DILUTED>                                        0
        

</TABLE>

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549


                               -------------------

                                    FORM 8-A

                               -------------------



                FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES
                     PURSUANT TO SECTION 12(b) OR (g) OF THE
                         SECURITIES EXCHANGE ACT OF 1934




                                  EXOGEN, INC.
             (Exact name of Registrant as specified in its charter)


       Delaware                                            77-223208468
(State of incorporation                        (IRS Employer Identification No.)
or organization) 


                             10 Constitution Avenue
                                  P.O. Box 6860
                          Piscataway, New Jersey 08855
               (Address of principal executive offices) (Zip Code)

                               -------------------

        Securities to be registered pursuant to Section 12(b) of the Act: 


                    Title of each class to be so registered
                                      None

                  Name of each exchange on which each class is
                                to be registered
                                      None

       Securities to be registered pursuant to Section 12(g) of the Act:
                                                    
                         Preferred Share Purchase Rights
                                (Title of Class)

<PAGE>
Item     1. Description of Securities to be Registered.

         Effective as of December 6, 1996, pursuant to a Preferred Shares Rights
Agreement (the "Rights  Agreement")  between  Exogen,  Inc. (the  "Company") and
Registrar and Transfer  Company,  as Rights  Agent  (the  "Rights  Agent"),  the
Company's  Board of  Directors  declared a dividend  of one right (a "Right") to
purchase  one  one-hundredth  share  of the  Company's  Series  A  Participating
Preferred  Stock  ("Series A Preferred")  for each  outstanding  share of Common
Stock,  par value  $0.0001 per share  ("Common  Shares"),  of the  Company.  The
dividend is payable on December 19, 1996 (the "Record Date") to  stockholders of
record as of the  close of  business  on that  date.  Each  Right  entitles  the
registered  holder to purchase from the Company one  one-hundredth of a share of
Series A  Preferred  at an  exercise  price of $30.00  (the  "Purchase  Price"),
subject to adjustment in the event the Company declares a dividend on the Common
Stock payable in Common Stock,  subdivides the number of  outstanding  shares of
Common  Stock  into a larger  number of such  shares or  combines  the number of
outstanding  shares of Common Stock into a smaller number of such shares,  among
other circumstances.  In addition,  under certain  circumstances  described more
fully herein, the Rights may become exercisable for a number of shares of Common
Stock having a value equal to two times the Purchase  Price and/or  Common Stock
of certain  acquiring  companies  having a value equal to two times the Purchase
Price.

         The following summary of the principal terms of the Rights Agreement is
a general  description  only and is subject to the detailed terms and conditions
of the Rights  Agreement.  A copy of the Rights Agreement is attached as Exhibit
99.1 to this  Registration  Statement and is  incorporated  herein by reference;
capitalized  terms used but not otherwise defined herein shall have the meanings
ascribed to them in the Rights Agreement.

Certain Anti-takeover Effects

         The Rights  approved by the Board are  designed to protect and maximize
the value of the outstanding  equity interests in the Company in the event of an
unsolicited  attempt by an acquiror to take over the Company,  in a manner or on
terms not  approved  by the Board of  Directors.  Takeover  attempts  frequently
include  coercive  tactics to deprive the  Company's  Board of Directors and its
stockholders of any real opportunity to determine the destiny of the Company.

         The  Rights  have been  declared  by the  Board in order to deter  such
tactics, including a gradual accumulation in the open market of a 15% or greater
position to be followed by a merger or a partial or two-tier  tender  offer that
does not treat all stockholders  equally.  These tactics can operate to unfairly
pressure  stockholders,  force them out of their  investment and deprive them of
the full value of their shares.

         The Rights are not  intended  to prevent a takeover  of the Company and
will not do so.  The  Rights may be  redeemed  by the  Company at $.01 per Right
within ten days (or on such later date as may be determined by a majority of the
Board of Directors,  excluding  directors  affiliated with an Acquiring  Person)
after  the  accumulation  of 15% or more of the  Company's  shares  by a  single
acquiror or group. Accordingly,  the Rights should not interfere with any merger
or business combination approved by the Board of Directors.
<PAGE>
         However,  the Rights may have the effect of rendering more difficult or
discouraging  an acquisition  of the Company deemed  undesirable by the Board of
Directors.  The Rights may cause substantial  dilution to a person or group that
attempts  to acquire  the  Company on terms or in a manner not  approved  by the
Company's Board of Directors,  except pursuant to an offer  conditioned upon the
negation,  purchase or redemption of the Rights.  As a result,  while the Rights
may  provide the Board with  leverage to obtain a higher  price from a potential
acquiror,  they may also prevent or deter offers not approved by the Board,  and
therefore deprive  stockholders,  without providing them with the opportunity to
vote thereon,  of the benefits of offers which may be at a higher price than the
current  market price of the Company's  Common Stock.  In addition,  assuming an
active trading market in the Rights  themselves  does not develop,  stockholders
with lesser financial means might not be able to take full economic advantage of
the  Rights.  Further,  the  implementation  of a rights plan may  heighten  the
susceptibility  of the Company to  greenmail  by  stockholders  who  threaten to
acquire a sufficient equity position to pass the Rights'  triggering  threshold,
although  the Board can  respond to any such action by  redeeming  the Rights at
$.01 per Right.

         Issuance  of the  Rights  does  not in any  way  weaken  the  financial
strength of the Company or interfere  with its business  plans.  The issuance of
the Rights themselves has no dilutive effect,  will not affect reported earnings
per share, should not be taxable to the Company or to its stockholders, and will
not  change the way in which the  Company's  shares are  presently  traded.  The
Company's  Board of  Directors  believes  that the Rights  represent a sound and
reasonable means of addressing the complex issues of corporate policy created by
the current takeover environment.

Rights Evidenced by Common Share Certificates

         The Rights will not be exercisable until the Distribution Date (defined
below).  Prior to the  Distribution  Date,  certificates for the Rights ("Rights
Certificates")  will not be sent to  stockholders  and the Rights will attach to
and trade  only  together  with the Common  Shares.  Accordingly,  Common  Share
certificates  outstanding  on the Record Date will  evidence the Rights  related
thereto, and Common Share certificates issued after the Record Date but prior to
the Distribution Date will contain a notation incorporating the Rights Agreement
by reference.  Until the Distribution Date (or earlier  redemption or expiration
of the Rights), the surrender or transfer of any certificates for Common Shares,
even without  notation or a copy of the Summary of Rights being attached thereto
(but as to certificates representing Common Shares issued after the Record Date,
only if they  bear the  legend  required  by the  Rights  Agreement),  will also
constitute  the  transfer  of the  Rights  associated  with  the  Common  Shares
represented by such certificate.
<PAGE>
Distribution Date

         The Rights will separate from the Common  Shares,  Rights  Certificates
will be issued and the Rights will become  exercisable  upon the earlier of: (i)
10 days (or such later date as may be  determined  by a majority of the Board of
Directors,  excluding directors affiliated with the Acquiring Person, as defined
below (the  "Continuing  Directors"))  following  a public  announcement  that a
person or group of affiliated or associated persons (an "Acquiring  Person") has
acquired, or obtained the right to acquire,  beneficial ownership of 15% or more
of the outstanding  Common Shares, or (ii) 10 days (or such later date as may be
determined by a majority of the Continuing Directors) following the commencement
of, or  announcement  of an intention to make, a tender offer or exchange  offer
the  consummation of which would result in the beneficial  ownership by a person
or group of 15% or more of the  outstanding  Common Shares.  The earlier of such
dates is referred to as the "Distribution Date."

Issuance of Rights Certificates; Expiration of Rights

         As soon as practicable following the Distribution Date, separate Rights
Certificates  will be mailed to holders of record of the Common Shares as of the
close of business on the Distribution Date and such separate Rights Certificates
alone will evidence the Rights from and after the Distribution  Date. All Common
Shares issued prior to the Distribution Date will be issued with Rights.  Common
Shares  issued  after the  Distribution  Date may be issued  with Rights if such
shares are issued (i) upon the conversion of outstanding  convertible debentures
or any  other  convertible  securities  issued  after  adoption  of  the  Rights
Agreement or (ii)  pursuant to the exercise of stock  options or under  employee
benefit plans or arrangements  unless such issuance would result in (or create a
risk that) such options,  plans or arrangements  would not qualify for otherwise
available special tax treatment.  Except as otherwise determined by the Board of
Directors,  no other Common  Shares issued after the  Distribution  Date will be
issued with  Rights.  The Rights will expire on the earliest of (i) December 19,
2006 (the "Final Expiration Date"), (ii) redemption or exchange of the Rights as
described  below,  or  (iii)  consummation  of an  acquisition  of  the  Company
satisfying  certain  conditions  by a person who acquired  shares  pursuant to a
Permitted Offer as described below.

Initial Exercise of the Rights

         Following the  Distribution  Date,  and until one of the further events
described  below,  holders of the  Rights  will be  entitled  to  receive,  upon
exercise  and the payment of $30.00 per Right,  one  one-hundredth  share of the
Series A Preferred,  subject to adjustment  in the event the Company  declares a
dividend on the Common Shares payable in Common Shares, subdivides the number of
outstanding  Common  Shares into a larger  number of such shares or combines the
number of outstanding Common Shares into a smaller number of such shares,  among
other circumstances.  In addition,  under certain  circumstances  described more
fully herein, the Rights may become exercisable for Common Shares having a value
equal to two times the Purchase  Price and/or Common Stock of certain  acquiring
companies having a value equal to two times the Purchase Price.
<PAGE>
Right to Buy Company Common Shares

         Unless the Rights are earlier redeemed,  in the event that an Acquiring
Person  becomes  the  beneficial  owner of 15% or more of the  Company's  Common
Shares then outstanding (other than pursuant to a Permitted Offer),  then proper
provision will be made so that each holder of a Right which has not  theretofore
been exercised (other than Rights  beneficially  owned by the Acquiring  Person,
which will thereafter be void) will  thereafter have the right to receive,  upon
exercise and payment of the Purchase  Price,  Common Shares having a value equal
to two times the  Purchase  Price.  For  example,  if the market price of Common
Shares on the Shares  Acquisition  Date (as defined below) was $15.00,  a person
holding one Right could  purchase  four (4) Common  Shares upon exercise of such
Right  ($30.00/$7.50),  whereas he/she could only purchase two (2) Common Shares
($30.00/$15.00)  in the absence  of such  Rights.  Rights  are  not  exercisable
following the  occurrence of an event as described  above until such time as the
Rights are no longer redeemable by the Company as set forth below.

         In the event that the Company does not have  sufficient  Common  Shares
available  for all  Rights  to be  exercised,  or the Board  decides  that it is
necessary  and not  contrary to the  interests  of Rights  holders to do so, the
Company may instead  substitute cash,  assets or other securities for the Common
Shares for which the Rights would have been exercisable under this provision.

Right to Buy Acquiring Company Stock

         Similarly,  unless the Rights are earlier redeemed,  in the event that,
after the Shares  Acquisition  Date,  (i) the Company is acquired in a merger or
other  business  combination  transaction,  or (ii) 50% or more of the Company's
consolidated assets or earning power are sold (other than in transactions in the
ordinary course of business)  (either of which event is referred to herein as an
"Acquisition"),  proper  provision  must be made so that each  holder of a Right
which has not theretofore been exercised (other than Rights  beneficially  owned
by the Acquiring Person, which will thereafter be void) will thereafter have the
right to receive, upon exercise, shares of Common Stock of the acquiring company
having a value equal to two times the  Purchase  Price  (unless the  transaction
satisfies  certain  conditions  and is  consummated  with a person who  acquired
shares pursuant to a Permitted Offer, in which case the Rights will expire).  So
(assuming no satisfaction of such conditions) if for example the market price of
the acquiror's stock on the date of the Acquisition were $7.50, a person holding
one Right could purchase  eight (8) shares of the  acquiror's  Common Stock upon
exercise of such Right  ($30.00/$3.75),  whereas he could only purchase four (4)
shares of acquiror's Common Stock ($30.00/$7.50) in the absence of such Rights.

Permitted Offer

         A  Permitted  Offer  means a tender  offer for all  outstanding  Common
Shares that has been determined by a majority of the Continuing  Directors to be
adequate  and   otherwise  in  the  best   interests  of  the  Company  and  its
stockholders.  Where the Board of Directors has  determined  that a tender offer
constitutes  a  Permitted  Offer,  the  Rights  will not become  exercisable  to
purchase  Common Shares or shares of the acquiring  company (as the case may be)
at the discounted price described above.
<PAGE>
Exchange Provision

         At any time after the acquisition by an Acquiring Person of 15% or more
of the Company's  outstanding Common Shares and prior to the acquisition by such
Acquiring Person of 50% or more of the Company's  outstanding Common Shares, the
Board of Directors of the Company,  following  the approval of a majority of the
Board of Directors and a majority of the Continuing Directors,  may exchange the
Rights (other than Rights owned by the Acquiring  Person),  in whole or in part,
at an exchange ratio of one Common Share per Right.

Redemption

         At any time on or prior to the close of  business on the earlier of (i)
the 10th day  following  the  acquisition  by an  Acquiring  Person (the "Shares
Acquisition  Date") or such later date as may be determined by a majority of the
Continuing  Directors and publicly  announced by the Company,  or (ii) the Final
Expiration Date of the Rights,  the Company may redeem the Rights in whole,  but
not in part, at a price of $.01 per Right.

Adjustments to Prevent Dilution

         The  Purchase  Price  payable,  the  number of Rights and the number of
Series A Preferred or Common  Shares or other  securities  or property  issuable
upon  exercise  of the Rights are  subject  to  adjustment  from time to time in
connection with the dilutive issuances by the Company as set forth in the Rights
Agreement.  With certain exceptions, no adjustment in the Purchase Price will be
required until  cumulative  adjustments  require an adjustment of at least 1% in
such Purchase Price.

Cash Paid Instead of Issuing Fractional Shares

         No fractional portion less than integral multiples of one one-hundredth
of a  Preferred  Share  will be  issued  upon  exercise  of a Right  and in lieu
thereof,  an  adjustment  in cash will be made based on the market  price of the
Common Shares on the last trading date prior to the date of exercise.

No Stockholders' Rights Prior to Exercise

         Until a Right is exercised,  the holder thereof,  as such, will have no
rights as a stockholder  of the Company  (other than any rights  resulting  from
such holder's ownership of Common Shares),  including,  without limitation,  the
right to vote or to receive dividends.

Amendment of Rights Agreement

         The provisions of the Rights  Agreement may be  supplemented or amended
by the Board of  Directors  in any manner  prior to the close of business on the
Distribution Date without the approval of Rights holders. After the Distribution
Date,  the  provisions  of the Rights  Agreement  may be amended by the Board in
order to cure any ambiguity,  defect or inconsistency,  to make changes which do
not adversely affect the interests of holders of Rights (excluding the interests
of any  Acquiring  Person),  or to shorten or lengthen any time period under the
Rights Agreement; provided, however, that no amendment to adjust the time period
governing redemption shall be made at such time as the Rights are not redeemable
or there are not  Continuing  Directors,  the  majority  of which  agree to such
adjustment.
<PAGE>
Rights and Preferences of the Series A Preferred

         Series A Preferred  purchasable upon exercise of the Rights will not be
redeemable.  Each share of Series A Preferred  will be entitled to an  aggregate
dividend of 100 times the dividend  declared per Common  Share.  In the event of
liquidation, the holders of the Series A Preferred will be entitled to a minimum
preferential liquidation payment equal to $100 per share. Each share of Series A
Preferred will have 100 votes,  voting  together with the Common Shares.  In the
event of any  merger,  consolidation  or other  transaction  in which the Common
Shares  are  changed or  exchanged,  each  share of Series A  Preferred  will be
entitled to receive 100 times the amount received per Common Share. These rights
are protected by customary anti-dilution provisions.

         Because of the nature of the dividend, liquidation and voting rights of
the shares of Series A Preferred, the value of the one one-hundredth interest in
a share of Series A Preferred  purchasable  upon  exercise of each Right  should
approximate the value of one Common Share.
<PAGE>
Item 2. Exhibits.

        Exhibit

             99.1                Preferred Share Rights  Agreement,  dated as of
                                 December 6,   1996,  between  Exogen,  Inc. and
                                 Registrar and Transfer  Company, including  the
                                 Certificate  of  Determination,   the  form  of
                                 Rights  Certificate  and the  Summary of Rights
                                 attached  thereto  as  Exhibits  A,  B  and  C,
                                 respectively.


<PAGE>



                                    SIGNATURE

         Pursuant to the  requirements of Section 12 of the Securities  Exchange
Act of 1934, the Registrant  has duly caused this  Registration  Statement to be
signed on its behalf by the undersigned, thereto duly authorized.

                                                     EXOGEN, INC.


Date:  December 10, 1996
                                           By: /s/ PATRICK A. MCBRAYER          
                                               -----------------------
                                                   Patrick A. McBrayer
                                                   President and Chief Executive
                                                   Officer

<PAGE>
                                  EXHIBIT INDEX




                                                                                
       Exhibit                                                                  
         No.           Exhibit                                                  
         ---           -------                                                  

        99.1           Preferred Share Rights Agreement, dated as of            
                       December 6, 1996, between Exogen, Inc. and
                       Registrar and Transfer Company, including the
                       Certificate   of   Determination,   the  form  of  Rights
                       Certificate and the Summary of Rights attached thereto as
                       Exhibits A, B and C, respectively.




<PAGE>
                                                                    EXHIBIT 99.1











                                  EXOGEN, INC.


                                       and

                         REGISTRAR AND TRANSFER COMPANY 

                                 (Rights Agent)











                                RIGHTS AGREEMENT


                          DATED AS OF DECEMBER 6, 1996


 


<PAGE>
                                TABLE OF CONTENTS 

                                                                                

Section 1.        Certain Definitions

Section 2.        Appointment of Rights Agent

Section 3.        Issuance of Rights Certificates

Section 4.        Form of Rights Certificates

Section 5.        Countersignature and Registration

Section 6.        Transfer, Split  Up, Combination and Exchange of Rights
                  Certificates; Mutilated, Destroyed, Lost or Stolen Rights
                  Certificates

Section 7.        Exercise of Rights; Purchase Price; Expiration Date of Rights

Section 8.        Cancellation and Destruction of Rights Certificates

Section 9.        Reservation and Availability of Preferred Shares

Section 10.       Preferred Shares Record Date
 
Section 11.       Adjustment of Purchase Price, Number of Shares or Number of
                  Rights

Section 12.       Certificate of Adjusted Purchase Price or Number of Shares

Section 13.       Consolidation, Merger or Sale or Transfer of Assets or Earning
                  Power

Section 14.       Fractional Rights and Fractional Shares                       

Section 15.       Rights of Action

Section 16.       Agreement of Rights Holders

Section 17.       Rights Certificate Holder Not Deemed a Stockholder

Section 18.       Concerning the Rights Agent

Section 19.       Merger or Consolidation or Change of Name of Rights Agent

Section 20.       Duties of Rights Agent

Section 21.       Change of Rights Agent

Section 22.       Issuance of New Rights Certificates

Section 23.       Redemption

Section 24.       Exchange

Section 25.       Notice of Certain Events
<PAGE>

Section 26.       Notices

Section 27.       Supplements and Amendments

Section 28.       Successors

Section 29.       Determinations and Actions by the Board of Directors, etc.

Section 30.       Benefits of this Agreement

Section 31.       Severability

Section 32.       Governing Law

Section 33.       Counterparts

Section 34.       Descriptive Headings


EXHIBITS

Exhibit A         Form of Certificate of Designation

Exhibit B         Form of Rights Certificate

Exhibit C         Summary of Rights
<PAGE>
                                RIGHTS AGREEMENT 


         Rights  Agreement,  dated as of  December  6, 1996  (the  "Agreement"),
between Exogen, Inc., a Delaware corporation (the "Company"),  and Registrar and
Transfer Company  (the "Rights Agent").

         On December 6, 1996 (the "Rights Dividend Declaration Date"), the Board
of Directors of the Company  authorized and declared a dividend of one Preferred
Share purchase right (a "Right") for each Common Share (as hereinafter  defined)
of the Company outstanding as of the Close of Business (as hereinafter  defined)
on December 19, 1996 (the "Record Date"),  each Right  representing the right to
purchase one one-hundredth of a share of Series A Participating  Preferred Stock
(as such number may be adjusted  pursuant to the provisions of this  Agreement),
having  the  rights,  preferences  and  privileges  set  forth  in the  form  of
Certificate  of Designation  of Rights,  Preferences  and Privileges of Series A
Participating  Preferred  Stock attached hereto as Exhibit A, upon the terms and
subject to the conditions herein set forth, and further  authorized and directed
the  issuance  of one Right (as such  number  may be  adjusted  pursuant  to the
provisions  of this  Agreement)  with  respect to each  Common  Share that shall
become  outstanding  between the Record Date and the earlier of the Distribution
Date and the Expiration  Date (as such terms are  hereinafter  defined),  and in
certain circumstances after the Distribution Date.

         NOW,  THEREFORE,  in  consideration  of the  promises  and  the  mutual
agreements herein set forth, the parties hereby agree as follows:

         Section 1. Certain  Definitions.  For purposes of this  Agreement,  the
following terms have the meanings indicated:

         (a)  "Acquiring  Person"  shall mean any Person who,  together with all
         Affiliates and Associates of such Person, shall be the Beneficial Owner
         of 15% or more of the Common  Shares  then  outstanding,  but shall not
         include:

               (i) the Company;

               (ii) any Subsidiary of the Company;

               (iii)  any  employee  benefit  plan  of  the  Company  or of  any
               Subsidiary  of the  Company,  or any Person or entity  organized,
               appointed  or  established  by the Company for or pursuant to the
               terms of any such plan;

               (iv) any  Person  who  becomes an  Acquiring  Person  solely as a
               result of a reduction in the number of Common Shares  outstanding
               due to the repurchase of Common Shares by the Company, unless and
               until such Person shall  thereafter  purchase or otherwise become
               the Beneficial Owner of additional Common Shares  constituting 1%
               or more of the Common  Shares  outstanding  at the time that such
               Person  becomes the  Beneficial  Owner of 15% or more of the then
               outstanding Common Shares.
<PAGE>
         Notwithstanding the foregoing, "Acquiring Person" shall not include any
Person  whose  ownership  of 15% or more of the Common  Shares then  outstanding
results  from any  action,  transaction  or series of  transactions  approved in
advance by a majority  of the  Continuing  Directors  of the Company who are not
Affiliates or Associates of such Person or  representatives of such Person or of
any such  Affiliate  or  Associate  (provided  that such Person  shall become an
Acquiring  Person if such Person shall  thereafter  purchase or otherwise become
the Beneficial Owner of additional Common Shares  constituting 1% or more of the
then  outstanding  Common  Shares  unless  otherwise  approved  in  advance by a
majority of the  Continuing  Directors  who are not  Affiliates or Associates of
such  Person  or  representatives  of such  Person or of any such  Affiliate  or
Associate); provided, however, that any transfer of Common Shares by such Person
to a third party (other than the Company,  any  subsidiary  of the Company,  any
employee benefit plan of the Company or any trustee in respect thereof acting in
such  capacity)  who after such  transfer  owns 15% or more of the Common Shares
then outstanding will cause the Rights to become  exercisable at the time and in
the manner  provided for herein,  unless such  transferee's  ownership of 15% or
more of the Common Shares is approved in advance by a majority of the Continuing
Directors  who  are  not   Affiliates  or  Associates  of  such   transferee  or
representatives of such transferee or of any such Affiliate or Associate. If the
Continuing  Directors  of the Company  determine in good faith that a Person who
would  otherwise be an "Acquiring  Person" as defined  pursuant to the foregoing
provisions of this paragraph (a), has become such inadvertently, and such Person
divests as promptly as practicable a sufficient  number of Common Shares so that
such Person would no longer be an "Acquiring  Person" as defined pursuant to the
foregoing provisions of this paragraph (a), then such Person shall not be deemed
to be an "Acquiring Person" for any purpose of this Agreement.

         (b)  "Adjustment  Shares"  shall have the  meaning set forth in Section
         11(a)(ii) hereof.

         (c)  "Affiliate"  and  "Associate"  shall have the respective  meanings
         ascribed  to  such  terms  in  Rule  12b-2  of the  General  Rules  and
         Regulations under the Exchange Act.

         (d) A Person  shall be deemed the  "Beneficial  Owner" of, and shall be
         deemed to "beneficially own" any securities:

               (i) which  such  Person  or any of such  Person's  Affiliates  or
               Associates   beneficially  owns,  directly  or  indirectly,   for
               purposes  of  Section  13(d) of the  Exchange  Act and Rule 13d-3
               thereunder (or any comparable or successor law or regulation);

               (ii)  which such  Person or any of such  Person's  Affiliates  or
               Associates,  directly or indirectly, has (A) the right to acquire
               (whether such right is exercisable  immediately or only after the
               passage  of  time)  pursuant  to any  agreement,  arrangement  or
               understanding  (other than customary  agreements with and between
               underwriters  and selling  group  members  with respect to a bona
               fide public  offering  of  securities),  or upon the  exercise of
               conversion  rights,  exchange  rights,  rights  (other  than  the
               Rights),  warrants or options, or otherwise;  provided,  however,
               that a  Person  shall  not be  deemed  pursuant  to this  Section
               1(c)(ii)(A) the Beneficial Owner of, or to beneficially  own, (1)
               securities  tendered  pursuant to a tender or exchange offer made
               by or on behalf of such Person or any of such Person's Affiliates
<PAGE>
               or  Associates  until such tendered  securities  are accepted for
               purchase or exchange,  or (2) securities which a Person or any of
               such Person's  Affiliates or Associates may be deemed to have the
               right to  acquire  pursuant  to any  merger or other  acquisition
               agreement  between the Company and such Person (or one or more of
               its Affiliates or Associates) if such agreement has been approved
               by the Board of Directors of the Company  prior to there being an
               Acquiring  Person;  or (B) the right to vote or dispose of or has
               "beneficial  ownership" of (as determined  pursuant to Rule 13d-3
               of the General  Rules and  Regulations  under the Exchange  Act),
               including    pursuant   to   any   agreement,    arrangement   or
               understanding, whether or not in writing; provided, however, that
               a Person  shall not be deemed  the  "Beneficial  Owner" of, or to
               "Beneficially Own," any security under this subparagraph  (ii)(B)
               of this paragraph (c) as a result of an agreement, arrangement or
               understanding   to  vote  such   security   if  such   agreement,
               arrangement or understanding:  (1) arises solely from a revocable
               proxy given in response to a public proxy or consent solicitation
               made  pursuant  to,  and  in  accordance   with,  the  applicable
               provisions of the General Rules and Regulation under the Exchange
               Act,  and (2) is not  also  then  reportable  by such  Person  on
               Schedule  13D  under  the  Exchange  Act  (or any  comparable  or
               successor report); or

               (iii) which are beneficially  owned,  directly or indirectly,  by
               any other Person (or any  Affiliate or  Associate  thereof)  with
               which  such  Person  (or  any  of  such  Person's  Affiliates  or
               Associates)  has any  agreement,  arrangement  or  understanding,
               whether or not in writing (other than customary  agreements  with
               and between  underwriters  and selling group members with respect
               to a bona fide public offering of securities), for the purpose of
               acquiring,  holding, voting (except to the extent contemplated by
               the proviso to  subparagraph  (ii)(B) of this  paragraph  (c)) or
               disposing of any  securities of the Company;  provided,  however,
               that in no case shall an officer or  director  of the  Company be
               deemed (x) the Beneficial  Owner of any  securities  beneficially
               owned by another  officer or director  of the  Company  solely by
               reason of actions undertaken by such persons in their capacity as
               officers or directors of the Company or (y) the Beneficial  Owner
               of  securities  held of record  by the  trustee  of any  employee
               benefit plan of the Company or any  Subsidiary of the Company for
               the benefit of any employee of the Company or any  Subsidiary  of
               the Company, other than the officer or director, by reason of any
               influence  that such officer or director may have over the voting
               of the securities held in the plan.

         (e) "Business Day" shall mean any day other than a Saturday,  Sunday or
         a day on  which  banking  institutions  in the  State  of  Delaware  or
         California  are  authorized  or obligated by law or executive  order to
         close.

         (f)  "Close  of  Business"  on any given  date  shall  mean 5:00  p.m.,
         California time, on such date; provided,  however, that if such date is
         not a Business  Day it shall mean 5:00 p.m.,  California  time,  on the
         next succeeding Business Day.
<PAGE>
         (g) "Common  Shares" shall mean the shares of Common  Stock,  par value
         $0.0001,  of the Company,  except that  "Common  Shares" when used with
         reference to any Person  other than the Company  shall mean the capital
         stock of such  Person with the  greatest  voting  power,  or the equity
         securities or other equity  interest  having power to control or direct
         the management, of such Person.

         (h)  "common  stock  equivalents"  shall have the  meaning set forth in
         Section 11(a)(iv) hereof.

         (i)  "Continuing  Director"  shall  mean (i) any member of the Board of
         Directors of the Company, while a member of the Board of Directors, who
         is  not  an  Acquiring  Person,  or an  Affiliate  or  Associate  of an
         Acquiring  Person, or a representative of an Acquiring Person or of any
         such  Affiliate  or  Associate,  and who was a member  of the  Board of
         Directors  on the date that the Board of Directors  initially  approved
         this Agreement, or (ii) any Person who subsequently becomes a member of
         the Board of Directors,  while a member of the Board of Directors,  who
         is  not  an  Acquiring  Person,  or an  Affiliate  or  Associate  of an
         Acquiring  Person, or a representative of an Acquiring Person or of any
         such Affiliate or Associate,  if such Person's  nomination for election
         or election to the Board of Directors is  recommended  or approved by a
         majority of the Continuing Directors.

         (j) "current  per share market  price" shall have the meaning set forth
         in Section 11(d) hereof.

         (k)  "Current  Value"  shall  have the  meaning  set  forth in  Section
         11(a)(iv) hereof.

         (l)  "Distribution  Date"  shall  mean the  earlier of (i) the Close of
         Business on the tenth day (or such later date as may be  determined  by
         action of a majority of Continuing  Directors then in office) after the
         Shares  Acquisition  Date  (or,  if the  tenth  day  after  the  Shares
         Acquisition  Date occurs before the Record Date,  the Close of Business
         on the Record  Date) or (ii) the Close of Business on the tenth day (or
         such  later  date as may be  determined  by  action  of a  majority  of
         Continuing  Directors  then in office)  after the date that a tender or
         exchange offer by any Person (other than the Company, any Subsidiary of
         the  Company,  any  employee  benefit  plan  of the  Company  or of any
         Subsidiary of the Company, or any Person or entity organized, appointed
         or  established by the Company for or pursuant to the terms of any such
         plan) is first  published  or sent or given  within the meaning of Rule
         14d-2(a) of the General Rules and  Regulations  under the Exchange Act,
         if, assuming the successful  consummation thereof, such Person would be
         the Beneficial  Owner of 15% or more of the shares of Common Stock then
         outstanding.

         (m) "Equivalent Shares" shall mean Preferred Shares and any other class
         or  series  of  capital  stock  of the  Company  which is  entitled  to
         participate   in   dividends   and   other   distributions,   including
         distributions  upon the  liquidation,  dissolution or winding up of the
         Company, on a proportional basis with the Common Shares. In calculating
         the number of any class or series of Equivalent  Shares for purposes of
         Section 11 of this Rights Agreement, the number of shares, or fractions
         of a share,  of such class or series of capital  stock that is entitled
         to the same dividend or  distribution  as a whole Common Share shall be
         deemed to be one share.
<PAGE>
         (n) "Exchange Act" shall mean the  Securities  Exchange Act of 1934, as
         amended.

         (o)  "Exchange  Fraction"  shall have the  meaning set forth in Section
         11(p) hereof.

         (p) "Exchange  Ratio" shall have the meaning set forth in Section 11(a)
         hereof.

         (q)  "Expiration  Date"  shall  mean the  earlier  of (i) the  Close of
         Business on the Final  Expiration Date, (ii) the Redemption Date, (iii)
         the time at which the Board of  Directors  orders the  exchange  of the
         Rights as provided in Section 24 hereof,  or (iv) the consummation of a
         transaction contemplated by Section 13(d) hereof.

         (r) "Final Expiration Date" shall mean December 19, 2006.

         (s) "Nasdaq" shall mean the National Association of Securities Dealers,
         Inc. Automated Quotation System.

         (t)  "Permitted  Offer" shall mean a tender  offer for all  outstanding
         Common  Shares made in the manner  prescribed  by Section  14(d) of the
         Exchange  Act and the rules  and  regulations  promulgated  thereunder;
         provided,  however,  that  such  tender  offer  occurs  at a time  when
         Continuing  Directors  are in office and a majority  of the  Continuing
         Directors then in office has determined that the offer is both adequate
         and otherwise in the best interests of the Company and its stockholders
         (taking into account all factors that such  Continuing  Directors  deem
         relevant).

         (u) "Person"  shall mean any  individual,  firm,  corporation  or other
         entity,  and shall  include any  successor  (by merger or otherwise) of
         such entity.

         (v) "Post  Transferee" shall have the meaning set forth in Section 7(e)
         hereof.

         (w)  "Preferred  Shares"  shall mean  shares of Series A  Participating
         Preferred Stock of the Company.

         (x) "Principal Party" shall have the meaning set forth in Section 13(b)
         hereof.

         (y) "Prior Transferee" shall have the meaning set forth in Section 7(e)
         hereof.

         (z)  "Purchase  Price" shall have the meaning set forth in Section 4(a)
         hereof.

         (aa)  "Ratio of  Exchange"  shall have the meaning set forth in Section
         24(a) hereof.

         (ab) "Record  Date" shall have the meaning set forth in the recitals at
         the beginning of this Agreement.

         (ac)  "Redemption  Date"  shall  mean the time at  which  the  Board of
         Directors of the Company orders redemption of the Rights as provided in
         Section 23 hereof.
<PAGE>
         (ad)  "Redemption  Price"  shall have the  meaning set forth in Section
         23(a) hereof.

         (ae)  "Rights  Dividend  Declaration  Date"  shall have the meaning set
         forth in the recitals at the beginning of this Agreement.

         (af) "Section  11(a)(ii) Trigger Date" shall have the meaning set forth
         in Section 11(a)(iv) hereof.

         (ag)  "Section 13 Event" shall mean any event  described in clause (i),
         (ii) or (iii) of Section 13(a) hereof.

         (ah)  "Securities  Act"  shall  mean the  Securities  Act of  1933,  as
         amended.

         (ai)  "Spread"  shall have the meaning  set forth in Section  11(a)(iv)
         hereof.

         (aj)  "Shares  Acquisition  Date"  shall  mean the first date of public
         announcement  (which,  for purposes of this definition,  shall include,
         without limitation,  a report filed pursuant to Section 13(d) under the
         Exchange  Act) by the Company or an Acquiring  Person that an Acquiring
         Person has become such; provided that, if such person is determined not
         to have become an  Acquiring  Person  pursuant to Section  1(a) hereof,
         then no Shares Acquisition Date shall be deemed to have occurred.

         (ak)  "Subsidiary"  of any Person shall mean any  corporation  or other
         entity of which an amount of voting  securities  sufficient  to elect a
         majority of the directors or Persons having  similar  authority of such
         corporation  or  other  entity  is  Beneficially  Owned,   directly  or
         indirectly, by such Person.

         (al) "Substitution Period" shall have the meaning set forth in Section

         (am) "Total Exercise Price" shall have the meaning set forth in Section
         4(a) hereof.

         (an)  "Trading  Day" shall have the meaning set forth in Section  11(d)
         hereof.

         (ao) A  "Triggering  Event" shall be deemed to have  occurred  upon any
         Person  (other than the Company,  any  Subsidiary  of the Company,  any
         employee  benefit plan of the Company or any Subsidiary of the Company,
         or any entity holding Common Shares for or pursuant to the terms of any
         such plan), together with all Affiliates and Associates of such Person,
         becoming an Acquiring Person.

         Section 2. Appointment of Rights Agent. The Company hereby appoints the
Rights Agent to act as agent for the Company and the holders of the Rights (who,
in accordance with Section 3 hereof,  shall prior to the Distribution  Date also
be the holders of the Common Shares) in accordance with the terms and conditions
hereof,  and the Rights Agent hereby accepts such  appointment.  The Company may
from time to time  appoint  such  co-Rights  Agents as it may deem  necessary or
desirable. Contemporaneously with any such appointment, the Company shall notify
the Rights Agent thereof.
<PAGE>
         Section 3. Issuance of Rights Certificates.

         (a) Until the  Distribution  Date,  (i) the  Rights  will be  evidenced
         (subject to the  provisions  of Sections  3(b) and 3(c)  hereof) by the
         certificates  for Common Shares  registered in the names of the holders
         thereof  (which   certificates  shall  also  be  deemed  to  be  Rights
         Certificates)  and not by separate  Rights  Certificates,  and (ii) the
         right to  receive  Rights  Certificates  will be  transferable  only in
         connection with the transfer of Common Shares. Until the earlier of the
         Distribution Date or the Expiration Date, the surrender for transfer of
         such certificates for Common Shares shall also constitute the surrender
         for  transfer  of  the  Rights   associated   with  the  Common  Shares
         represented  thereby.  As soon as  practicable  after the  Distribution
         Date,  the Company  will  prepare and  execute,  the Rights  Agent will
         countersign,  and the  Company  will  send or cause to be sent (and the
         Rights Agent will, if requested, send) by first-class,  postage-prepaid
         mail,  to each  record  holder  of  Common  Shares  as of the  close of
         business on the Distribution  Date, at the address of such holder shown
         on the records of the Company, a Rights  Certificate,  in substantially
         the form of Exhibit B hereto (a "Rights  Certificate"),  evidencing one
         Right for each Common Share so held,  subject to adjustment as provided
         herein.  In the event  that an  adjustment  in the number of Rights per
         Common Share has been made pursuant to Section 11(a)(i),  Section 11(i)
         or Section 11(p) hereof, then at the time of distribution of the Rights
         Certificates,  the Company  shall make the  necessary  and  appropriate
         rounding  adjustments (in accordance with Section 14(a) hereof) so that
         Rights  Certificates  representing  only  whole  numbers  of Rights are
         distributed  and cash is paid in lieu of any fractional  Rights.  As of
         the  Distribution  Date,  the Rights will be  evidenced  solely by such
         Rights  Certificates  and may be  transferred  by the  transfer  of the
         Rights Certificates as permitted hereby,  separately and apart from any
         transfer of one or more Common  Shares,  and the holders of such Rights
         Certificates  as listed in the records of the  Company or any  transfer
         agent or registrar for the Rights shall be the record holders thereof.

         (b) On the  Record  Date  or as  soon as  practicable  thereafter,  the
         Company  will send a copy of a Summary of Rights in  substantially  the
         form of Exhibit C hereto (the  "Summary of  Rights"),  by  first-class,
         postage-prepaid  mail, to each record holder of Common Shares as of the
         close of  business  on the Record  Date,  at the address of such holder
         shown on the records of the Company.

         (c) Unless the Board of  Directors by  resolution  adopted at or before
         the time of the issuance  (including pursuant to the exercise of rights
         under the Company's  benefit  plans) of any Common Shares  specifies to
         the  contrary,  Rights shall be issued in respect of all Common  Shares
         that are issued  after the Record  Date but prior to the earlier of the
         Distribution  Date or the Expiration Date or, in certain  circumstances
         provided   in  Section  22  hereof,   after  the   Distribution   Date.
         Certificates representing such Common Shares shall also be deemed to be
         certificates for Rights, and shall bear the following legend:
<PAGE>
                  This certificate also evidences and entitles the holder hereof
                  to certain Rights as set forth in a Rights  Agreement  between
                  Exogen, Inc. and  Registrar  and Transfer  Company,  as Rights
                  Agent, dated as of December 6, 1996  (the "Rights Agreement"),
                  the terms of which are hereby incorporated herein by reference
                  and a copy of  which  is on file  at the  principal  executive
                  offices of Exogen,  Inc. Under certain  circumstances,  as set
                  forth in the Rights  Agreement,  such Rights will be evidenced
                  by separate  certificates  and will no longer be  evidenced by
                  this certificate. Exogen, Inc. will mail to the holder of this
                  certificate  a copy of the Rights  Agreement,  as in effect on
                  the date of mailing,  without charge promptly after receipt of
                  a written request  therefor.  Under certain  circumstances set
                  forth in the Rights  Agreement,  Rights issued to, or held by,
                  any Person who is, was or becomes an  Acquiring  Person or any
                  Affiliate or  Associate  thereof (as such terms are defined in
                  the Rights Agreement),  whether currently held by or on behalf
                  of such Person or by any  subsequent  holder,  may become null
                  and void.  

         With respect to such  certificates  containing  the  foregoing  legend,
         until the earlier of (i) the  Distribution  Date or (ii) the Expiration
         Date, the Rights associated with the Common Shares  represented by such
         certificates   shall  be  evidenced  by  such  certificates  alone  and
         registered  holders  of  Common  Shares  shall  also be the  registered
         holders of the associated Rights, and the surrender for transfer of any
         such  certificate  shall also  constitute  the  transfer  of the Rights
         associated  with the Common Shares  represented  thereby.  In the event
         that the Company  purchases  or acquires  any Common  Shares  after the
         Record Date but prior to the Distribution  Date, any Rights  associated
         with such Common  Shares  shall be deemed  canceled and retired so that
         the Company  shall not be entitled  to exercise  any Rights  associated
         with the Common Shares which are no longer outstanding.

         Section 4. Form of Rights Certificates.

         (a) The Rights  Certificates  (and the forms of  election  to  purchase
         Common Shares and of  assignment to be printed on the reverse  thereof)
         shall be  substantially  in the form of  Exhibit B hereto  and may have
         such marks of identification or designation and such legends, summaries
         or endorsements printed thereon as the Company may deem appropriate and
         as are not  inconsistent  with the provisions of this Agreement,  or as
         may be required to comply with any  applicable  law or with any rule or
         regulation made pursuant  thereto or with any rule or regulation of any
         stock exchange on which the Rights may from time to time be listed,  or
         to  conform  to usage.  Subject  to the  provisions  of  Section 11 and
         Section 22 hereof, the Rights Certificates, whenever distributed, shall
         be dated as of the Record  Date (or in the case of Rights  issued  with
         respect to Common  Shares  issued by the Company after the Record Date,
         as of the date of  issuance  of such  Common  Shares) and on their face
         shall  entitle  the  holders  thereof to  purchase  such  number of one
         one-hundredths  of a Preferred  Share as shall be set forth  therein at
<PAGE>
         the price set forth therein (such exercise price per one  one-hundredth
         of a Preferred  Share being  hereinafter  referred to as the  "Purchase
         Price"  and  the  aggregate  exercise  price  of all  Preferred  Shares
         issuable  upon exercise of one Right being  hereinafter  referred to as
         the "Total  Exercise  Price"),  but the  number and type of  securities
         purchasable  upon the  exercise  of each Right and the  Purchase  Price
         shall be subject to adjustment as provided herein.

         (b) Any Rights  Certificate  issued pursuant to Section 3(a) or Section
         22  hereof  that  represents  Rights  beneficially  owned  by:  (i)  an
         Acquiring Person or any Associate or Affiliate of an Acquiring  Person,
         (ii) a transferee of an Acquiring  Person (or of any such  Associate or
         Affiliate) who becomes a transferee  after the Acquiring Person becomes
         such or  (iii) a  transferee  of an  Acquiring  Person  (or of any such
         Associate  or  Affiliate)   who  becomes  a  transferee   prior  to  or
         concurrently  with the Acquiring Person becoming such and receives such
         Rights  pursuant  to  either  (A)  a  transfer   (whether  or  not  for
         consideration) from the Acquiring Person to holders of equity interests
         in such  Acquiring  Person or to any  Person  with whom such  Acquiring
         Person  has any  continuing  agreement,  arrangement  or  understanding
         regarding the  transferred  Rights or (B) a transfer which the Board of
         Directors of the Company has determined is part of a plan,  arrangement
         or understanding  which has as a primary purpose or effect avoidance of
         Section  7(e) hereof,  and any Rights  Certificate  issued  pursuant to
         Section 6 or Section 11 hereof upon transfer, exchange,  replacement or
         adjustment  of  any  other  Rights  Certificate  referred  to  in  this
         sentence, shall contain (to the extent feasible) the following legend:

                  The Rights  represented by this Rights Certificate are or were
                  beneficially  owned by a Person who was or became an Acquiring
                  Person or an Affiliate or Associate of an Acquiring Person (as
                  such terms are defined in the Rights Agreement between Exogen,
                  Inc. and  Registrar  and Transfer  Company,  as Rights  Agent,
                  dated  as of  December  6,  1996  (the  "Rights  Agreement")).
                  Accordingly,   this   Rights   Certificate   and  the   Rights
                  represented   hereby   may   become   null  and  void  in  the
                  circumstances   specified   in  Section  7(e)  of  the  Rights
                  Agreement.

         Section 5. Countersignature and Registration.

         (a) The Rights  Certificates shall be executed on behalf of the Company
         by  its  Chairman  of the  Board,  its  Chief  Executive  Officer,  its
         President  or any  Vice  President,  either  manually  or by  facsimile
         signature,  and shall have affixed  thereto the Company's seal (if any)
         or a facsimile  thereof  which shall be attested by the Secretary or an
         Assistant  Secretary  of the Company,  either  manually or by facsimile
         signature. The Rights Certificates shall be countersigned by the Rights
         Agent,  either  manually or by  facsimile  signature,  and shall not be
         valid for any purpose unless so  countersigned.  In case any officer of
         the Company who shall have signed any of the Rights  Certificates shall
         cease to be such officer of the Company before  countersignature by the
         Rights Agent and  issuance  and  delivery by the  Company,  such Rights
         Certificates,  nevertheless,  may be  countersigned by the Rights Agent
<PAGE>
         and issued and  delivered by the Company with the same force and effect
         as though the person who signed such Rights Certificates had not ceased
         to be such officer of the Company. Any Rights Certificate may be signed
         on behalf of the  Company by any person  who, at the actual date of the
         signing of such Rights  Certificate,  shall be a proper  officer of the
         Company to sign such  Rights  Certificate,  although at the date of the
         signing of this Agreement such person was not such an officer.

         (b)  Following  the  Distribution  Date,  the Rights Agent will keep or
         cause to be kept, at its office designated for such purposes, books for
         registration and transfer of the Rights  Certificates issued hereunder.
         Such books shall show the names and addresses of the respective holders
         of the Rights Certificates,  the number of Rights evidenced on its face
         by each of the Rights  Certificates  and the date of each of the Rights
         Certificates.

         Section 6.  Transfer,  Split Up,  Combination  and  Exchange  of Rights
Certificates; Mutilated, Destroyed, Lost or Stolen Rights Certificates.

         (a) Subject to the  provisions of Sections  7(e), 14 and 24 hereof,  at
         any time after the Close of Business on the  Distribution  Date, and at
         or prior to the Close of Business on the  Expiration  Date,  any Rights
         Certificate  or  Rights  Certificates  may be  transferred,  split  up,
         combined  or  exchanged  for  another  Rights   Certificate  or  Rights
         Certificates, entitling the registered holder to purchase a like number
         of one  one-hundredths of a Preferred Share (or, following a Triggering
         Event,  other securities,  cash or other assets, as the case may be) as
         the Rights Certificate or Rights Certificates surrendered then entitled
         such holder to purchase.  Any registered  holder  desiring to transfer,
         split  up,  combine  or  exchange  any  Rights  Certificate  or  Rights
         Certificates shall make such request in writing delivered to the Rights
         Agent,   and  shall   surrender  the  Rights   Certificate   or  Rights
         Certificates to be transferred,  split up, combined or exchanged at the
         office of the Rights Agent  designated  for such  purpose.  Neither the
         Rights  Agent nor the  Company  shall be  obligated  to take any action
         whatsoever with respect to the transfer of any such surrendered  Rights
         Certificate until the registered holder shall have completed and signed
         the certificate contained in the form of assignment on the reverse side
         of such Rights  Certificate  and shall have  provided  such  additional
         evidence of the identity of the Beneficial Owner (or former  Beneficial
         Owner)  or  Affiliates  or  Associates  thereof  as the  Company  shall
         reasonably  request.  Thereupon  the  Rights  Agent  shall,  subject to
         Sections 7(e), 14 and 24 hereof,  countersign and deliver to the person
         entitled thereto a Rights  Certificate or Rights  Certificates,  as the
         case may be, as so requested.  The Company may require payment of a sum
         sufficient to cover any tax or governmental  charge that may be imposed
         in connection with any transfer,  split up,  combination or exchange of
         Rights Certificates.

         (b) Upon  receipt  by the  Company  and the  Rights  Agent of  evidence
         reasonably  satisfactory  to them of the loss,  theft,  destruction  or
         mutilation  of a Rights  Certificate,  and,  in case of loss,  theft or
         destruction,  of indemnity or security reasonably satisfactory to them,
         and, at the  Company's  request,  reimbursement  to the Company and the
         Rights Agent of all reasonable expenses  incidental  thereto,  and upon
         surrender  to  the  Rights  Agent  and   cancellation   of  the  Rights
         Certificate  if  mutilated,  the  Company  will make and  deliver a new
         Rights  Certificate  of like tenor to the Rights  Agent for delivery to
         the  registered  holder  in lieu of the  Rights  Certificate  so  lost,
         stolen, destroyed or mutilated.
<PAGE>
         Section 7.  Exercise  of Rights;  Purchase  Price;  Expiration  Date of
Rights.

         (a) Subject to Sections  7(e),  23(b) and 24(b) hereof,  the registered
         holder of any Rights  Certificate  may  exercise  the Rights  evidenced
         thereby  (except as otherwise  provided  herein) in whole or in part at
         any time  after the  Distribution  Date upon  surrender  of the  Rights
         Certificate,  with the form of election to purchase on the reverse side
         thereof duly executed,  to the Rights Agent at the office of the Rights
         Agent  designated  for  such  purpose,  together  with  payment  of the
         Purchase Price for each  one-hundredth of a Preferred Share as to which
         the Rights are exercised, at or prior to the Expiration Date.

         (b) The Purchase Price for each one  one-hundredth of a Preferred Share
         issuable  pursuant to the exercise of a Right shall initially be Thirty
         Dollars  ($30.00),  shall be subject to adjustment from time to time as
         provided  in  Sections  11 and 13 hereof and shall be payable in lawful
         money of the United States of America in accordance  with paragraph (c)
         below.

         (c) Upon  receipt  of a  Rights  Certificate  representing  exercisable
         Rights,   with  the  form  of  election  to  purchase  duly   executed,
         accompanied  by  payment  of the  Purchase  Price for the number of one
         one-hundredths  of a Preferred Share (or other  securities or property,
         as  the  case  may  be) to be  purchased  and an  amount  equal  to any
         applicable  transfer  tax  required  to be paid by the  holder  of such
         Rights  Certificate in accordance  with Section 9 hereof in cash, or by
         certified check or cashier's check payable to the order of the Company,
         the Rights  Agent shall,  subject to Section  20(k)  hereof,  thereupon
         promptly (i) (A)  requisition  from any transfer agent of the Preferred
         Shares (or make  available,  if the Rights Agent is the transfer  agent
         for the Preferred  Shares) a certificate or certificates for the number
         of one  one-hundredths  of a Preferred  Share to be  purchased  and the
         Company hereby irrevocably authorizes its transfer agent to comply with
         all such  requests or (B) if the Company  shall have elected to deposit
         the total number of one  one-hundredths  of a Preferred  Share issuable
         upon  exercise  of  the  Rights  hereunder  with  a  depositary  agent,
         requisition   from  the   depositary   agent  of  depositary   receipts
         representing such number of one  one-hundredths of a Preferred Share as
         are to be  purchased  (in which  case  certificates  for the  Preferred
         Shares  represented by such receipts shall be deposited by the transfer
         agent with the  depositary  agent) and the Company  hereby  directs the
         depositary  agent to comply with such request,  (ii) when  appropriate,
         requisition  from the  Company the amount of cash to be paid in lieu of
         issuance of  fractional  shares in  accordance  with Section 14 hereof,
         (iii) after receipt of such certificates or depositary receipts,  cause
         the same to be delivered to or upon the order of the registered  holder
         of such Rights Certificate,  registered in such name or names as may be
         designated  by such  holder and (iv) when  appropriate,  after  receipt
         thereof,  deliver  such  cash to or upon the  order  of the  registered
         holder of such Rights  Certificate.  The payment of the Purchase  Price
         (as such amount may be reduced  (including to zero) pursuant to Section
         11(a)(iv)  hereof)  may be made in cash or by  certified  bank check or
<PAGE>
         bank draft  payable to the order of the Company.  In the event that the
         Company is obligated to issue other securities of the Company, pay cash
         and/or distribute other property pursuant to Section 11(a) hereof,  the
         Company  will  make  all  arrangements  necessary  so that  such  other
         securities,  cash and/or other property are available for  distribution
         by the Rights Agent, if and when appropriate.
 
         (d) In case the  registered  holder  of any  Rights  Certificate  shall
         exercise  less than all the  Rights  evidenced  thereby,  a new  Rights
         Certificate  evidencing  Rights  equivalent  to  the  Rights  remaining
         unexercised  shall be  issued  by the  Rights  Agent to the  registered
         holder  of such  Rights  Certificate  or to his or her duly  authorized
         assigns, subject to the provisions of Section 14 hereof.

         (e)  Notwithstanding  anything in this Agreement to the contrary,  from
         and after the first  occurrence  of a Triggering  Event or a Section 13
         Event, any Rights  beneficially  owned by (i) an Acquiring Person or an
         Associate or Affiliate of an Acquiring Person,  (ii) a transferee of an
         Acquiring  Person (or of any such Associate or Affiliate) who becomes a
         transferee   after  the   Acquiring   Person   becomes  such  (a  "Post
         Transferee"), (iii) a transferee of an Acquiring Person (or of any such
         Associate  or  Affiliate)   who  becomes  a  transferee   prior  to  or
         concurrently  with the Acquiring Person becoming such and receives such
         Rights  pursuant  to  either  (A)  a  transfer   (whether  or  not  for
         consideration) from the Acquiring Person to holders of equity interests
         in such  Acquiring  Person or to any  Person  with  whom the  Acquiring
         Person  has any  continuing  agreement,  arrangement  or  understanding
         regarding the  transferred  Rights or (B) a transfer which the Board of
         Directors of the Company has determined is part of a plan,  arrangement
         or understanding which has as a primary purpose or effect the avoidance
         of this  Section  7(e) (a "Prior  Transferee")  or (iv) any  subsequent
         transferee  receiving  transferred  Rights from a Post  Transferee or a
         Prior  Transferee,  either directly or through one or more intermediate
         transferees,  shall become null and void without any further action and
         no holder of such Rights shall have any rights  whatsoever with respect
         to such  Rights,  whether  under any  provision  of this  Agreement  or
         otherwise.  The Company shall use all reasonable efforts to insure that
         the  provisions  of this  Section  7(e) and  Section  4(b)  hereof  are
         complied  with,  but shall  have no  liability  to any holder of Rights
         Certificates  or to any other Person as a result of its failure to make
         any  determinations  with respect to an Acquiring Person or any of such
         Acquiring Person's Affiliates, Associates or transferees hereunder.

         (f) Notwithstanding anything in this Agreement to the contrary, neither
         the Rights Agent nor the Company  shall be  obligated to undertake  any
         action with respect to a registered  holder upon the  occurrence of any
         purported  exercise  as  set  forth  in  this  Section  7  unless  such
         registered  holder shall have (i) completed and signed the  certificate
         contained  in the form of election to purchase set forth on the reverse
         side of the Rights  Certificate  surrendered for such exercise and (ii)
         provided  such  additional  evidence of the identity of the  Beneficial
         Owner (or former Beneficial Owner) or Affiliates or Associates  thereof
         as the Company shall reasonably request.
<PAGE>
         Section 8.  Cancellation  and Destruction of Rights  Certificates.  All
Rights Certificates surrendered for the purpose of exercise, transfer, split up,
combination  or exchange  shall,  if surrendered to the Company or to any of its
agents,  be delivered to the Rights Agent for  cancellation or in canceled form,
or, if surrendered  to the Rights Agent,  shall be canceled by it, and no Rights
Certificates  shall be issued in lieu thereof  except as expressly  permitted by
any of the provisions of this Agreement. The Company shall deliver to the Rights
Agent for cancellation and retirement,  and the Rights Agent shall so cancel and
retire,  any other  Rights  Certificate  purchased  or  acquired  by the Company
otherwise  than upon the exercise  thereof.  The Rights Agent shall  deliver all
canceled Rights Certificates to the Company, or shall, at the written request of
the Company,  destroy such canceled Rights Certificates,  and in such case shall
deliver a certificate of destruction thereof to the Company.

         Section 9. Reservation and Availability of Preferred Shares.

         (a) The Company  covenants and agrees that it will use its best efforts
         to cause to be reserved and kept  available out of and to the extent of
         its authorized and unissued  shares of Preferred Stock not reserved for
         another purpose (and,  following the occurrence of a Triggering  Event,
         out of its authorized and unissued  shares of Common Stock and/or other
         securities),  the  number  of  Preferred  Shares  (and,  following  the
         occurrence  of  the  Triggering   Event,   Common  Stock  and/or  other
         securities)  that will be  sufficient to permit the exercise in full of
         all outstanding Rights.

         (b) If the Company shall hereafter list any of its Preferred  Shares on
         a national  securities  exchange,  then so long as the Preferred Shares
         (and,  following the  occurrence of a Triggering  Event,  Common Shares
         and/or other securities)  issuable and deliverable upon exercise of the
         Rights may be listed on such  exchange,  the Company shall use its best
         efforts  to  cause,  from and  after  such  time as the  Rights  become
         exercisable  (but only to the extent that it is reasonably  likely that
         the Rights will be exercised), all shares reserved for such issuance to
         be listed on such exchange  upon official  notice of issuance upon such
         exercise.

         (c) The  Company  shall use its best  efforts  to (i) file,  as soon as
         practicable following the earliest date after the first occurrence of a
         Triggering  Event in which the  consideration  to be  delivered  by the
         Company upon  exercise of the Rights has been  determined in accordance
         with  Section  11(a)(iv)  hereof,  or as  soon  as is  required  by law
         following the  Distribution  Date,  as the case may be, a  registration
         statement  under the  Securities  Act,  with respect to the  securities
         purchasable  upon exercise of the Rights on an appropriate  form,  (ii)
         cause  such  registration  statement  to  become  effective  as soon as
         practicable  after  such  filing  and  (iii)  cause  such  registration
         statement to remain  effective  (with a prospectus at all times meeting
         the  requirements of the Securities Act) until the date as of which the
         Rights are no longer exercisable for such securities. A majority of the
         Continuing  Directors may cause the Company temporarily to suspend, for
         a period  not to exceed  ninety  (90) days  after the date set forth in
         clause  (i)  of  the  first   sentence  of  this  Section   9(c),   the
         exercisability  of the Rights in order to enable the Company to prepare
         and file such registration statement and permit it to become effective.
<PAGE>
         Upon any such suspension, the Company shall issue a public announcement
         stating,  and notify the Rights Agent,  that the  exercisability of the
         Rights has been temporarily suspended, as well as a public announcement
         and  notification to the Rights Agent at such time as the suspension is
         no longer in effect.  The Company  will also take such action as may be
         appropriate  under,  or to ensure  compliance  with,  the securities or
         "blue  sky"  laws  of  the  various  states  in  connection   with  the
         exercisability  of the Rights.  Notwithstanding  any  provision of this
         Agreement to the contrary,  the Rights shall not be  exercisable in any
         jurisdiction,  unless the requisite  qualification in such jurisdiction
         shall have been obtained, or an exemption therefrom shall be available,
         and until a registration statement has been declared effective.

         (d) The Company  covenants and agrees that it will take all such action
         as may be necessary to ensure that all Preferred  Shares delivered upon
         exercise of Rights shall,  at the time of delivery of the  certificates
         for such Preferred  Shares (subject to payment of the Purchase  Price),
         be  duly  and  validly   authorized  and  issued  and  fully  paid  and
         nonassessable.

         (e) The Company further  covenants and agrees that it will pay when due
         and payable any and all  federal and state  transfer  taxes and charges
         which may be payable in respect of the original issuance or delivery of
         the Rights  Certificates or of certificates  for Preferred  Shares upon
         the exercise of Rights. The Company shall not, however,  be required to
         pay any transfer tax which may be payable in respect of any transfer or
         delivery of Rights Certificates to a person other than, or the issuance
         or delivery of certificates or depositary receipts for Preferred Shares
         in a name  other  than that of,  the  registered  holder of the  Rights
         Certificate  evidencing Rights  surrendered for exercise or to issue or
         to deliver any certificates or depositary receipts for Preferred Shares
         upon the exercise of any Rights until any such tax shall have been paid
         (any such tax being payable by the holder of such Rights Certificate at
         the  time  of  surrender)  or  until  it has  been  established  to the
         Company's satisfaction that no such tax is due.

         Section 10. Preferred Shares Record Date. Each person in whose name any
certificate  for a number of one  one-hundredths  of a Preferred Share is issued
upon the  exercise of Rights shall for all purposes be deemed to have become the
holder of record of such  Preferred  Shares  represented  thereby  on,  and such
certificate  shall  be  dated,  the  date  upon  which  the  Rights  Certificate
evidencing  such Rights was duly  surrendered  and payment of the Purchase Price
multiplied by the number of one one-hundredths of a Preferred Share with respect
to which the Rights have been exercised (and any applicable  transfer taxes) was
made;  provided,  however,  that if the date of such  surrender and payment is a
date upon which the Preferred  Shares  transfer books of the Company are closed,
such person shall be deemed to have become the record  holder of such shares on,
and such certificate  shall be dated, the next succeeding  Business Day on which
the  Preferred  Shares  transfer  books of the  Company  are open.  Prior to the
exercise of the Rights  evidenced  thereby,  the holder of a Rights  Certificate
shall not be  entitled to any rights of a holder of  Preferred  Shares for which
the Rights shall be exercisable,  including,  without  limitation,  the right to
vote, to receive dividends or other  distributions or to exercise any preemptive
rights,  and shall not be entitled to receive any notice of any  proceedings  of
the Company, except as provided herein.
<PAGE>
         Section 11. Adjustment of Purchase Price, Number of Shares or Number of
Rights.  The  Purchase  Price,  the number and kind of shares or other  property
covered  by each  Right and the  number of Rights  outstanding  are  subject  to
adjustment from time to time as provided in this Section 11.

         (a) (i) In the event the  Company  shall at any time  after the date of
         this  Agreement (A) declare a dividend on the Common Shares  payable in
         Common Shares, (B) subdivide the outstanding Common Shares, (C) combine
         the  outstanding  Common  Shares (by reverse  stock split or otherwise)
         into a smaller number of Common Shares,  or (D) issue any shares of its
         capital stock in a reclassification of the Common Shares (including any
         such  reclassification  in connection with a consolidation or merger in
         which the Company is the continuing or surviving corporation), then, in
         each such event, except as otherwise provided in this Section 11(a) and
         Section 7(e) hereof:  (1) each of the Rights outstanding at the time of
         the  record  date  for  such  dividend  or the  effective  date of such
         subdivision,  combination or reclassification  shall be proportionately
         adjusted  to that  number  of Rights  (calculated  to the  nearest  one
         ten-thousandth of a Right) equal to a fraction (the "Exchange  Ratio"),
         the  numerator of which shall be the total  number of Common  Shares or
         shares of capital stock issued in such  reclassification  of the Common
         Shares outstanding  immediately following such time and the denominator
         of  which  shall be the  total  number  of  Common  Shares  outstanding
         immediately  prior to such time,  and the  number of Rights  that shall
         thereafter be issued with respect to each Common Share or share of such
         other capital stock that shall become  outstanding  thereafter prior to
         the Distribution Date shall be equal to the total number of outstanding
         Rights  immediately  after such  event (as  adjusted  pursuant  to this
         clause (1)) divided by the total number of outstanding Common Shares or
         shares  of such  other  capital  stock  immediately  after  such  event
         (subject  to further  adjustment  pursuant  to the  provisions  of this
         Agreement);  (2) the Purchase Price in effect at the time of the record
         date for such  dividend or of the effective  date of such  subdivision,
         combination or reclassification  shall be adjusted so that the Purchase
         Price  thereafter  shall  equal the result  obtained  by  dividing  the
         Purchase Price in effect immediately prior to such time by the Exchange
         Ratio;  provided,  however, that in no event shall the consideration to
         be paid upon the exercise of one Right be less than the  aggregate  par
         value of the  shares of  capital  stock of the  Company  issuable  upon
         exercise  of such  Right;  and (3) the  number of  Preferred  Shares or
         shares of such other capital  stock  issuable upon the exercise of each
         Right shall remain unchanged  immediately after such event, but, in the
         event of a  reclassification,  the  kind of  shares  issuable  upon the
         exercise of each Right immediately after such reclassification shall be
         appropriately  adjusted.  If an event  occurs  which  would  require an
         adjustment  under both this  Section  11(a)(i)  and  Section  11(a)(ii)
         hereof,  the adjustment  provided for in this Section 11(a)(i) shall be
         in  addition  to, and shall be made prior to, any  adjustment  required
         pursuant to Section 11(a)(ii) hereof.
<PAGE>
         (ii) Subject to Section 24 of this Agreement, in the event a Triggering
         Event shall have  occurred,  then promptly  following  such  Triggering
         Event,  proper  provision shall be made so that each holder of a Right,
         except as provided in Section 7(e) hereof,  shall  thereafter  have the
         right to receive for each Right,  upon  exercise  thereof in accordance
         with the terms of this Agreement and payment of the then-current  Total
         Exercise  Price,  in  lieu  of a  number  of  one  one-hundredths  of a
         Preferred  Share,  such number of Common Shares of the Company as shall
         equal the result  obtained by  multiplying  the  then-current  Purchase
         Price by the then number of one one-hundredths of a Preferred Share for
         which a Right was  exercisable  (or would have been  exercisable if the
         Distribution  Date  had  occurred)   immediately  prior  to  the  first
         occurrence of a Triggering  Event,  and dividing that product by 50% of
         the  current per share  market  price  (determined  pursuant to Section
         11(d)  hereof)  for  Common  Shares  on the date of  occurrence  of the
         Triggering Event (such number of shares being  hereinafter  referred to
         as the "Adjustment Shares").

         (iii) The right to buy Common Shares of the Company pursuant to Section
         11(a)(ii)  hereof shall not arise as a result of any Person becoming an
         Acquiring  Person through an acquisition of Common Shares pursuant to a
         Permitted Offer.

         (iv) In lieu of  issuing  Common  Shares  in  accordance  with  Section
         11(a)(ii) hereof, the Company may, if the Board of Directors determines
         that such action is  necessary or  appropriate  and not contrary to the
         interest  of  holders of Rights  (and,  in the event that the number of
         Common  Shares which are  authorized by the  Company's  Certificate  of
         Incorporation but not outstanding or reserved for issuance for purposes
         other than upon exercise of the Rights are not sufficient to permit the
         exercise in full of the Rights, or if any necessary regulatory approval
         for such  issuance has not been  obtained by the  Company,  the Company
         shall):  (A) determine the excess of (1) the value of the Common Shares
         issuable  upon the exercise of a Right (the  "Current  Value") over (2)
         the Purchase Price (such excess,  the "Spread") and (B) with respect to
         each Right,  make  adequate  provision  to  substitute  for such Common
         Shares,  upon exercise of the Rights,  (1) cash, (2) a reduction in the
         Purchase Price, (3) other equity securities of the Company  (including,
         without  limitation,  shares  or  units  of  shares  of any  series  of
         preferred  stock which the Board of Directors of the Company has deemed
         to have the same value as Common Shares (such shares or units of shares
         of preferred  stock are herein  called  "common  stock  equivalents")),
         except to the extent that the Company has not  obtained  any  necessary
         stockholder  or  regulatory  approval  for  such  issuance,   (4)  debt
         securities  of the  Company,  except to the extent that the Company has
         not obtained any necessary  stockholder or regulatory approval for such
         issuance,  (5) other assets,  or (6) any  combination of the foregoing,
         having an  aggregate  value  equal to the  Current  Value,  where  such
         aggregate  value has been  determined  by the Board of Directors of the
         Company  based upon the advice of a  nationally  recognized  investment
         banking  firm  selected  by the  Board  of  Directors  of the  Company;
         provided,  however,  if  the  Company  shall  not  have  made  adequate
         provision to deliver  value  pursuant to clause (B) above within thirty
<PAGE>
         (30)  days  following  the  later  of (x)  the  first  occurrence  of a
         Triggering  Event  and (y) the date on  which  the  Company's  right of
         redemption  pursuant to Section 23(a) expires (the later of (x) and (y)
         being referred to herein as the "Section 11(a)(ii) Trigger Date"), then
         the Company  shall be  obligated  to deliver,  upon the  surrender  for
         exercise  of a Right and  without  requiring  payment  of the  Purchase
         Price,  Common Shares (to the extent  available),  except to the extent
         that  the  Company  has  not  obtained  any  necessary  stockholder  or
         regulatory  approval for such issuance,  and then, if necessary,  cash,
         which shares  and/or cash have an aggregate  value equal to the Spread.
         If the Board of Directors of the Company shall  determine in good faith
         that it is likely that  sufficient  additional  Common  Shares could be
         authorized for issuance upon exercise in full of the Rights or that any
         necessary  regulatory approval for such issuance will be obtained,  the
         thirty  (30) day period set forth  above may be  extended to the extent
         necessary,  but not more  than  ninety  (90)  days  after  the  Section
         11(a)(ii)  Trigger Date, in order that the Company may seek stockholder
         approval for the authorization of such additional shares or take action
         to obtain such regulatory approval (such period, as it may be extended,
         the "Substitution  Period").  To the extent that the Company determines
         that some action  need be taken  pursuant  to the first  and/or  second
         sentences of this  Section  11(a)(iv),  the Company (x) shall  provide,
         subject to Section 7(e) hereof,  that such action shall apply uniformly
         to all outstanding Rights and (y) may suspend the exercisability of the
         Rights until the expiration of the Substitution Period in order to seek
         any  authorization of additional  shares,  to take any action to obtain
         any required  regulatory approval and/or to decide the appropriate form
         of  distribution  to be made  pursuant  to such first  sentence  and to
         determine the value thereof.  In the event of any such suspension,  the
         Company   shall   issue  a  public   announcement   stating   that  the
         exercisability of the Rights has been temporarily suspended, as well as
         a public  announcement  at such time as the  suspension is no longer in
         effect. For purposes of this Section 11(a)(iv), the value of the Common
         Shares  shall be the  current  per share  market  price (as  determined
         pursuant to Section  11(d)  hereof) of the Common Shares on the Section
         11(a)(ii)  Trigger Date and the value of any "common stock  equivalent"
         shall be deemed  to have the same  value as the  Common  Shares on such
         date.

         (b) In case  the  Company  shall,  at any time  after  the date of this
         Agreement,  fix a record date for the  issuance  of rights,  options or
         warrants to all  holders of Common  Shares or of any class or series of
         Equivalent  Shares entitling such holders (for a period expiring within
         forty-five  (45) calendar days after such record date) to subscribe for
         or  purchase   Common  Shares  or   Equivalent   Shares  or  securities
         convertible  into  Common  Shares or  Equivalent  Shares at a price per
         share  (or  having  a  conversion   price  per  share,  if  a  security
         convertible into Common Shares or Equivalent Shares) less than the then
         current  per share  market  price of the  Common  Shares or  Equivalent
         Shares (as defined in Section 11(d)) on such record date, then, in each
         such case,  the  Purchase  Price to be in effect after such record date
         shall be  determined  by  multiplying  the  Purchase  Price  in  effect
         immediately  prior to such record date by a fraction,  the numerator of
         which shall be the number of Common  Shares and  Equivalent  Shares (if
         any)  outstanding on such record date, plus the number of Common Shares
<PAGE>
         or Equivalent  Shares, as the case may be, which the aggregate offering
         price of the total number of Common Shares or Equivalent Shares, as the
         case may be, so to be offered (and/or the aggregate initial  conversion
         price of the convertible securities so to be offered) would purchase at
         such current  market price,  and the  denominator of which shall be the
         number of Common Shares and Equivalent  Shares (if any)  outstanding on
         such  record  date,  plus the  number of  additional  Common  Shares or
         Equivalent  Shares,  as the case may be, to be offered for subscription
         or purchase (or into which the convertible  securities so to be offered
         are initially convertible). In case such subscription price may be paid
         in a  consideration  part or all of which shall be in a form other than
         cash,  the value of such  consideration  shall be as determined in good
         faith by the Board of  Directors of the  Company,  whose  determination
         shall be described in a statement filed with the Rights Agent and shall
         be binding on the Rights  Agent and the holders of the  Rights.  Common
         Shares and  Equivalent  Shares  owned by or held for the account of the
         Company  shall not be deemed  outstanding  for the  purpose of any such
         computation. Such adjustment shall be made successively whenever such a
         record  date is fixed,  and in the event that such  rights,  options or
         warrants are not so issued,  the Purchase Price shall be adjusted to be
         the  Purchase  Price  which would then be in effect if such record date
         had not been fixed.

         (c) In case  the  Company  shall,  at any time  after  the date of this
         Agreement,  fix a record date for the making of a  distribution  to all
         holders  of the Common  Shares or of any class or series of  Equivalent
         Shares  (including  any such  distribution  made in  connection  with a
         consolidation  or merger  in which the  Company  is the  continuing  or
         surviving  corporation)  of evidences of  indebtedness or assets (other
         than a regular  quarterly cash dividend,  if any, or a dividend payable
         in  Common  Shares)  or  subscription   rights,   options  or  warrants
         (excluding  those  referred to in Section  11(b)),  then,  in each such
         case,  the Purchase  Price to be in effect after such record date shall
         be determined by multiplying  the Purchase Price in effect  immediately
         prior to such record date by a fraction,  the  numerator of which shall
         be the current  market price (as  determined  pursuant to Section 11(d)
         hereof) of a Common Share or an Equivalent  Shares on such record date,
         less the fair market value (as determined in good faith by the Board of
         Directors of the Company,  whose  determination shall be described in a
         statement  filed  with the  Rights  Agent) of the  portion of the cash,
         assets or evidences of  indebtedness  so to be  distributed  or of such
         subscription  rights  or  warrants  applicable  to a  Common  Share  or
         Equivalent  Shares,  as the case may be, and the  denominator  of which
         shall be such current market price (as  determined  pursuant to Section
         11(d)  hereof) of a Common  Share or  Equivalent  Shares on such record
         date.  Such  adjustments  shall be made  successively  whenever  such a
         record date is fixed, and in the event that such distribution is not so
         made,  the Purchase  Price shall be adjusted to be the  Purchase  Price
         which would have been in effect if such record date had not been fixed.
<PAGE>
         (d)  For  the  purpose  of  any  computation   hereunder,   other  than
         computations made pursuant to Section  11(a)(iv)  hereof,  the "current
         per share market price" of any security (a  "Security"  for the purpose
         of this Section 11(d)) on any date shall be deemed to be the average of
         the daily closing prices per share of such Security for the thirty (30)
         consecutive  Trading  Days  (as  such  term  is  hereinafter   defined)
         immediately  prior to such date, and for purposes of computations  made
         pursuant to Section  11(a)(iv)  hereof,  the  "current per share market
         price" of any Security on any date shall be deemed to be the average of
         the daily  closing  prices per share of such  Security for the ten (10)
         consecutive  Trading  Days  immediately  prior to such date;  provided,
         however,  that in the event that the current per share  market price of
         the Security is determined  during a period  following the announcement
         by the issuer of such  Security  of (i) a dividend or  distribution  on
         such  Security  payable  in  shares  of  such  Security  or  securities
         convertible  into such shares or (ii) any  subdivision,  combination or
         reclassification  of such Security,  and prior to the expiration of the
         requisite thirty (30) Trading Day or ten (10) Trading Day period, after
         the ex-dividend date for such dividend or  distribution,  or the record
         date for such subdivision,  combination or reclassification,  then, and
         in each  such  case,  the  current  per  share  market  price  shall be
         appropriately  adjusted to reflect the current  market  price per share
         equivalent  of such  Security.  The closing price for each day shall be
         the last sale price,  regular way, or, in case no such sale takes place
         on such day, the average of the closing bid and asked  prices,  regular
         way,  in  either  case  as  reported  in  the  principal   consolidated
         transaction  reporting  system  with  respect to  securities  listed or
         admitted to trading on the New York Stock  Exchange or, if the Security
         is not listed or admitted to trading on the New York Stock Exchange, as
         reported in the principal  consolidated  transaction  reporting  system
         with respect to securities listed on the principal national  securities
         exchange on which the  Security is listed or admitted to trading or, if
         the  Security  is not listed or  admitted  to  trading on any  national
         securities exchange, the last sale price or, if such last sale price is
         not  reported,  the average of the high bid and low asked prices in the
         over-the-counter  market,  as reported  by Nasdaq or such other  system
         then in use,  or, if on any such date the Security is not quoted by any
         such  organization,  the average of the closing bid and asked prices as
         furnished  by a  professional  market  maker  making  a  market  in the
         Security  selected by the Board of Directors of the Company.  If on any
         such date no market maker is making a market in the Common Shares,  the
         fair value of such shares on such date as  determined  in good faith by
         the Board of Directors of the Company shall be used.  The term "Trading
         Day"  shall  mean a day on  which  the  principal  national  securities
         exchange on which the Security is listed or admitted to trading is open
         for the  transaction  of business  or, if the Security is not listed or
         admitted to trading on any  national  securities  exchange,  a Business
         Day. If the Common Shares are not publicly held or so listed or traded,
         "current per share market price" shall mean the fair value per share as
         determined  in good  faith by the Board of  Directors  of the  Company,
         whose  determination  shall be described in a statement  filed with the
         Rights Agent and shall be conclusive for all purposes.
<PAGE>
         (e) Anything herein to the contrary  notwithstanding,  no adjustment in
         the  Purchase  Price shall be required  unless  such  adjustment  would
         require an increase or decrease of at least 1% in the  Purchase  Price;
         provided, however, that any adjustments which by reason of this Section
         11(e) are not  required  to be made shall be carried  forward and taken
         into account in any subsequent adjustment.  All calculations under this
         Section  11 shall  be made to the  nearest  ten-thousandth  of a Common
         Share or other share or  ten-thousandth  of a Preferred  Share,  as the
         case may be.  Notwithstanding the first sentence of this Section 11(e),
         any adjustment  required by this Section 11 shall be made no later than
         the  earlier  of (i) three (3) years  from the date of the  transaction
         which requires such adjustment or (ii) the Expiration Date.

         (f) If as a result of an  adjustment  made pursuant to Section 11(a) or
         13(a) hereof, the holder of any Right thereafter exercised shall become
         entitled  to receive any shares of capital  stock other than  Preferred
         Shares,  thereafter the number of such other shares so receivable  upon
         exercise of any Right and if  required,  the  Purchase  Price  thereof,
         shall be  subject  to  adjustment  from time to time in a manner and on
         terms as  nearly  equivalent  as  practicable  to the  provisions  with
         respect to the Common  Shares  contained in Sections  11(a),  (b), (c),
         (e), (h), (i), (j), (k), (l) and (m), and the provisions of Sections 7,
         9, 10, 13 and 14 with  respect to the  Preferred  Shares shall apply on
         like terms to any such other shares.

         (g) All  Rights  originally  issued by the  Company  subsequent  to any
         adjustment  made to the Purchase  Price  hereunder  shall  evidence the
         right to purchase,  at the adjusted  Purchase Price,  the number of one
         one-hundredths  of a  Preferred  Share  purchasable  from  time to time
         hereunder  upon  exercise  of  the  Rights,   all  subject  to  further
         adjustment as provided herein.

         (h) Unless the Company shall have exercised its election as provided in
         Section 11(i),  upon each  adjustment of the Purchase Price as a result
         of the  calculations  made in Section  11(b),  each  Right  outstanding
         immediately  prior to the making of such  adjustment  shall  thereafter
         evidence the right to purchase,  at the adjusted  Purchase Price,  that
         number  of   Preferred   Shares   (calculated   to  the   nearest   one
         ten-thousandth  of a share)  obtained by (i) multiplying (x) the number
         of  Preferred  Shares  covered  by a Right  immediately  prior  to this
         adjustment,  by (y) the Purchase Price in effect  immediately  prior to
         such adjustment of the Purchase Price, and (ii) dividing the product so
         obtained  by the  Purchase  Price  in  effect  immediately  after  such
         adjustment of the Purchase Price.

         (i) The Company may elect on or after the date of any adjustment of the
         Purchase Price as a result of the calculations made in Section 11(b) to
         adjust the number of Rights,  in substitution for any adjustment in the
         number of Preferred  Shares  purchasable  upon the exercise of a Right.
         Each of the Rights  outstanding  after such adjustment of the number of
         Rights shall be exercisable for the number of one  one-hundredths  of a
         Preferred Share for which a Right was exercisable  immediately prior to
         such adjustment.  Each Right held of record prior to such adjustment of
         the number of Rights shall become that number of Rights  (calculated to
<PAGE>
         the nearest one  ten-thousandth  of a Right)  obtained by dividing  the
         Purchase  Price  in  effect  immediately  prior  to  adjustment  of the
         Purchase  Price by the  Purchase  Price  in  effect  immediately  after
         adjustment  of the  Purchase  Price.  The  Company  shall make a public
         announcement of its election to adjust the number of Rights, indicating
         the record  date for the  adjustment,  and,  if known at the time,  the
         amount of the  adjustment to be made.  This record date may be the date
         on which the Purchase Price is adjusted or any day thereafter,  but, if
         the Rights  Certificates  have been issued,  shall be at least ten (10)
         days  later  than  the  date  of the  public  announcement.  If  Rights
         Certificates  have been issued,  upon each  adjustment of the number of
         Rights  pursuant to this Section 11(i),  the Company shall, as promptly
         as practicable,  cause to be distributed to holders of record of Rights
         Certificates  on  such  record  date  Rights  Certificates  evidencing,
         subject  to  Section 14  hereof,  the  additional  Rights to which such
         holders  shall be entitled as a result of such  adjustment,  or, at the
         option of the Company, shall cause to be distributed to such holders of
         record in substitution and replacement for the Rights Certificates held
         by such holders  prior to the date of  adjustment,  and upon  surrender
         thereof, if required by the Company, new Rights Certificates evidencing
         all the  Rights to which  such  holders  shall be  entitled  after such
         adjustment.  Rights  Certificates so to be distributed shall be issued,
         executed and  countersigned  in the manner provided for herein (and may
         bear, at the option of the Company,  the adjusted  Purchase  Price) and
         shall be  registered  in the names of the  holders  of record of Rights
         Certificates on the record date specified in the public announcement.

         (j)  Irrespective  of any adjustment or change in the Purchase Price or
         the  number of  Preferred  Shares  issuable  upon the  exercise  of the
         Rights, the Rights  Certificates  theretofore and thereafter issued may
         continue  to express  the  Purchase  Price per one  one-hundredth  of a
         Preferred  Share and the number of one  one-hundredths  of a  Preferred
         Share which were  expressed in the initial Rights  Certificates  issued
         hereunder.

         (k) Before  taking any action that would cause an  adjustment  reducing
         the Purchase Price below the par or stated value, if any, of the number
         of one  one-hundredths  of a Preferred  Share issuable upon exercise of
         the Rights,  the Company shall take any corporate  action which may, in
         the opinion of its counsel,  be necessary in order that the Company may
         validly and legally issue as fully paid and  nonassessable  shares such
         number of one  one-hundredths  of a  Preferred  Share at such  adjusted
         Purchase Price.

         (l) In any  case  in  which  this  Section  11  shall  require  that an
         adjustment in the Purchase  Price be made effective as of a record date
         for a  specified  event,  the  Company  may  elect to defer  until  the
         occurrence  of such  event  the  issuing  to the  holder  of any  Right
         exercised after such record date of the number of one one-hundredths of
         a Preferred Share and other capital stock or securities of the Company,
         if any,  issuable  upon such  exercise over and above the number of one
         one-hundredths  of  a  Preferred  Share  and  other  capital  stock  or
         securities of the Company,  if any,  issuable upon such exercise on the
         basis  of the  Purchase  Price  in  effect  prior  to such  adjustment;
         provided,  however, that the Company shall deliver to such holder a due
         bill or other appropriate  instrument evidencing such holder's right to
         receive such  additional  shares  (fractional  or  otherwise)  upon the
         occurrence of the event requiring such adjustment.
<PAGE>
         (m) Anything in this Section 11 to the contrary notwithstanding,  prior
         to the  Distribution  Date,  the Company shall be entitled to make such
         reductions  in the  Purchase  Price,  in addition to those  adjustments
         expressly  required by this Section 11, as and to the extent that it in
         its sole  discretion  shall determine to be advisable in order that any
         (i)  consolidation  or  subdivision  of the Preferred or Common Shares,
         (ii) issuance wholly for cash of any Preferred or Common Shares at less
         than the  current  market  price,  (iii)  issuance  wholly  for cash of
         Preferred  or Common  Shares  or  securities  which by their  terms are
         convertible into or exchangeable  for Preferred or Common Shares,  (iv)
         stock  dividends,  or (v)  issuance  of  rights,  options  or  warrants
         referred  to in this  Section  11,  hereafter  made by the  Company  to
         holders of its  Preferred or Common Shares shall not be taxable to such
         stockholders.

         (n) The  Company  covenants  and agrees  that it shall not, at any time
         after the Distribution  Date,  effect or permit to occur any Triggering
         Event or Section 13 Event, if (i) at the time or immediately after such
         Triggering Event or Section 13 Event there are any rights,  warrants or
         other  instruments  or securities  outstanding  or agreements in effect
         which would substantially  diminish or otherwise eliminate the benefits
         intended to be afforded by the Rights or (ii) prior to,  simultaneously
         with or immediately  after such Section 13 Event,  the  stockholders of
         the Person who constitutes,  or would constitute, the "Principal Party"
         for purposes of Section 13(b) hereof shall have received a distribution
         of Rights  previously owned by such Person or any of its Affiliates and
         Associates.

         (o) The Company covenants and agrees that, after the Distribution Date,
         it will not, except as permitted by Sections 23, 24 or 27 hereof,  take
         (or permit to be taken) any action if at the time such  action is taken
         it  is   reasonably   foreseeable   that  such  action  will   diminish
         substantially  or  otherwise  eliminate  the  benefits  intended  to be
         afforded by the Rights.

         (p) Anything in this Agreement to the contrary notwithstanding,  in the
         event the  Company  shall at any time after the date of this  Agreement
         (A) declare a dividend on the  Preferred  Shares  payable in  Preferred
         Shares, (B) subdivide the outstanding Preferred Shares, (C) combine the
         outstanding Preferred Shares (by reverse stock split or otherwise) into
         a smaller  number of Preferred  Shares,  or (D) issue any shares of its
         capital stock in a reclassification  of the Preferred Shares (including
         any such  reclassification in connection with a consolidation or merger
         in which the Company is the continuing or surviving corporation), then,
         in each such event, except as otherwise provided in this Section 11 and
         Section 7(e) hereof:  (1) each of the Rights outstanding at the time of
         the  record  date  for  such  dividend  or the  effective  date of such
         subdivision,  combination or reclassification  shall be proportionately
         adjusted  to that  number  of Rights  (calculated  to the  nearest  one
         ten-thousandth   of  a  Right)  equal  to  a  fraction  (the  "Exchange
         Fraction"),  the  numerator  of which  shall  be the  total  number  of
<PAGE>
         Preferred   Shares  or  shares  of   capital   stock   issued  in  such
         reclassification  of  the  Preferred  Shares  outstanding   immediately
         following  such time and the  denominator  of which  shall be the total
         number of Preferred Shares outstanding  immediately prior to such time,
         and the number of Rights that shall  thereafter  be issued with respect
         to each  Common  Share or share of other  capital  stock  that shall be
         issued  in a  reclassification  of  the  Common  Shares  prior  to  the
         Distribution  Date  shall be equal to the total  number of  outstanding
         Rights  immediately  after such  event (as  adjusted  pursuant  to this
         clause (1)) divided by the total number of outstanding Common Shares or
         shares  of such  other  capital  stock  immediately  after  such  event
         (subject  to further  adjustment  pursuant  to the  provisions  of this
         Agreement);  (2) the Purchase Price in effect at the time of the record
         date for such  dividend or of the effective  date of such  subdivision,
         combination or reclassification  shall be adjusted so that the Purchase
         Price  thereafter  shall  equal the result  obtained  by  dividing  the
         Purchase Price in effect immediately prior to such time by the Exchange
         Fraction;  provided,  however, that in no event shall the consideration
         to be paid upon the  exercise  of one Right be less than the  aggregate
         par value of the shares of capital  stock of the Company  issuable upon
         exercise of such Right; and (3) the number of one  one-hundredths  of a
         Preferred  Share or share of such other capital stock issuable upon the
         exercise of each Right shall remain  unchanged  immediately  after such
         event,  but,  in the  event of a  reclassification,  the kind of shares
         issuable  upon  the  exercise  of each  Right  immediately  after  such
         reclassification  shall be  adjusted  to be the kind of  shares of such
         other  capital  stock  issued  in such  reclassification,  rather  than
         Preferred Shares.

         Section 12. Certificate of Adjusted Purchase Price or Number of Shares.
Whenever an  adjustment  is made as  provided in Sections 11 and 13 hereof,  the
Company shall promptly (a) prepare a certificate  setting forth such  adjustment
and a brief statement of the facts accounting for such adjustment, (b) file with
the Rights Agent and with each transfer agent for the Preferred Shares a copy of
such certificate and (c) mail a brief summary thereof to each holder of a Rights
Certificate in accordance with Section 26 hereof.  Notwithstanding the foregoing
sentence,  the  failure of the Company to make such  certification  or give such
notice shall not affect the validity of such  adjustment  or the force or effect
of the  requirement  for  such  adjustment.  The  Rights  Agent  shall  be fully
protected in relying on any such  certificate  and on any  adjustment  contained
therein and shall not be deemed to have knowledge of such adjustment  unless and
until it shall have received such certificate.

         Section  13.  Consolidation,  Merger or Sale or  Transfer  of Assets or
Earning Power.

         (a) In the event that,  following the Shares Acquisition Date, directly
         or indirectly:

               (i) the Company shall  consolidate  with, or merge with and into,
               any other  Person  (other than a  Subsidiary  of the Company in a
               transaction the principal purpose of which is to change the state
               of  incorporation  of the Company or which  complies with Section
               11(o) hereof);
<PAGE>
               (ii) any Person  (other  than a  Subsidiary  of the  Company in a
               transaction  that  complies  with  Section  11(o)  hereof)  shall
               consolidate with the Company,  or merge with and into the Company
               and the Company shall be the continuing or surviving  corporation
               of such consolidation or merger; or

               (iii) the Company  shall sell or  otherwise  transfer  (or one or
               more of its Subsidiaries  shall sell or otherwise  transfer),  in
               one or more transactions, assets or earning power aggregating 50%
               or more of the assets or  earning  power of the  Company  and its
               Subsidiaries  (taken as a whole) to any other  Person or  Persons
               (other  than  the  Company  or one or  more of its  wholly  owned
               Subsidiaries in one or more transactions,  each of which complies
               with Section 11(o) hereof),  then, and in each such case,  proper
               provision shall be made so that:

                  (A) each  holder  of a Right  (except  as  otherwise  provided
                  herein) shall  thereafter have the right to receive,  upon the
                  exercise   thereof  in  accordance  with  the  terms  of  this
                  Agreement, such number of validly authorized and issued, fully
                  paid and  nonassessable  and freely tradeable Common Shares of
                  the  Principal  Party (as  hereinafter  defined),  free of any
                  liens, encumbrances,  rights of first refusal or other adverse
                  claims,  as  shall  be equal  to the  result  obtained  by (1)
                  multiplying  the then current  Purchase Price by the number of
                  one  one-hundredths of a Preferred Share for which a Right was
                  exercisable  immediately  prior to the first  occurrence  of a
                  Section 13 Event (or, if a Triggering Event has occurred prior
                  to the first occurrence of a Section 13 Event, multiplying the
                  number of such one  one-hundredths  of a  Preferred  Share for
                  which a Right was exercisable  immediately  prior to the first
                  occurrence  of a  Triggering  Event by the  Purchase  Price in
                  effect  immediately prior to such first  occurrence),  and (2)
                  dividing that product (which,  following the first  occurrence
                  of a Section  13 Event,  shall be  referred  to as the  "Total
                  Exercise  Price" for each Right and for all  purposes  of this
                  Agreement)  by 50% of  the  current  per  share  market  price
                  (determined  pursuant to Section  11(d)  hereof) of the Common
                  Shares of such Principal  Party on the date of consummation of
                  such Section 13 Event;

                  (B) such Principal  Party shall  thereafter be liable for, and
                  shall  assume,  by virtue of such  Section  13 Event,  all the
                  obligations  and  duties  of  the  Company  pursuant  to  this
                  Agreement;

                  (C) the term "Company" shall  thereafter be deemed to refer to
                  such Principal Party, it being specifically  intended that the
                  provisions  of  Section  11 hereof  shall  apply  only to such
                  Principal Party following the first occurrence of a Section 13
                  Event; and

                  (D) such Principal Party shall take such steps (including, but
                  not limited to, the reservation of a sufficient  number of its
                  Common Shares) in connection with the consummation of any such
                  transaction  as may be necessary to assure that the provisions
                  hereof shall thereafter be applicable, as nearly as reasonably
                  may  be,  in   relation  to  its  Common   Shares   thereafter
                  deliverable upon the exercise of the Rights.
<PAGE>
         (b)  "Principal  Party"  shall  mean,  in the  case of any  transaction
         described in clause (i), (ii) or (iii) of Section 13(a),  the Person or
         Acquiring  Person  referred to therein (or such  Person's or  Acquiring
         Person's successor, including, if applicable, the Company, if it is the
         surviving corporation),  provided,  however, that in any such case: (i)
         if the  Common  Shares  of such  Person is not at such time and has not
         been continuously  over the preceding  12-month period registered under
         Section 12 of the Exchange Act, and such Person is a direct or indirect
         Subsidiary of another Person the Common Shares of which is and has been
         so registered,  "Principal Party" shall refer to such other Person; and
         (ii) if such Person is a Subsidiary,  directly or  indirectly,  of more
         than one  Person,  "the  Common  Shares of two or more of which are and
         have been so registered,  Principal  Party" shall refer to whichever of
         such  Persons is the issuer of the Common  Shares  having the  greatest
         aggregate  market value,  and provided,  further,  that for purposes of
         transactions described in clause (iii) hereof,  "Principal Party" shall
         refer to that Person  receiving  the greatest  portion of the assets or
         earning power transferred pursuant to such transaction or transactions.

         (c) If, for any  reason,  the  Rights  cannot be  exercised  for Common
         Shares of such Principal Party as provided in Section 13(a),  then each
         holder of Rights  shall have the right to exchange  its Rights for cash
         from such  Principal  Party in an amount  equal to the number of Common
         Shares that it would otherwise be entitled to purchase times 50% of the
         current per share market price, as determined pursuant to Section 11(d)
         hereof,  of such Common  Shares of such  Principal  Party.  If, for any
         reason,  the foregoing  formulation  cannot be applied to determine the
         cash amount into which the Rights are  exchangeable,  then the Board of
         Directors,  based upon the advice of one or more nationally  recognized
         investment  banking  firms,  and  based  upon  the  total  value of the
         Company,  shall determine such amount reasonably and with good faith to
         the  holders  of  Rights.  Any such  determination  shall be final  and
         binding on the Rights Agent.

         (d) Notwithstanding anything in this Agreement to the contrary, Section
         13 shall not be applicable  to a  transaction  described in clauses (i)
         and (ii) of Section 13(a) if: (i) such  transaction is consummated with
         a Person or Persons who acquired  Common Shares pursuant to a Permitted
         Offer (or a  wholly-owned  Subsidiary  of any such Person or  Persons);
         (ii) the price per share of Common Shares  offered in such  transaction
         is not less  than the price  per  share of  Common  Shares  paid to all
         holders of Common Shares whose shares were  purchased  pursuant to such
         Permitted Offer;  and (iii) the form of consideration  being offered to
         the remaining  holders of Common Shares pursuant to such transaction is
         the  same  form as the  form of  consideration  paid  pursuant  to such
         Permitted Offer. Upon consummation of any such transaction contemplated
         by this Section 13(d), all Rights hereunder shall expire.

         (e) The Company  shall not  consummate  any Section 13 Event unless the
         Principal  Party shall have a sufficient  number of  authorized  Common
         Shares that have not been issued or reserved for issuance to permit the
         exercise in full of the Rights in  accordance  with this Section 13 and
         unless prior  thereto the Company and such issuer  shall have  executed
         and delivered to the Rights Agent a supplemental  agreement  confirming
         that such Principal Party shall,  upon  consummation of such Section 13
         Event,  assume this Agreement in accordance with Sections 13(a) and (b)
<PAGE>
         hereof,  that all  rights  of first  refusal  or  preemptive  rights in
         respect of the issuance of Common Shares of such  Principal  Party upon
         exercise  of  outstanding  Rights have been  waived,  that there are no
         rights,   warrants,   instruments  or  securities  outstanding  or  any
         agreements or arrangements  which,  as a result of the  consummation of
         such  transaction,   would  eliminate  or  substantially  diminish  the
         benefits   intended  to  be  afforded  by  the  Rights  and  that  such
         transaction shall not result in a default by such Principal Party under
         this  Agreement,  and further  providing  that, as soon as  practicable
         after the date of such Section 13 Event, such Principal Party will:

               (i)  prepare  and  file  a  registration   statement   under  the
               Securities  Act with  respect to the  Rights  and the  securities
               purchasable  upon exercise of the Rights on an appropriate  form,
               use its best  efforts to cause  such  registration  statement  to
               become effective as soon as practicable after such filing and use
               its best efforts to cause such  registration  statement to remain
               effective   (with  a   prospectus   at  all  times   meeting  the
               requirements  of the Securities  Act) until the Expiration  Date,
               and similarly comply with applicable state securities laws;

               (ii) use its best  efforts to list (or  continue  the listing of)
               the Rights and the  securities  purchasable  upon exercise of the
               Rights  on  a  national   securities  exchange  or  to  meet  the
               eligibility requirements for quotation on Nasdaq; and

               (iii)  deliver  to holders  of the  Rights  historical  financial
               statements for such Principal  Party which comply in all respects
               with  the  requirements  for  registration  on  Form  10 (or  any
               successor form) under the Exchange Act.

         In the event  that at any time  after the  occurrence  of a  Triggering
         Event some or all of the Rights  shall not have been  exercised  at the
         time of a  transaction  described  in this Section 13, the Rights which
         have not theretofore  been exercised shall thereafter be exercisable in
         the manner  described in Section 13(a) (without taking into account any
         prior adjustment required by Section 11(a)(ii)).

         (f)  The  provisions  of this  Section  13  shall  similarly  apply  to
         successive mergers or consolidations or sales or other transfers.

         Section 14. Fractional Rights and Fractional Shares.

         (a) The Company  shall not be required to issue  fractions of Rights or
         to distribute Rights  Certificates which evidence fractional Rights. In
         lieu of such fractional  Rights,  there shall be paid to the registered
         holders of the Rights Certificates with regard to which such fractional
         Rights would otherwise be issuable, an amount in cash equal to the same
         fraction of the current market value of a whole Right. For the purposes
         of this Section 14(a),  the current market value of a whole Right shall
         be the  closing  price of the Rights for the  Trading  Day  immediately
         prior to the date on which  such  fractional  Rights  would  have  been
         otherwise  issuable,  as determined  pursuant to the second sentence of
         Section 11(d) hereof.
<PAGE>
         (b) The Company  shall not be required to issue  fractions of Preferred
         Shares  (other  than  fractions  that  are  integral  multiples  of one
         one-hundredth  of a Preferred  Share) upon exercise of the Rights or to
         distribute  certificates  which evidence  fractional  Preferred  Shares
         (other than fractions that are integral  multiples of one one-hundredth
         of a Preferred Share). In lieu of fractional  Preferred Shares that are
         not integral  multiples of one  one-hundredth of a Preferred Share, the
         Company shall pay to the registered  holders of Rights  Certificates at
         the time such Rights are exercised as herein provided an amount in cash
         equal to the same  fraction  of the  current  market  value of a Common
         Share.  For purposes of this Section 14(b), the current market value of
         a Common  Share  shall be the  closing  price  of a  Common  Share  (as
         determined pursuant to the second sentence of Section 11(d) hereof) for
         the Trading Day immediately prior to the date of such exercise.

         (c) The  holder of a Right by the  acceptance  of the  Right  expressly
         waives  his or her  right  to  receive  any  fractional  Rights  or any
         fractional shares upon exercise of a Right.

         Section 15.  Rights of Action.  All rights of action in respect of this
Agreement,  excepting  the  rights of action  given to the  Rights  Agent  under
Section 18 hereof, are vested in the respective registered holders of the Rights
Certificates (and, prior to the Distribution Date, the registered holders of the
Common Shares);  and any registered holder of any Rights  Certificate (or, prior
to the  Distribution  Date,  of the Common  Shares),  without the consent of the
Rights Agent or of the holder of any other Rights  Certificate (or, prior to the
Distribution Date, of the Common Shares),  may, in his or her own behalf and for
his or her own benefit, enforce, and may institute and maintain any suit, action
or  proceeding  against the Company to enforce,  or otherwise act in respect of,
his or her right to exercise the Rights evidenced by such Rights  Certificate in
the manner provided in such Rights  Certificate  and in this Agreement.  Without
limiting the foregoing or any remedies available to the holders of Rights, it is
specifically  acknowledged that the holders of Rights would not have an adequate
remedy at law for any breach of this  Agreement and will be entitled to specific
performance of the obligations  under,  and injunctive  relief against actual or
threatened  violations  of,  the  obligations  of any  Person  subject  to  this
Agreement.

         Section 16.  Agreement of Rights  Holders.  Every holder of a Right, by
accepting  the same,  consents  and agrees with the Company and the Rights Agent
and with every other holder of a Right that:

         (a) prior to the  Distribution  Date,  the Rights will be  transferable
         only in connection with the transfer of the Common Shares;

         (b)  after  the   Distribution   Date,  the  Rights   Certificates  are
         transferable  only  on the  registry  books  of  the  Rights  Agent  if
         surrendered  at the  principal  office or offices  of the Rights  Agent
         designated for such purposes,  duly endorsed or accompanied by a proper
         instrument of transfer and with the appropriate  forms and certificates
         fully executed; and
<PAGE>
         (c)  subject to  Sections  6(a) and 7(f)  hereof,  the  Company and the
         Rights  Agent may deem and treat the  person in whose  name the  Rights
         Certificate (or, prior to the Distribution  Date, the associated Common
         Shares  certificate) is registered as the absolute owner thereof and of
         the  Rights  evidenced  thereby   (notwithstanding   any  notations  of
         ownership  or  writing  on the Rights  Certificates  or the  associated
         Common Shares  certificate made by anyone other than the Company or the
         Rights Agent) for all purposes whatsoever,  and neither the Company nor
         the Rights Agent shall be affected by any notice to the contrary.

         Section 17.  Rights  Certificate  Holder Not Deemed a  Stockholder.  No
holder, as such, of any Rights  Certificate  shall be entitled to vote,  receive
dividends or be deemed for any purpose the holder of the Preferred Shares or any
other  securities  of the  Company  which  may at any  time be  issuable  on the
exercise of the Rights represented  thereby, nor shall anything contained herein
or in any  Rights  Certificate  be  construed  to confer  upon the holder of any
Rights  Certificate,  as such, any of the rights of a stockholder of the Company
or any right to vote for the election of directors or upon any matter  submitted
to stockholders at any meeting  thereof,  or to give or withhold  consent to any
corporate  action,  or to receive notice of meetings or other actions  affecting
stockholders  (except as provided in Section 25 hereof), or to receive dividends
or subscription  rights,  or otherwise,  until the Right or Rights  evidenced by
such  Rights  Certificate  shall  have been  exercised  in  accordance  with the
provisions hereof.

         Section 18. Concerning the Rights Agent.

         (a)  The  Company  agrees  to  pay  to  the  Rights  Agent   reasonable
         compensation  for all services  rendered by it hereunder and, from time
         to time, on demand of the Rights  Agent,  its  reasonable  expenses and
         counsel fees and other disbursements incurred in the administration and
         execution of this  Agreement  and the exercise and  performance  of its
         duties hereunder. The Company also agrees to indemnify the Rights Agent
         for, and to hold it harmless against,  any loss,  liability or expense,
         incurred  without  negligence,  bad faith or willful  misconduct on the
         part of the Rights  Agent,  for anything  done or omitted by the Rights
         Agent in connection  with the  acceptance  and  administration  of this
         Agreement,  including  the  reasonable  costs and expenses of defending
         against any claim of liability in the premises.

         (b) The Rights  Agent shall be  protected  and shall incur no liability
         for,  or in respect of any action  taken,  suffered or omitted by it in
         connection with, its  administration of this Agreement in reliance upon
         any Rights  Certificate  or  certificate  for the  Preferred  Shares or
         Common  Shares or for other  securities  of the Company,  instrument of
         assignment  or  transfer,  power of attorney,  endorsement,  affidavit,
         letter, notice, direction,  consent,  certificate,  statement, or other
         paper  or  document  believed  by it to be  genuine  and to be  signed,
         executed and, where necessary,  verified or acknowledged, by the proper
         Person or Persons, or otherwise upon the advice of counsel as set forth
         in Section 20 hereof.
<PAGE>
         Section 19. Merger or Consolidation or Change of Name of Rights Agent.

         (a) Any corporation into which the Rights Agent or any successor Rights
         Agent  may be  merged  or with  which  it may be  consolidated,  or any
         corporation  resulting  from any merger or  consolidation  to which the
         Rights Agent or any  successor  Rights  Agent shall be a party,  or any
         corporation  succeeding to the corporate  trust  business of the Rights
         Agent or any  successor  Rights  Agent,  shall be the  successor to the
         Rights Agent under this  Agreement  without the  execution or filing of
         any paper or any further act on the part of any of the parties  hereto;
         provided,   however,  that  such  corporation  would  be  eligible  for
         appointment as a successor Rights Agent under the provisions of Section
         21  hereof.  In case at the time  such  successor  Rights  Agent  shall
         succeed to the  agency  created  by this  Agreement,  any of the Rights
         Certificates shall have been countersigned but not delivered,  any such
         successor   Rights  Agent  may  adopt  the   countersignature   of  the
         predecessor  Rights  Agent and  deliver  such  Rights  Certificates  so
         countersigned;  and in case at that time any of the Rights Certificates
         shall not have  been  countersigned,  any  successor  Rights  Agent may
         countersign  such  Rights  Certificates  either  in  the  name  of  the
         predecessor  Rights Agent or in the name of the successor Rights Agent;
         and in all such  cases  such  Rights  Certificates  shall have the full
         force provided in the Rights Certificates and in this Agreement.

         (b) In case at any time the name of the Rights  Agent  shall be changed
         and at  such  time  any of the  Rights  Certificates  shall  have  been
         countersigned  but not  delivered,  the  Rights  Agent  may  adopt  the
         countersignature  under its prior name and deliver Rights  Certificates
         so  countersigned;  and  in  case  at  that  time  any  of  the  Rights
         Certificates  shall not have been  countersigned,  the Rights Agent may
         countersign such Rights Certificates either in its prior name or in its
         changed name; and in all such cases such Rights Certificates shall have
         the  full  force  provided  in the  Rights  Certificates  and  in  this
         Agreement.

         Section 20. Duties of Rights  Agent.  The Rights Agent  undertakes  the
duties and  obligations  imposed by this Agreement upon the following  terms and
conditions,  by all of which the Company and the holders of Rights Certificates,
by their acceptance thereof, shall be bound:

         (a) The Rights Agent may consult  with legal  counsel (who may be legal
         counsel for the Company), and the opinion of such counsel shall be full
         and complete authorization and protection to the Rights Agent as to any
         action taken or omitted by it in good faith and in accordance with such
         opinion.

         (b) Whenever in the  performance of its duties under this Agreement the
         Rights  Agent shall deem it  necessary  or  desirable  that any fact or
         matter (including,  without  limitation,  the identity of any Acquiring
         Person and the  determination  of "current per share market  price") be
         proved or  established  by the Company prior to taking or suffering any
         action hereunder, such fact or matter (unless other evidence in respect
         thereof  be  herein  specifically  prescribed)  may  be  deemed  to  be
         conclusively  proved and established by a certificate signed by any one
<PAGE>
         of  the  Chairman  of the  Board,  the  Chief  Executive  Officer,  the
         President,  any  Vice  President,  the  Chief  Financial  Officer,  the
         Secretary or any  Assistant  Secretary of the Company and  delivered to
         the Rights Agent; and such certificate  shall be full  authorization to
         the Rights  Agent for any action  taken or suffered in good faith by it
         under  the   provisions  of  this   Agreement  in  reliance  upon  such
         certificate.

         (c) The Rights  Agent shall be liable  hereunder to the Company and any
         other  Person  only  for its  own  negligence,  bad  faith  or  willful
         misconduct.

         (d) The Rights Agent shall not be liable for or by reason of any of the
         statements  of fact or recitals  contained in this  Agreement or in the
         Rights  Certificates  (except  its  countersignature   thereof)  or  be
         required to verify the same,  but all such  statements and recitals are
         and shall be deemed to have been made by the Company only.

         (e) The Rights Agent shall not be under any  responsibility  in respect
         of the validity of this Agreement or the execution and delivery  hereof
         (except the due execution  hereof by the Rights Agent) or in respect of
         the  validity  or  execution  of any  Rights  Certificate  (except  its
         countersignature  thereof);  nor shall it be responsible for any breach
         by the Company of any covenant or condition contained in this Agreement
         or in any  Rights  Certificate;  nor  shall it be  responsible  for any
         change in the  exercisability  of the Rights or any  adjustment  in the
         terms of the Rights  (including the manner,  method or amount  thereof)
         provided  for in Sections 3, 11, 13, 23 or 24, or the  ascertaining  of
         the existence of facts that would require any such change or adjustment
         (except  with  respect to the  exercise of Rights  evidenced  by Rights
         Certificates  after  receipt  by  the  Rights  Agent  of a  certificate
         furnished pursuant to Section 12 describing such change or adjustment);
         nor shall it by any act hereunder be deemed to make any  representation
         or warranty as to the  authorization  or  reservation  of any Preferred
         Shares  to  be  issued   pursuant  to  this  Agreement  or  any  Rights
         Certificate or as to whether any Preferred Shares will, when issued, be
         validly authorized and issued, fully paid and nonassessable.

         (f) The Company agrees that it will perform,  execute,  acknowledge and
         deliver or cause to be performed, executed,  acknowledged and delivered
         all such  further and other acts,  instruments  and  assurances  as may
         reasonably  be required  by the Rights  Agent for the  carrying  out or
         performing by the Rights Agent of the provisions of this Agreement.

         (g) The  Rights  Agent is  hereby  authorized  and  directed  to accept
         instructions  with respect to the  performance of its duties  hereunder
         from any one of the Chairman of the Board, the Chief Executive Officer,
         the President,  any Vice President,  the Chief Financial  Officer,  the
         Secretary or any  Assistant  Secretary of the Company,  and to apply to
         such officers for advice or instructions in connection with its duties,
         and it shall not be liable for any action  taken or  suffered  by it in
         good faith in accordance  with  instructions of any such officer or for
         any  delay  in  acting  while  waiting  for  those  instructions.   Any
<PAGE>
         application  by the  Rights  Agent for  written  instructions  from the
         Company  may, at the option of the Rights  Agent,  set forth in writing
         any action  proposed  to be taken or omitted by the Rights  Agent under
         this Rights  Agreement  and the date on and/or  after which such action
         shall be taken or such omission  shall be  effective.  The Rights Agent
         shall not be liable for any action taken by, or omission of, the Rights
         Agent in accordance with a proposal included in any such application on
         or after the date specified in such  application  (which date shall not
         be less than five (5)  Business  Days after the date any officer of the
         Company  actually  receives such  application,  unless any such officer
         shall have  consented in writing to an earlier date)  unless,  prior to
         taking  any  such  action  (or the  effective  date  in the  case of an
         omission), the Rights Agent shall have received written instructions in
         response  to such  application  specifying  the  action  to be taken or
         omitted.

         (h) The Rights Agent and any stockholder, director, officer or employee
         of the Rights Agent may buy, sell or deal in any of the Rights or other
         securities  of the  Company  or become  pecuniarily  interested  in any
         transaction in which the Company may be interested, or contract with or
         lend  money to the  Company  or  otherwise  act as fully and  freely as
         though it were not Rights Agent under this  Agreement.  Nothing  herein
         shall  preclude the Rights Agent from acting in any other  capacity for
         the Company or for any other legal entity.

         (i) The Rights  Agent may  execute  and  exercise  any of the rights or
         powers hereby vested in it or perform any duty hereunder  either itself
         or by or through its  attorneys  or agents,  and the Rights Agent shall
         not be  answerable  or  accountable  for any act,  default,  neglect or
         misconduct  of any  such  attorneys  or  agents  or for any loss to the
         Company  resulting from any such act,  default,  neglect or misconduct,
         provided  reasonable  care was exercised in the selection and continued
         employment thereof.

         (j) No provision of this  Agreement  shall  require the Rights Agent to
         expend or risk its own funds or otherwise incur any financial liability
         in the performance of any of its duties hereunder or in the exercise of
         its rights if there  shall be  reasonable  grounds for  believing  that
         repayment of such funds or adequate  indemnification  against such risk
         or liability is not reasonably assured to it.

         (k) If,  with  respect to any  Rights  Certificate  surrendered  to the
         Rights Agent for exercise or transfer,  the certificate attached to the
         form of assignment or form of election to purchase, as the case may be,
         has either not been completed or indicates an  affirmative  response to
         clause 1 and/or 2 thereof,  the Rights Agent shall not take any further
         action with  respect to such  requested  exercise  or transfer  without
         first consulting with the Company.

         (l) At any time and from time to time after the Distribution Date, upon
         the request of the Company,  the Rights Agent shall promptly deliver to
         the Company a list,  as of the most recent  practicable  date (or as of
         such earlier date as may be specified by the  Company),  of the holders
         of record of Rights.
<PAGE>
         Section 21. Change of Rights  Agent.  The Rights Agent or any successor
Rights Agent may resign and be discharged  from its duties under this  Agreement
upon  thirty  (30) days'  notice in writing  mailed to the  Company  and to each
transfer  agent of the  Preferred  Shares and the Common Shares by registered or
certified  mail,  and to the holders of the Rights  Certificates  by first-class
mail. The Company may remove the Rights Agent or any successor Rights Agent upon
thirty (30) days'  notice in writing,  mailed to the Rights  Agent or  successor
Rights Agent,  as the case may be, and to each  transfer  agent of the Preferred
Shares and the Common Shares by registered or certified mail, and to the holders
of the Rights Certificates by first-class mail. If the Rights Agent shall resign
or be removed or shall otherwise become  incapable of acting,  the Company shall
appoint a successor to the Rights Agent.  If the Company shall fail to make such
appointment  within a period of thirty  (30) days  after  giving  notice of such
removal  or  after  it has been  notified  in  writing  of such  resignation  or
incapacity by the resigning or incapacitated  Rights Agent or by the holder of a
Rights  Certificate  (who  shall,  with such  notice,  submit  his or her Rights
Certificate  for inspection by the Company),  then the registered  holder of any
Rights  Certificate  may apply to any court of  competent  jurisdiction  for the
appointment of a new Rights Agent. Any successor Rights Agent, whether appointed
by the Company or by such a court,  shall be a  corporation  organized and doing
business  under the laws of the  United  States  or of any  state of the  United
States,  in good  standing,  which is  authorized  under  such laws to  exercise
corporate trust or stockholder  services powers and is subject to supervision or
examination  by  federal  or state  authority  and  which has at the time of its
appointment  as Rights  Agent a  combined  capital  and  surplus of at least $50
million. After appointment,  the successor Rights Agent shall be vested with the
same powers,  rights,  duties and  responsibilities as if it had been originally
named as Rights Agent without  further act or deed; but the  predecessor  Rights
Agent shall deliver and transfer to the  successor  Rights Agent any property at
the time held by it  hereunder,  and execute and deliver any further  assurance,
conveyance,  act or deed necessary for the purpose. Not later than the effective
date of any such  appointment,  the Company shall file notice thereof in writing
with the  predecessor  Rights  Agent and each  transfer  agent of the  Preferred
Shares  and the  Common  Shares,  and mail a notice  thereof  in  writing to the
registered  holders  of the  Rights  Certificates.  Failure  to give any  notice
provided  for in this  Section 21,  however,  or any defect  therein,  shall not
affect the  legality  or validity  of the  resignation  or removal of the Rights
Agent or the appointment of the successor Rights Agent, as the case may be.

         Section 22. Issuance of New Rights Certificates. Notwithstanding any of
the provisions of this  Agreement or of the Rights to the contrary,  the Company
may, at its option, issue new Rights Certificates evidencing Rights in such form
as may be approved by its Board of Directors to reflect any adjustment or change
in the  Purchase  Price  and the  number  or kind or  class of  shares  or other
securities  or  property  purchasable  under  the  Rights  Certificates  made in
accordance  with the provisions of this  Agreement.  In addition,  in connection
with the issuance or sale of Common Shares following the  Distribution  Date and
prior to the redemption or expiration of the Rights, the Company (a) shall, with
respect to Common  Shares so issued or sold  pursuant  to the  exercise of stock
options or  warrants  or under any  employee  plan or  arrangement,  or upon the
exercise,  conversion  or  exchange  of  securities  hereinafter  issued  by the
Company,  and (b) may, in any other case, if deemed  necessary or appropriate by
the Board of Directors of the Company,  issue Rights  Certificates  representing
the  appropriate  number of Rights in  connection  with such  issuance  or sale;
provided,  however, that (i) no such Rights Certificate shall be issued and this
sentence  shall be null and void ab initio  if,  and to the  extent  that,  such
<PAGE>
issuance  or this  sentence  would  create a  significant  risk of or  result in
material  adverse  tax  consequences  to the  Company or the Person to whom such
Rights  Certificate  would be issued or would  create a  significant  risk of or
result in such options' or employee plans' or  arrangements'  failing to qualify
for  otherwise   available  special  tax  treatment  and  (ii)  no  such  Rights
Certificate shall be issued if, and to the extent that,  appropriate  adjustment
shall otherwise have been made in lieu of the issuance thereof.

         Section 23. Redemption.

         (a) The Company  may, at its option and with the  approval of the Board
         of Directors, at any time prior to the Close of Business on the earlier
         of (i) the tenth day  following  the  Shares  Acquisition  Date or such
         later date as may be  determined  by action of a majority of Continuing
         Directors then in office and publicly  announced by the Company or (ii)
         the Final  Expiration  Date,  redeem all but not less than all the then
         outstanding   Rights  at  a   redemption   price  of  $.01  per  Right,
         appropriately  adjusted to reflect any stock split,  stock  dividend or
         similar  transaction  occurring after the date hereof (such  redemption
         price  being  herein  referred  to as the  "Redemption  Price") and the
         Company may, at its option,  pay the Redemption  Price either in Common
         Shares  (based  on the  current  per share  market  price  thereof  (as
         determined pursuant to Section 11(d) hereof) at the time of redemption)
         or cash.  Such  redemption  of the  Rights by the  Company  may be made
         effective at such time,  on such basis and with such  conditions as the
         Board of  Directors in its sole  discretion  may  establish;  provided,
         however, if the Board of Directors of the Company authorizes redemption
         of the  Rights  on or  after  the time a Person  becomes  an  Acquiring
         Person, then there must be Continuing Directors then in office and such
         authorization  shall  require  the  concurrence  of a majority  of such
         Continuing Directors.

         (b)  Immediately  upon the  action  of the  Board of  Directors  of the
         Company ordering the redemption of the Rights,  evidence of which shall
         have been filed with the Rights Agent,  and without any further  action
         and without any notice, the right to exercise the Rights will terminate
         and the only right  thereafter  of the  holders  of Rights  shall be to
         receive the  Redemption  Price.  The Company shall promptly give public
         notice of any such redemption;  provided,  however, that the failure to
         give or any defect in, any such notice shall not effect the validity of
         such redemption.  Within ten (10) days after the action of the Board of
         Directors ordering the redemption of the Rights, the Company shall give
         notice of such  redemption  to the Rights  Agent and the holders of the
         then  outstanding  Rights by mailing such notice to all such holders at
         their last  addresses  as they  appear upon the  registry  books of the
         Rights Agent or, prior to the Distribution  Date, on the registry books
         of the transfer agent for the Common Shares. Any notice which is mailed
         in the manner herein provided shall be deemed given, whether or not the
         holder  receives the notice.  Each such notice of redemption will state
         the method by which the payment of the  Redemption  Price will be made.
         Neither the Company nor any of its Affiliates or Associates may redeem,
         acquire  or  purchase  for value any  Rights at any time in any  manner
         other than that specifically set forth in this Section 23 or in Section
         24 hereof,  and other than in  connection  with the  purchase of Common
         Shares prior to the Distribution Date.
<PAGE>
         Section 24. Exchange.

         (a) Subject to applicable laws,  rules and regulations,  and subject to
         subsection (c) below, the Company may, at its option,  by majority vote
         of the  Board  of  Directors  and a  majority  vote  of the  Continuing
         Directors,  at any time after the  occurrence  of a  Triggering  Event,
         exchange all or part of the then  outstanding  and  exercisable  Rights
         (which shall not include  Rights that have become void  pursuant to the
         provisions  of Section  7(e)  hereof) for Common  Shares at an exchange
         ratio of one Common Share per Right,  appropriately adjusted to reflect
         any stock split, stock dividend or similar transaction  occurring after
         the date hereof (such exchange ratio being  hereinafter  referred to as
         the "Ratio of Exchange").  Notwithstanding the foregoing,  the Board of
         Directors  shall not be empowered  to effect such  exchange at any time
         after  any  Person  (other  than the  Company,  any  Subsidiary  of the
         Company,  any  employee  benefit  plan  of  the  Company  or  any  such
         Subsidiary,  or any entity holding Common Shares for or pursuant to the
         terms of any such plan), together with all Affiliates and Associates of
         such Person,  becomes the Beneficial Owner of 50% or more of the Common
         Shares then outstanding.

         (b) Immediately upon the action of the Board of Directors  ordering the
         exchange of any Rights  pursuant to  subsection  (a) of this Section 24
         and  without any  further  action and without any notice,  the right to
         exercise such Rights shall terminate and the only right thereafter of a
         holder of such Rights shall be to receive that number of Common  Shares
         equal to the number of such Rights held by such  holder  multiplied  by
         the Ratio of Exchange. The Company shall give public notice of any such
         exchange;  provided,  however,  that the failure to give, or any defect
         in, such notice  shall not affect the  validity of such  exchange.  The
         Company  shall mail a notice of any such exchange to all of the holders
         of such Rights at their last addresses as they appear upon the registry
         books of the Rights  Agent.  Any  notice  which is mailed in the manner
         herein  provided  shall be  deemed  given,  whether  or not the  holder
         receives the notice. Each such notice of exchange will state the method
         by which the exchange of the Common  Shares for Rights will be effected
         and, in the event of any partial  exchange,  the number of Rights which
         will be  exchanged.  Any partial  exchange  shall be effected  pro rata
         based on the number of Rights (other than Rights which have become void
         pursuant to the  provisions of Section 7(e) hereof) held by each holder
         of Rights.

         (c) In the event  that  there  shall not be  sufficient  Common  Shares
         issued but not  outstanding  or  authorized  but unissued to permit any
         exchange of Rights as  contemplated  in accordance  with Section 24(a),
         the  Company  shall  either  take such  action as may be  necessary  to
         authorize  additional  Common  Shares for issuance upon exchange of the
         Rights or  alternatively,  at the option of a majority  of the Board of
         Directors,  with  respect to each Right (i) pay cash in an amount equal
         to the  Current  Value (as  hereinafter  defined),  in lieu of  issuing
         Common  Shares  in  exchange  therefor,  or (ii)  issue  debt or equity
         securities  or a  combination  thereof,  having  a value  equal  to the
         Current  Value,  in lieu of issuing  Common Shares in exchange for each
         such Right, where the value of such securities shall be determined by a
         nationally  recognized investment banking firm selected by the Board of
         Directors by majority vote of the Board of Directors,  or (iii) deliver
<PAGE>
         any  combination  of  cash,   property,   Common  Shares  and/or  other
         securities  having a value equal to the Current  Value in exchange  for
         each Right.  For purposes of this Section 24(c) only, the Current Value
         shall mean the product of the current per share  market price of Common
         Shares  (determined  pursuant  to  Section  11(d)  on the  date  of the
         occurrence of the event described above in subparagraph (a)) multiplied
         by the number of Common Shares for which the Right  otherwise  would be
         exchangeable if there were sufficient shares  available.  To the extent
         that the Company  determines that some action need be taken pursuant to
         clauses  (i),  (ii) or  (iii)  of this  Section  24(c),  the  Board  of
         Directors may temporarily  suspend the exercisability of the Rights for
         a period of up to sixty (60) days following the date on which the event
         described in Section  24(a) shall have  occurred,  in order to seek any
         authorization  of  additional   Common  Shares  and/or  to  decide  the
         appropriate  form of  distribution  to be made  pursuant  to the  above
         provision and to determine the value thereof.  In the event of any such
         suspension,  the Company shall issue a public announcement stating that
         the exercisability of the Rights has been temporarily suspended.

         (d) The  Company  shall not be required  to issue  fractions  of Common
         Shares or to distribute  certificates which evidence  fractional Common
         Shares. In lieu of such fractional  Common Shares,  there shall be paid
         to the  registered  holders of the Rights  Certificates  with regard to
         which such  fractional  Common Shares would  otherwise be issuable,  an
         amount in cash  equal to the same  fraction  of the  current  per share
         market  value of a whole Common  Share (as  determined  pursuant to the
         second sentence of Section 11(d) hereof).

         (e) The Company  may, at its option,  by majority  vote of the Board of
         Directors,  at any time  before  any  Person  has  become an  Acquiring
         Person,  exchange all or part of the then outstanding Rights for rights
         of substantially  equivalent  value, as determined  reasonably and with
         good faith by the Board of  Directors,  based upon the advice of one or
         more nationally recognized investment banking firms.

         (f) Immediately upon the action of the Board of Directors  ordering the
         exchange of any Rights  pursuant to  subsection  (e) of this Section 24
         and  without any  further  action and without any notice,  the right to
         exercise such Rights shall terminate and the only right thereafter of a
         holder of such  Rights  shall be to  receive  that  number of rights in
         exchange  therefor as has been  determined by the Board of Directors in
         accordance  with  subsection  (e) above.  The Company shall give public
         notice of any such  exchange;  provided,  however,  that the failure to
         give,  or any defect in, such notice  shall not affect the  validity of
         such exchange.  The Company shall mail a notice of any such exchange to
         all of the  holders  of such  Rights at their  last  addresses  as they
         appear upon the  registry  books of the  transfer  agent for the Common
         Shares of the Company.  Any notice which is mailed in the manner herein
         provided shall be deemed given,  whether or not the holder receives the
         notice. Each such notice of exchange will state the method by which the
         exchange of the Rights will be effected.
<PAGE>
         Section 25. Notice of Certain Events.

         (a) In case the Company  shall propose to effect or permit to occur any
         Triggering Event described in Section 11(a)(ii)(A) or 11(a)(ii)(B) or a
         Section 13 Event,  the Company shall give notice thereof to each holder
         of Rights in  accordance  with  Section 26 hereof at least  twenty (20)
         days prior to  occurrence of such  Triggering  Event or such Section 13
         Event.

         (b) In case any Triggering Event or Section 13 Event shall occur, then,
         in any such case, the Company shall as soon as  practicable  thereafter
         give to each holder of a Rights Certificate, in accordance with Section
         26  hereof,  a notice of the  occurrence  of such  event,  which  shall
         specify  the event and the  consequences  of the  event to  holders  of
         Rights under Sections 11(a)(ii) and 13 hereof.

         Section 26. Notices. Notices or demands authorized by this Agreement to
be given or made by the Rights Agent or by the holder of any Rights  Certificate
to or on the Company shall be sufficiently  given or made if sent by first-class
mail, postage prepaid, addressed (until another address is filed in writing with
the Rights Agent) as follows:

                            EXOGEN, INC.
                            10 Constitution Avenue
                            P.O. Box 6860
                            Piscataway, New Jersey 08855
                            Attn:  President

         Subject to the  provisions  of Section 21 hereof,  any notice or demand
authorized by this Agreement to be given or made by the Company or by the holder
of any Rights  Certificate to or on the Rights Agent shall be sufficiently given
or made if sent by first-class mail,  postage prepaid,  addressed (until another
address is filed in writing with the Company) as follows:

                            Registrar and Transfer Company
                            10 Commerce Drive
                            Cranford, New Jersey 07016
                            Attention:  Stock Transfer Administration


Notices  or  demands  authorized  by this  Agreement  to be given or made by the
Company or the Rights  Agent to the  holder of any Rights  Certificate  shall be
sufficiently  given  or  made  if sent by  first-class  mail,  postage  prepaid,
addressed  to such holder at the address of such holder as shown on the registry
books of the Company.

         Section 27. Supplements and Amendments. Prior to the Distribution Date,
the Company may  supplement or amend this  Agreement in any respect  without the
approval of any holders of Rights and the Rights Agent shall,  if the Company so
directs,  execute such supplement or amendment.  From and after the Distribution
Date, the Company and the Rights Agent may from time to time supplement or amend
this  Agreement  without  the  approval of any holders of Rights in order to (i)
cure any ambiguity,  (ii) correct or supplement any provision  contained  herein
which may be defective or inconsistent with any other provisions  herein,  (iii)
shorten or lengthen any time period hereunder (which  lengthening or shortening,
<PAGE>
following  the first  occurrence of an event set forth in the proviso to Section
23(a)  hereof,  shall be effective  only if there are  Continuing  Directors and
shall require the  concurrence  of a majority of such  Continuing  Directors) or
(iv) to change or  supplement  the  provisions  hereunder in any manner that the
Company may deem necessary or desirable and that shall not adversely  affect the
interests  of the  holders  of  Rights  (other  than an  Acquiring  Person or an
Affiliate or Associate of an Acquiring Person); provided, this Agreement may not
be  supplemented  or  amended  to  lengthen,  pursuant  to clause  (iii) of this
sentence,  (A) a time period relating to when the Rights may be redeemed at such
time as the Rights are not then  redeemable  or (B) any other time period unless
such  lengthening is for the purpose of protecting,  enhancing or clarifying the
rights of, and/or the benefits to, the holders of Rights. Upon the delivery of a
certificate  from an  appropriate  officer of the  Company  that states that the
proposed supplement or amendment is in compliance with the terms of this Section
27, the Rights Agent shall execute such  supplement  or amendment.  Prior to the
Distribution  Date,  the  interests  of the  holders  of Rights  shall be deemed
coincident with the interests of the holders of Common Shares.

         Section  28.  Successors.  All the  covenants  and  provisions  of this
Agreement  by or for the benefit of the  Company or the Rights  Agent shall bind
and inure to the benefit of their respective successors and assigns hereunder.

         Section 29. Determinations and Actions by the Board of Directors,  etc.
For all  purposes of this  Agreement,  any  calculation  of the number of Common
Shares outstanding at any particular time, including for purposes of determining
the particular  percentage of such outstanding Common Shares of which any Person
is the Beneficial  Owner,  shall be made in accordance with the last sentence of
Rule 13d-3(d)(1)(i) of the General Rules and Regulations under the Exchange Act.
The Board of  Directors of the Company  (and,  where  specifically  provided for
herein,  the Continuing  Directors) shall have the exclusive power and authority
to administer this Agreement and to exercise all rights and powers  specifically
granted to the Board,  or the  Company  (or,  where  specifically  provided  for
herein,  the Continuing  Directors),  or as may be necessary or advisable in the
administration of this Agreement,  including,  without limitation, the right and
power to (i)  interpret  the  provisions  of this  Agreement  and (ii)  make all
determinations  deemed  necessary or advisable  for the  administration  of this
Agreement  (including a  determination  to redeem or not redeem the Rights or to
amend  the  Agreement).  All such  actions,  calculations,  interpretations  and
determinations  (including, for purposes of clause (y) below, all omissions with
respect  to the  foregoing)  which  are  done or made by the  Board  (or,  where
specifically  provided for herein,  by the Continuing  Directors) in good faith,
shall (x) be final, conclusive and binding on the Company, the Rights Agent, the
holders of the Rights Certificates and all other parties and (y) not subject the
Board or the Continuing Directors to any liability to the holders of the Rights.

         Section 30. Benefits of this Agreement. Nothing in this Agreement shall
be construed to give to any Person other than the Company,  the Rights Agent and
the  registered   holders  of  the  Rights   Certificates  (and,  prior  to  the
Distribution  Date, the Common Shares) any legal or equitable  right,  remedy or
claim  under  this  Agreement;  but  this  Agreement  shall  be for the sole and
exclusive benefit of the Company, the Rights Agent and the registered holders of
the  Rights  Certificates  (and,  prior to the  Distribution  Date,  the  Common
Shares).
<PAGE>
         Section  31.  Severability.   If  any  term,  provision,   covenant  or
restriction  of this Agreement is held by a court of competent  jurisdiction  or
other  authority  to be invalid,  void or  unenforceable,  the  remainder of the
terms, provisions,  covenants and restrictions of this Agreement shall remain in
full force and effect and shall in no way be affected,  impaired or invalidated;
provided,  however,  that  notwithstanding  anything  in this  Agreement  to the
contrary, if any such term,  provision,  covenant or restriction is held by such
court  or  authority  to be  invalid,  void or  unenforceable  and the  Board of
Directors of the Company determines in its good faith judgment that severing the
invalid  language  from this  Agreement  would  adversely  affect the purpose or
effect of this Agreement, the right of redemption set forth in Section 23 hereof
shall be  reinstated  and shall not expire  until the close of  business  on the
tenth day following the date of such determination by the Board of Directors.

         Section  32.  Governing  Law.  This  Agreement  and each Right and each
Rights  Certificate issued hereunder shall be deemed to be a contract made under
the laws of the State of Delaware and for all purposes  shall be governed by and
construed in accordance  with the laws of such State  applicable to contracts to
be made and performed entirely within such State.

         Section 33. Counterparts.  This Agreement may be executed in any number
of counterparts and each of such  counterparts  shall for all purposes be deemed
to be an original,  and all such counterparts shall together  constitute but one
and the same instrument.

         Section 34. Descriptive  Headings.  Descriptive headings of the several
Sections of this  Agreement  are  inserted  for  convenience  only and shall not
control or affect the meaning or construction of any of the provisions hereof.
<PAGE>

         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed as of the day and year first above written.


"COMPANY"                           EXOGEN, INC.


                                    By:/s/ Patrick A. McBrayer
                                           ------------------- 
                                    Name:  Patrick A. McBrayer
                                    Title: Chief Executive Officer and President

"RIGHTS AGENT"                      REGISTRAR AND TRANSFER COMPANY


                                    By:/s/ William P. Tatler
                                           -----------------
                                    Name:  William P. Tatler
                                    Title: Vice President


<PAGE>

                                                                       EXHIBIT A



                CERTIFICATE OF DESIGNATION OF RIGHTS, PREFERENCES
                                AND PRIVILEGES OF

                     SERIES A PARTICIPATING PREFERRED STOCK
                                 OF EXOGEN, INC.


         Pursuant to Section 151 of the Delaware General Corporation Law


         The undersigned,  Patrick A. McBrayer and Richard H. Reisner, do hereby
certify:

         1. That they are the duly  elected and acting Chief  Executive  Officer
and  President,  and Vice  President,  Chief  Financial  Officer and  Secretary,
respectively, of Exogen, Inc., a Delaware corporation (the "Corporation").

         2. That pursuant to the authority conferred upon the Board of Directors
by  the  Amended  and  Restated   Certificate  of   Incorporation  of  the  said
Corporation,  the said  Board of  Directors  adopted  the  following  resolution
creating a series of 140,000  shares of Preferred  Stock  designated as Series A
Participating Preferred Stock:

         "RESOLVED,  that  pursuant  to the  authority  vested  in the  Board of
         Directors of the corporation by the Amended and Restated Certificate of
         Incorporation, the Board of Directors does hereby provide for the issue
         of a series of  Preferred  Stock,  par value  $.0001 per share,  of the
         Corporation, to be designated "Series A Participating Preferred Stock,"
         initially  consisting  of 140,000  shares  and to the  extent  that the
         designations, powers, preferences and relative and other special rights
         and the  qualifications,  limitations and  restrictions of the Series A
         Participating  Preferred  Stock are not  stated  and  expressed  in the
         Amended and Restated Certificate of Incorporation,  does hereby fix and
         herein state and express such  designations,  powers,  preferences  and
         relative and other special rights and the  qualifications,  limitations
         and restrictions  thereof,  as follows (all terms used herein which are
         defined in the Amended and Restated  Certificate of Incorporation shall
         be deemed to have the meanings provided therein):

         Section 1.  Designation and Amount.  The shares of such series shall be
designated  as "Series A  Participating  Preferred  Stock," par value $.0001 per
share, and the number of shares constituting such series shall be 140,000.

         Section 2.        Dividends and Distributions.

                  (A) Subject to the prior and superior  right of the holders of
any shares of any series of Preferred  Stock  ranking  prior and superior to the
shares of Series A Participating Preferred Stock with respect to dividends,  the
holders of shares of Series A Participating Preferred Stock shall be entitled to
receive  when, as and if declared by the Board of Directors out of funds legally
<PAGE>
available for the purpose,  quarterly  dividends payable in cash on the last day
of  December,  March,  June and  September  in each year  (each  such date being
referred to herein as a "Quarterly  Dividend  Payment Date"),  commencing on the
first  Quarterly  Dividend  Payment Date after the first  issuance of a share or
fraction of a share of Series A Participating  Preferred Stock, in an amount per
share  (rounded to the  nearest  cent) equal to,  subject to the  provision  for
adjustment  hereinafter  set forth,  100 times the aggregate per share amount of
all cash  dividends,  and 100 times the aggregate  per share amount  (payable in
kind) of all  non-cash  dividends or other  distributions  other than a dividend
payable in shares of Common Stock or a subdivision of the outstanding  shares of
Common Stock (by reclassification or otherwise), declared on the Common Stock of
the Corporation (the "Common Stock") since the immediately  preceding  Quarterly
Dividend Payment Date, or, with respect to the first Quarterly  Dividend Payment
Date,  since the first  issuance of any share or fraction of a share of Series A
Participating  Preferred  Stock. In the event the Corporation  shall at any time
after December 6, 1996 (the "Rights Declaration Date") (i) declare  any dividend
on  Common  Stock  payable  in  shares  of  Common  Stock,  (ii)  subdivide  the
outstanding  Common Stock, or (iii) combine the outstanding  Common Stock into a
smaller number of shares,  then in each such case the amount to which holders of
shares of Series A Participating Preferred Stock were entitled immediately prior
to such event under the preceding sentence shall be adjusted by multiplying such
amount by a fraction,  the  numerator of which is the number of shares of Common
Stock  outstanding  immediately after such event and the denominator of which is
the number of shares of Common Stock that were outstanding  immediately prior to
such event.

                  (B) The  Corporation  shall declare a dividend or distribution
on the Series A Participating Preferred Stock as provided in paragraph (A) above
immediately  after it declares a dividend or  distribution  on the Common  Stock
(other than a dividend payable in shares of Common Stock).

                  (C)  Dividends  shall  begin to accrue  and be  cumulative  on
outstanding shares of Series A Participating  Preferred Stock from the Quarterly
Dividend  Payment Date next preceding the date of issue of such shares of Series
A  Participating  Preferred  Stock,  unless the date of issue of such  shares is
prior to the record date for the first Quarterly Dividend Payment Date, in which
case  dividends  on such shares  shall begin to accrue from the date of issue of
such shares, or unless the date of issue is a Quarterly Dividend Payment Date or
is a date after the record  date for the  determination  of holders of shares of
Series A Participating  Preferred Stock entitled to receive a quarterly dividend
and before such Quarterly  Dividend Payment Date, in either of which events such
dividends shall begin to accrue and be cumulative  from such Quarterly  Dividend
Payment Date.  Accrued but unpaid  dividends shall not bear interest.  Dividends
paid on the shares of Series A  Participating  Preferred Stock in an amount less
than the total amount of such  dividends at the time accrued and payable on such
shares  shall be  allocated  pro rata on a  share-by-share  basis among all such
shares at the time outstanding. The Board of Directors may fix a record date for
the determination of holders of shares of Series A Participating Preferred Stock
entitled to receive  payment of a dividend  or  distribution  declared  thereon,
which  record date shall be no more than 30 days prior to the date fixed for the
payment thereof.
<PAGE>
         Section  3.  Voting   Rights.   The  holders  of  shares  of  Series  A
Participating Preferred Stock shall have the following voting rights:

                  (A) Subject to the provision for  adjustment  hereinafter  set
forth,  each share of Series A  Participating  Preferred Stock shall entitle the
holder  thereof  to  100  votes  on  all  matters  submitted  to a  vote  of the
stockholders of the Corporation.  In the event the Corporation shall at any time
after the Rights  Declaration  Date (i)  declare any  dividend  on Common  Stock
payable in shares of Common Stock, (ii) subdivide the outstanding  Common Stock,
or (iii) combine the  outstanding  Common Stock into a smaller number of shares,
then in each such case the number of votes per share to which  holders of shares
of Series A  Participating  Preferred Stock were entitled  immediately  prior to
such event  shall be  adjusted by  multiplying  such  number by a fraction,  the
numerator  of  which  is the  number  of  shares  of  Common  Stock  outstanding
immediately  after  such  event and the  denominator  of which is the  number of
shares of Common Stock that were outstanding immediately prior to such event.

                  (B) Except as otherwise provided herein or by law, the holders
of shares of Series A Participating Preferred Stock and the holders of shares of
Common Stock shall vote together as one class on all matters submitted to a vote
of stockholders of the Corporation.

                  (C)  Except  as   required   by  law,   holders  of  Series  A
Participating  Preferred  Stock  shall have no special  voting  rights and their
consent  shall not be required  (except to the extent they are  entitled to vote
with  holders of Common  Stock as set forth  herein)  for  taking any  corporate
action.

         Section 4.   Certain Restrictions.

                  (A) The  Corporation  shall not declare any  dividend on, make
any   distribution   on,  or  redeem  or  purchase  or  otherwise   acquire  for
consideration  any shares of Common Stock after the first issuance of a share or
fraction  of  a  share  of  Series  A   Participating   Preferred  Stock  unless
concurrently therewith it shall declare a dividend on the Series A Participating
Preferred Stock as required by Section 2 hereof.

                  (B)  Whenever  quarterly   dividends  or  other  dividends  or
distributions payable on the Series A Participating  Preferred Stock as provided
in  Section  2 are in  arrears,  thereafter  and until all  accrued  and  unpaid
dividends  and  distributions,  whether or not  declared,  on shares of Series A
Participating  Preferred  Stock  outstanding  shall have been paid in full,  the
Corporation shall not:

                      (i)   declare  or  pay   dividends   on,  make  any  other
distributions  on, or redeem or purchase or otherwise  acquire for consideration
any shares of stock ranking junior (either as to dividends or upon  liquidation,
dissolution or winding up) to the Series A Participating Preferred Stock;
 
                      (ii)  declare  or  pay   dividends   on,  make  any  other
distributions on any shares of stock ranking on a parity (either as to dividends
or upon  liquidation,  dissolution  or winding up) with  Series A  Participating
Preferred  Stock,  except  dividends paid ratably on the Series A  Participating
Preferred  Stock and all such parity stock on which  dividends are payable or in
arrears in  proportion  to the total  amounts  to which the  holders of all such
shares are then entitled;
<PAGE>
                      (iii)  redeem  or  purchase  or   otherwise   acquire  for
consideration shares of any stock ranking on a parity (either as to dividends or
upon  liquidation,  dissolution  or winding up) with the Series A  Participating
Preferred Stock, provided that the Corporation may at any time redeem,  purchase
or otherwise  acquire  shares of any such parity stock in exchange for shares of
any stock of the  Corporation  ranking  junior  (either as to  dividends or upon
dissolution,  liquidation or winding up) to the Series A Participating Preferred
Stock; or

                      (iv) purchase or otherwise  acquire for  consideration any
shares of Series A Participating Preferred Stock, or any shares of stock ranking
on a  parity  with  the  Series  A  Participating  Preferred  Stock,  except  in
accordance  with  a  purchase  offer  made  in  writing  or by  publication  (as
determined  by the Board of  Directors)  to all holders of such shares upon such
terms as the Board of Directors,  after  consideration of the respective  annual
dividend  rates and other  relative  rights and  preferences  of the  respective
series and  classes,  shall  determine  in good  faith  will  result in fair and
equitable treatment among the respective series or classes.

                  (C) The  Corporation  shall not permit any  subsidiary  of the
Corporation  to purchase or otherwise  acquire for  consideration  any shares of
stock of the Corporation  unless the Corporation  could,  under paragraph (A) of
this Section 4,  purchase or  otherwise  acquire such shares at such time and in
such manner.

         Section 5.  Reacquired  Shares.  Any  shares of Series A  Participating
Preferred Stock purchased or otherwise acquired by the Corporation in any manner
whatsoever shall be retired and canceled promptly after the acquisition thereof.
All such shares shall upon their  cancellation  become  authorized  but unissued
Preferred  Stock and may be reissued as part of a new series of Preferred  Stock
to be created by resolution or resolutions of the Board of Directors, subject to
the conditions and restrictions on issuance set forth herein.

         Section 6.   Liquidation, Dissolution or Winding Up.

                  (A) Upon any liquidation (voluntary or otherwise), dissolution
or winding up of the Corporation,  no distribution  shall be made to the holders
of shares of stock ranking junior  (either as to dividends or upon  liquidation,
dissolution or winding up) to the Series A Participating Preferred Stock unless,
prior thereto,  the holders of shares of Series A Participating  Preferred Stock
shall have received  $100 per share,  plus an amount equal to accrued and unpaid
dividends and  distributions  thereon,  whether or not declared,  to the date of
such payment (the "Series A Liquidation  Preference").  Following the payment of
the  full  amount  of  the  Series  A  Liquidation  Preference,   no  additional
distributions  shall be made to the holders of shares of Series A  Participating
Preferred  Stock unless,  prior  thereto,  the holders of shares of Common Stock
shall have received an amount per share (the "Common  Adjustment")  equal to the
quotient  obtained by dividing (i) the Series A  Liquidation  Preference by (ii)
100 (as appropriately adjusted as set forth in subparagraph (C) below to reflect
such events as stock splits, stock dividends and  recapitalization  with respect
to the Common  Stock)  (such number in clause (ii),  the  "Adjustment  Number").
Following the payment of the full amount of the Series A Liquidation  Preference
and the  Common  Adjustment  in respect  of all  outstanding  shares of Series A
Participating Preferred Stock and Common Stock, respectively,  holders of Series
A  Participating  Preferred  Stock and  holders of shares of Common  Stock shall
receive their  ratable and  proportionate  share of the  remaining  assets to be
distributed  in the ratio of the  Adjustment  Number to 1 with  respect  to such
Preferred Stock and Common Stock, on a per share basis, respectively.
<PAGE>
                  (B) In the  event,  however,  that  there  are not  sufficient
assets  available  to  permit  payment  in  full  to the  Series  A  Liquidation
Preference  and the  liquidation  preferences  of all other  series of Preferred
Stock, if any, which rank on a parity with the Series A Participating  Preferred
Stock, then such remaining assets shall be distributed ratably to the holders of
such parity shares in proportion to their respective liquidation preferences. In
the event,  however,  that there are not sufficient  assets  available to permit
payment in full of the Common  Adjustment,  then such remaining  assets shall be
distributed ratably to the holders of Common Stock.

                  (C) In the event the  Corporation  shall at any time after the
Rights  Declaration  Date (i) declare any  dividend on Common  Stock  payable in
shares of Common Stock,  (ii) subdivide the  outstanding  Common Stock, or (iii)
combine the  outstanding  Common Stock into a smaller number of shares,  then in
each such case the Adjustment  Number in effect  immediately prior to such event
shall be  adjusted  by  multiplying  such  Adjustment  Number by a fraction  the
numerator  of  which  is the  number  of  shares  of  Common  Stock  outstanding
immediately  after  such  event and the  denominator  of which is the  number of
shares of Common Stock that were outstanding immediately prior to such event.

         Section 7.  Consolidation,  Merger,  etc. In case the Corporation shall
enter into any consolidation,  merger, combination or other transaction in which
the shares of Common  Stock are  exchanged  for or changed  into other  stock or
securities,  cash and/or any other property, then in any such case the shares of
Series A  Participating  Preferred  Stock  shall at the same  time be  similarly
exchanged  or changed  in an amount  per share  (subject  to the  provision  for
adjustment  hereinafter  set forth) equal to 100 times the  aggregate  amount of
stock, securities, cash and/or any other property (payable in kind), as the case
may be,  into  which or for which  each  share of  Common  Stock is  changed  or
exchanged.  In the  event the  Corporation  shall at any time  after the  Rights
Declaration  Date (i) declare any dividend on Common Stock  payable in shares of
Common Stock, (ii) subdivide the outstanding  Common Stock, or (iii) combine the
outstanding Common Stock into a smaller number of shares, then in each such case
the amount set forth in the  preceding  sentence with respect to the exchange or
change of shares of Series A Participating  Preferred Stock shall be adjusted by
multiplying  such amount by a fraction  the  numerator of which is the number of
shares  of  Common  Stock  outstanding  immediately  after  such  event  and the
denominator  of  which is the  number  of  shares  of  Common  Stock  that  were
outstanding immediately prior to such event.

         Section  8.  No  Redemption.  The  shares  of  Series  A  Participating
Preferred Stock shall not be redeemable.

         Section 9. Ranking.  The Series A  Participating  Preferred Stock shall
rank junior to all other series of the  Corporation's  Preferred Stock as to the
payment of dividends  and the  distribution  of assets,  unless the terms of any
such series shall provide otherwise.

         Section  10.  Amendment.   The  Amended  and  Restated  Certificate  of
Incorporation  of the  Corporation  shall not be  further  amended in any manner
which would materially alter or change the powers,  preference or special rights
of the Series A  Participating  Preferred  Stock so as to affect them  adversely
without  the  affirmative  vote  of the  holders  of a  majority  or more of the
outstanding shares of Series A Participating  Preferred Stock, voting separately
as a class.
<PAGE>
         Section 11. Fractional Shares.  Series A Participating  Preferred Stock
may be issued in  fractions  of a share  which  shall  entitle  the  holder,  in
proportion  to such  holder's  fractional  shares,  to exercise  voting  rights,
receive  dividends,  participate in distributions and to have the benefit of all
other rights of holders of Series A Participating Preferred Stock.

         RESOLVED  FURTHER,  that the  President or any Vice  President  and the
Secretary or any  Assistant  Secretary of this  corporation  be, and they hereby
are, authorized and directed to prepare and file a Certificate of Designation of
Rights,  Preferences and Privileges in accordance with the foregoing  resolution
and the  provisions  of Delaware  law and to take such  actions as they may deem
necessary or appropriate to carry out the intent of the foregoing resolution."

         3. That the authorized  number of Preferred Stock of the Corporation is
3,000,000 and that no such Preferred Stock has been issued.
<PAGE>



         We further  declare under penalty of perjury that the matters set forth
in the  foregoing  Certificate  of  Designation  are true and correct of our own
knowledge.

         Executed at Piscataway, New Jersey on December 6, 1996.




                                       
                                         -------------------
                                         Patrick A. McBrayer
                                         Chief Executive Officer and President




                                      
                                         ---------------------
                                         Richard H. Reisner
                                         Vice President, Chief Financial Officer
                                         and Secretary


<PAGE>
                                                                       EXHIBIT B



                           FORM OF RIGHTS CERTIFICATE 


Certificate No. R-                                                  _____ Rights


         NOT EXERCISABLE AFTER DECEMBER 19, 2006 OR EARLIER IF TERMINATED BY THE
         COMPANY OR IF THE COMPANY  EXCHANGES THE RIGHTS  PURSUANT TO THE RIGHTS
         AGREEMENT.  THE RIGHTS ARE SUBJECT TO REDEMPTION,  AT THE OPTION OF THE
         COMPANY,  AT $30.00  PER  RIGHT ON THE  TERMS  SET FORTH IN THE  RIGHTS
         AGREEMENT. UNDER CERTAIN CIRCUMSTANCES, RIGHTS BENEFICIALLY OWNED BY AN
         ACQUIRING  PERSON OR AN AFFILIATE  OR ASSOCIATE OF AN ACQUIRING  PERSON
         (AS SUCH TERMS ARE DEFINED IN THE RIGHTS  AGREEMENT) AND ANY SUBSEQUENT
         HOLDER OF SUCH RIGHTS MAY BECOME NULL AND VOID. [THE RIGHTS REPRESENTED
         BY THIS RIGHTS  CERTIFICATE ARE OR WERE BENEFICIALLY  OWNED BY A PERSON
         WHO WAS OR BECAME AN  ACQUIRING  PERSON OR AN AFFILIATE OR ASSOCIATE OF
         AN  ACQUIRING   PERSON  (AS  SUCH  TERMS  ARE  DEFINED  IN  THE  RIGHTS
         AGREEMENT).   ACCORDINGLY,  THIS  RIGHTS  CERTIFICATE  AND  THE  RIGHTS
         REPRESENTED  HEREBY  MAY  BECOME  NULL  AND  VOID IN THE  CIRCUMSTANCES
         SPECIFIED IN SECTION 7(E) OF SUCH RIGHTS AGREEMENT.]*

* The portion of the legend in bracket shall be inserted only if applicable  and
shall replace the preceding sentence.


                               RIGHTS CERTIFICATE

                                  EXOGEN, INC.


         This certifies that  ______________________,  or registered assigns, is
the  registered  owner of the  number of Rights set forth  above,  each of which
entitles the owner thereof,  subject to the terms,  provisions and conditions of
the Rights  Agreement  dated as of  December 6, 1996 (the  "Rights  Agreement"),
between Exogen, Inc., a Delaware corporation (the "Company"),  and Registrar and
Transfer Company (the "Rights Agent"),  to purchase from the Company at any time
after the  Distribution  Date (as such term is defined in the Rights  Agreement)
and prior to 5:00 p.m.,  California  time, on December 19, 2006 at the office of
the Rights Agent designated for such purpose,  or at the office of its successor
as Rights  Agent,  one  one-hundredth  of a fully paid  non-assessable  share of
Series A  Participating  Preferred  Stock,  par value  $.0001  per  share,  (the
"Preferred  Shares"),  of the  Company,  at a  purchase  price of $30.00 per one
one-hundredth of a Preferred Share (the "Purchase Price"), upon presentation and
surrender of this Rights  Certificate  with the Form of Election to Purchase and
related Certificate duly executed. The number of Rights evidenced by this Rights
Certificate (and the number of one one-hundredths of a Preferred Share which may
be purchased  upon exercise  hereof) set forth above are the number and Purchase
Price as of December 6, 1996,  based on the Preferred  Shares as  constituted at
such date.  As  provided in the Rights  Agreement,  the  Purchase  Price and the
number and kind of Common Shares or other securities which may be purchased upon
the exercise of the Rights  evidenced by this Rights  Certificate are subject to
modification and adjustment upon the happening of certain events.
<PAGE>
         This Rights Certificate is subject to all of the terms,  provisions and
conditions of the Rights Agreement,  which terms,  provisions and conditions are
hereby  incorporated  herein by  reference  and made a part  hereof and to which
Rights Agreement  reference is hereby made for a full description of the rights,
limitations  of rights,  obligations,  duties and  immunities  hereunder  of the
Rights  Agent,  the Company and the  holders of the Rights  Certificates,  which
limitations of rights include the temporary  suspension of the exercisability of
such Rights under the specific  circumstances set forth in the Rights Agreement.
Copies of the Rights Agreement are on file at the principal executive offices of
the Company and the above-mentioned office of the Rights Agent.

         Subject to the provisions of the Rights Agreement, the Rights evidenced
by this Rights Certificate (i) may be redeemed by the Company, at its option, at
a redemption  price of $.01 per Right or (ii) may be exchanged by the Company in
whole or in part for Common  Shares,  substantially  equivalent  rights or other
consideration as determined by the Company.

         This Rights  Certificate,  with or without  other Rights  Certificates,
upon  surrender at the office of the Rights Agent  designated  for such purpose,
may be exchanged for another Rights  Certificate or Rights  Certificates of like
tenor  and date  evidencing  Rights  entitling  the  holder to  purchase  a like
aggregate amount of securities as the Rights evidenced by the Rights Certificate
or Rights Certificates  surrendered shall have entitled such holder to purchase.
If this Rights  Certificate  shall be  exercised  in part,  the holder  shall be
entitled to receive upon surrender  hereof another Rights  Certificate or Rights
Certificates for the number of whole Rights not exercised.

         No  fractional  portion of less than one  one-hundredth  of a Preferred
Share will be issued upon the exercise of any Right or Rights  evidenced  hereby
but in lieu  thereof a cash  payment  will be made,  as  provided  in the Rights
Agreement.

         No holder of this  Rights  Certificate,  as such,  shall be entitled to
vote or  receive  dividends  or be  deemed  for any  purpose  the  holder of the
Preferred Shares or of any other securities of the Company which may at any time
be issuable on the exercise hereof,  nor shall anything  contained in the Rights
Agreement or herein be construed to confer upon the holder hereof,  as such, any
of the  rights  of a  stockholder  of the  Company  or any right to vote for the
election  of  directors  or upon any matter  submitted  to  stockholders  at any
meeting thereof,  or to give or withhold consent to any corporate  action, or to
receive notice of meetings or other actions  affecting  stockholders  (except as
provided  in the Rights  Agreement),  or to receive  dividends  or  subscription
rights,  or  otherwise,  until  the  Right or Rights  evidenced  by this  Rights
Certificate shall have been exercised as provided in the Rights Agreement.
<PAGE>
         This  Rights  Certificate  shall  not be  valid or  obligatory  for any
purpose until it shall have been countersigned by the Rights Agent.

         WITNESS the facsimile  signature of the proper  officers of the Company
and its corporate seal. Dated as of ___________, 19__.


ATTEST:                                     EXOGEN, INC.



                                               By:
- ---------------------                             ----------------------
Richard H. Reisner                                   Patrick A. McBrayer 
Vice President, Chief Financial Officer              Chief Executive Officer and
and Secretary                                        President





Countersigned:


REGISTRAR AND TRANSFER COMPANY,
as Rights Agent


By:   -------------------
Name:
Title:

<PAGE>
                   FORM OF REVERSE SIDE OF RIGHTS CERTIFICATE

                               FORM OF ASSIGNMENT

                (To be executed by the registered holder if such
               holder desires to transfer the Rights Certificate)


       FOR VALUE RECEIVED____________________hereby sells, assigns and transfers

unto _______________________________________________________________
                 (Please print name and address of transferee)

- ----------------------------------------------------------------------------
this Rights  Certificate,  together with all right,  title and interest therein,
and does hereby  irrevocably  constitute and appoint  __________________________
Attorney,  to  transfer  the  within  Rights  Certificate  on the  books  of the
within-named Company, with full power of substitution.


Dated: _______________, 1996


                                                     __________________________
                                                     Signature


Signature Guaranteed:

         Signatures must be guaranteed by a member firm of a registered national
securities exchange, a member of the National Association of Securities Dealers,
Inc., or a commercial bank or trust company having an office or correspondent in
the United States.
<PAGE>

                                   CERTIFICATE


         The  undersigned  hereby  certifies by checking the  appropriate  boxes
that:

                  (i) this  Rights  Certificate  [ ] is [ ] is not  being  sold,
assigned and  transferred by or on behalf of a Person who is or was an Acquiring
Person,  or an  Affiliate  or  Associate  of any such  Person (as such terms are
defined in the Rights Agreement);

                  (ii)  after  due  inquiry  and to the  best  knowledge  of the
undersigned,  it [ ] did [ ] did not acquire the Rights evidenced by this Rights
Certificate  from any  Person who is, was or  subsequently  became an  Acquiring
Person or an Affiliate or Associate of any such Person.

Dated: _______________, 1996



                                                     __________________________
                                                     Signature


Signature Guaranteed:

         Signatures must be guaranteed by a member firm of a registered national
securities exchange, a member of the National Association of Securities Dealers,
Inc., or a commercial bank or trust company having an office or correspondent in
the United States.
<PAGE>
             FORM OF REVERSE SIDE OF RIGHTS CERTIFICATE -- CONTINUED

                          FORM OF ELECTION TO PURCHASE

                      (To be executed if holder desires to
                        exercise the Rights Certificate)

To:

         The    undersigned    hereby    irrevocably    elects    to    exercise
_______________________   Rights  represented  by  this  Rights  Certificate  to
purchase the number of one one-hundredths of a Preferred Share issuable upon the
exercise of such Rights and requests  that  certificates  for such number of one
one-hundredths of a Preferred Share issued in the name of:

Please insert social security or other identifying number

_______________________________________________________________________________
                         (Please print name and address)

_______________________________________________________________________________



If such number of Rights  shall not be all the Rights  evidenced  by this Rights
Certificate,  a new Rights  Certificate for the balance remaining of such Rights
shall be registered in the name of and delivered to:

Please insert social security or other identifying number


_______________________________________________________________________________

                         (Please print name and address)

_______________________________________________________________________________


Dated:                     , 1996



                                                     __________________________
                                                     Signature
Signature Guaranteed:

         Signatures must be guaranteed by a member firm of a registered national
securities exchange, a member of the National Association of Securities Dealers,
Inc., or a commercial bank or trust company having an office or correspondent in
the United States.
<PAGE>
                                   CERTIFICATE


         The  undersigned  hereby  certifies by checking the  appropriate  boxes
that:

         (1) the Rights evidenced by this Rights Certificate [ ] are [ ] are not
being exercised by or on behalf of a Person who is or was an Acquiring Person or
an  Affiliate  or Associate of any such Person (as such terms are defined in the
Rights Agreement);

         (2) after due inquiry and to the best knowledge of the undersigned,  it
[ ] did [ ] did not acquire the Rights evidenced by this Rights Certificate from
any  Person  who is,  was or  subsequently  became  an  Acquiring  Person  or an
Affiliate or Associate of any such Person.

Dated:____________,1996



                                                     _________________________
                                                     Signature


Signature Guaranteed:

         Signatures must be guaranteed by a member firm of a registered national
securities exchange, a member of the National Association of Securities Dealers,
Inc., or a commercial bank or trust company having an office or correspondent in
the United States.
<PAGE>
             FORM OF REVERSE SIDE OF RIGHTS CERTIFICATE -- CONTINUED


                                     NOTICE


         The  signature in the foregoing  Forms of Assignment  and Election must
conform to the name as written upon the face of this Rights Certificate in every
particular, without alteration or enlargement or any change whatsoever.
<PAGE>
                                                                       EXHIBIT C


                                  EXOGEN, INC.

                             STOCKHOLDER RIGHTS PLAN

                                Summary of Rights



Distribution Transfer of Rights;       The Board of  Directors  has  declared a 
Rights Certificate:                    dividend of one Right (the  "Right") for 
                                       each outstanding  share of Common Stock, 
                                       par value $.0001,  of Exogen,  Inc. (the 
                                       "Company").  Prior  to the  Distribution 
                                       Date referred to below,  the Rights will 
                                       be  evidenced  by, and trade  with,  the 
                                       certificates for the Common Stock. After 
                                       the Distribution  Date, the Company will 
                                       mail   Rights    certificates   to   the 
                                       Company's  stockholders  and the  Rights 
                                       will become  transferable apart from the 
                                       Common Stock.                            
                                                                                
Distribution Date:                     Rights  will  separate  from the  Common 
                                       Stock  and  become  exercisable  on  the 
                                       tenth day (or such  later date as may be 
                                       determined   by  a   majority   of   the 
                                       Directors   not   affiliated   with  the 
                                       acquiring    person   or   group    (the 
                                       "Continuing  Directors")) after a person 
                                       or   group   (a)   acquires   beneficial 
                                       ownership   of  15%  or   more   of  the 
                                       Company's  Common Stock or (b) announces 
                                       a  tender   or   exchange   offer,   the 
                                       consummation  of which  would  result in 
                                       ownership by a person or group of 15% or 
                                       more of the Company's Common Stock.      
                                                                                
                                        
Preferred Stock Purchasable            After the Distribution  Date, each Right 
Upon Exercise of Rights:               will entitle the holder to purchase, for 
                                       $30.00,  a  fraction of  a  share of the 
                                       Company's  Preferred Stock with economic 
                                       terms  similar  to that of one  share of 
                                       the Company's Common Stock.       
<PAGE>
Flip-In:                               If an acquiror (an  "Acquiring  Person") 
                                       obtains  15% or  more  of the  Company's 
                                       Common Stock  (other than  pursuant to a 
                                       tender offer deemed  adequate and in the 
                                       best  interests  of the  Company and its 
                                       stockholders  by the Board of  Directors 
                                       (a "Permitted Offer")),  then each Right 
                                       (other than Rights owned by an Acquiring 
                                       Person or its  affiliates)  will entitle 
                                       the holder thereof to purchase,  for the 
                                       exercise  price,  a number  of shares of 
                                       the Company's Common Stock having a then 
                                       current   market   value  of  twice  the 
                                       exercise price.                          
                                                                                
Flip-Over:                             If,  after the Shares  Acquisition  Date 
                                       (defined below),  (a) the Company merges 
                                       into  another  entity,  (b) an acquiring 
                                       entity  merges  into the  Company or (c) 
                                       the  Company  sells more than 50% of the 
                                       Company's assets or earning power,  then 
                                       each Right  (other than Rights  owned by 
                                       an Acquiring  Person or its  affiliates) 
                                       will  entitle  the  holder   thereof  to 
                                       purchase,  for  the  exercise  price,  a 
                                       number of shares of Common  Stock of the 
                                       person   engaging  in  the   transaction 
                                       having a then  current  market  value of 
                                       twice the  exercise  price  (unless  the 
                                       transaction satisfies certain conditions 
                                       and is  consummated  with a  person  who 
                                       acquired  shares pursuant to a Permitted 
                                       Offer,  in which  case the  Rights  will 
                                       expire).                                 
                         
Exchange Provision:                    At any time  after  an event  triggering 
                                       the  flip-in  or  flip-over  rights  and 
                                       prior   to   the   acquisition   by  the 
                                       Acquiring  Person  of 50% or more of the 
                                       outstanding  Common Stock,  the Board of 
                                       Directors  of the Company  may  exchange 
                                       the Rights  (other than Rights  owned by 
                                       the Acquiring Person or its affiliates), 
                                       in  whole  or in  part,  at an  exchange 
                                       ratio of one share of  Common  Stock per 
                                       Right (subject to adjustment).           
                                        
Redemption of the Rights:              Rights   will  be   redeemable   at  the 
                                       Company's  option  for $.01 per Right at 
                                       any time on or prior  to the  tenth  day 
                                       (or such later date as may be determined 
                                       by  a   majority   of   the   Continuing 
                                       Directors)  after  public   announcement 
                                       that a person  has  acquired  beneficial 
                                       ownership   of  15%  or   more   of  the 
                                       Company's   Common  Stock  (the  "Shares 
                                       Acquisition Date").                      
<PAGE>
Expiration of  the  Rights:            The Rights expire on the earliest of (a) 
                                       December  19,  2006,   (b)  exchange  or 
                                       redemption  of the  Rights as  described 
                                       above,  or (c)  consummation of a merger 
                                       or consolidation resulting in expiration 
                                       of the Rights as described above.        
                                        
Amendment of Terms of Rights:          The terms of the  Rights  and the Rights 
                                       Agreement  may be amended in any respect 
                                       without   the   consent  of  the  Rights 
                                       holders on or prior to the  Distribution 
                                       Date;  thereafter,   the  terms  of  the 
                                       Rights and the Rights  Agreement  may be 
                                       amended   without  the  consent  of  the 
                                       Rights  holders  in  order  to cure  any 
                                       ambiguities  or to make changes which do 
                                       not  adversely  affect the  interests of 
                                       Rights holders (other than the Acquiring 
                                       Person).                                 

Voting Rights:                         Rights will not have any voting rights.

Anti-Dilution Provisions:              Rights  will have the benefit of certain
                                       customary anti-dilution provisions.     
                                       
Taxes:                                 The  Rights  distribution  should not be 
                                       taxable for federal income tax purposes. 
                                       However,   following   an  event   which 
                                       renders the Rights  exercisable  or upon 
                                       redemption  of the Rights,  stockholders 
                                       may recognize taxable income.            
                                        
The foregoing is a summary of certain principal terms of the Stockholder  Rights
Plan only and is qualified in its entirety by reference to the detailed terms of
the Rights Agreement dated as of December 6, 1996,  between the Company and the
Rights Agent.  Further details of the Rights are contained in a letter that will
be mailed to all the Company's stockholders.


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