EXOGEN INC
10-Q, 1999-08-13
ELECTROMEDICAL & ELECTROTHERAPEUTIC APPARATUS
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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                  ____________

                                    FORM 10-Q

(Mark One)
[ X ]    QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
         SECURITIES EXCHANGE ACT OF 1934

                  For the quarterly period ended June 30, 1999

                                       OR

[   ]    TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
         SECURITIES EXCHANGE ACT OF 1934

      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     (732) 981-0990

                                       N/A
- --------------------------------------------------------------------------------
               Former name, former address and former fiscal year,
                          if changed since last report.


         Indicate by check [X] whether the  registrant (1) has filed all reports
required to be filed by Sections 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  the  number of  shares  outstanding  of each of the  issuer=s
classes of common stock,  as of the latest  practicable  date Common Stock,  par
value $0.0001 per share: 12,768,241 shares outstanding at July 30, 1999.
<PAGE>

                                  EXOGEN, INC.

                          Quarterly Report on Form 10-Q

                                  June 30, 1999

                                Table of Contents



PART I--Financial Information...................................................

         Item 1--Financial Statements:

                  Consolidated Balance Sheets...................................
                  Consolidated Statements of Operations.........................
                  Consolidated Statements of Comprehensive Income...............
                  Consolidated Statements of Cash Flows.........................
                  Notes to Consolidated Financial Statements....................

         Item 2--Management's Discussion and Analysis of Financial
                  Condition and Result of Operations............................

         Item 3--Quantitative and Qualitative Disclosures About Market Risk.....

PART II--Other Information......................................................

         Item 1.  Legal Proceedings.............................................

         Item 2.  Changes in Securities and Use of Proceeds.....................

         Item 3.  Defaults Upon Senior Securities...............................

         Item 4.  Submission of Matters to a Vote of Security Holders...........

         Item 5.  Other Information.............................................

         Item 6.  Exhibits and Reports on Form 8-K..............................

Signatures......................................................................


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

                                   CONSOLIDATED BALANCE SHEETS
                                   ---------------------------
                                (in thousands, except share data)

                                                                         June 30,    September 30,
                                                                         --------    -------------
                                                                           1999          1998
                                                                         --------      --------
                                                                       (Unaudited)

                                   ASSETS
<S>                                                                      <C>           <C>
Current assets:
     Cash and cash equivalents .....................................     $  3,750      $  9,833
     Short-term investments ........................................        5,940         5,749
     Accounts receivable, net ......................................        3,827         2,703
     Inventories ...................................................        1,052           830
     Interest receivable ...........................................           85           119
     Other current assets ..........................................          350           459
                                                                         --------      --------
               Total current assets ................................       15,004        19,693
Furniture, fixtures, and equipment, net ............................          622           689
Other assets .......................................................          560           414
                                                                         --------      --------

               Total assets ........................................     $ 16,186      $ 20,796
                                                                         ========      ========


                    LIABILITIES AND STOCKHOLDERS' EQUITY

Current liabilities:
     Accounts payable ..............................................     $    605      $    691
     Accrued liabilities ...........................................        2,849         2,903
     Accrued litigation settlement--current ........................          178           424
     Other current liabilities .....................................         --             150
                                                                         --------      --------
               Total current liabilities ...........................        3,632         4,168
Accrued litigation settlement--noncurrent ..........................          331           331
                                                                         --------      --------
                Total liabilities ..................................        3,963         4,499


Commitments and contingencies (Note 2)
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
                                         EXOGEN, INC.

                                   CONSOLIDATED BALANCE SHEETS
                                   ---------------------------
                                (in thousands, except share data)
                                          (continued)

                                                                         June 30,    September 30,
                                                                         --------    -------------
                                                                           1999          1998
                                                                         --------      --------
                                                                        (Unaudited)
<S>                                                                      <C>           <C>
Stockholders' equity:
     Preferred stock, $0.0001 par value; 3,000,000 shares
          authorized as of June 30, 1999, and September 30, 1998;
          no shares issued or outstanding ..........................         --            --
     Common stock, $0.0001 par value; 27,000,000 shares authorized
          as of June 30, 1999, and September 30, 1998; 12,751,150
          shares issued and outstanding as of June 30, 1999, and
          12,703,718 issued and outstanding as of September 30, 1998            1             1
Additional paid-in capital .........................................       58,647        58,495
Accumulated other comprehensive loss ...............................         (374)         (288)
Accumulated deficit ................................................      (46,051)      (41,911)
                                                                         --------      --------

               Total stockholders' equity ..........................       12,223        16,297
                                                                         --------      --------

               Total liabilities and stockholders' equity ..........     $ 16,186      $ 20,796
                                                                         ========      ========
</TABLE>
            The  accompanying  notes are an integral part of these  consolidated
financial statements.
<PAGE>
<TABLE>
<CAPTION>
                                               EXOGEN, INC.

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


                                                         Three Months Ended          Nine Months Ended
                                                              June 30,                     June 30,
                                                       ----------------------      ----------------------
                                                         1999          1998          1999          1998
                                                       --------      --------      --------      --------
                                                            (Unaudited)                 (Unaudited)
<S>                                                    <C>           <C>           <C>           <C>
Revenues:
     Product sales ...............................     $  3,972      $  3,081      $ 10,912      $  7,595
     Revenues from development agreements ........         --             400          --             400
                                                       --------      --------      --------      --------
               Total revenues ....................        3,972         3,481        10,912         7,995
                                                       --------      --------      --------      --------

Operating costs and expenses:
     Cost of product sales .......................        1,426         1,231         3,655         3,311
     Research and development ....................          859           779         2,445         2,173
     Selling, general, and administrative ........        2,996         2,946         9,420         8,784
     Nonrecurring charge for international
          doubtful accounts ......................         --            --            --             800
                                                       --------      --------      --------      --------
              Total operating costs and expenses .        5,281         4,956        15,520        15,068
                                                       --------      --------      --------      --------

Operating loss ...................................       (1,309)       (1,475)       (4,608)       (7,073)

Other income (expense):
     Interest income, net ........................          133           158           483           514
     Other, net ..................................           (7)            2           (13)          (16)
                                                       --------      --------      --------      --------
               Total other income, net ...........          126           160           470           498
                                                       --------      --------      --------      --------

Loss before income taxes .........................       (1,183)       (1,315)       (4,138)       (6,575)

Provision for income taxes .......................            1          --               2             2
                                                       --------      --------      --------      --------

Net loss .........................................     $ (1,184)     $ (1,315)     $ (4,140)     $ (6,577)
                                                       ========      ========      ========      ========

Basic net loss per common share ..................     $  (0.09)     $  (0.11)     $  (0.33)     $  (0.56)
                                                       ========      ========      ========      ========
Diluted net loss per common share ................     $  (0.09)     $  (0.11)     $  (0.33)     $  (0.56)
                                                       ========      ========      ========      ========

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

                              CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
                              -----------------------------------------------
                                               (in thousands)

                                                             Three Months Ended        Nine Months Ended
                                                                  June 30,                 June 30,
                                                           --------------------      --------------------
                                                             1999         1998        1999          1998
                                                           -------      -------      -------      -------
                                                               (Unaudited)                (Unaudited)


<S>                                                        <C>          <C>          <C>          <C>
Net loss .............................................     $(1,184)     $(1,315)     $(4,140)     $(6,577)
Other comprehensive loss:
     Foreign currency translation adjustments ........         (30)           7          (86)         (51)
                                                           -------      -------      -------      -------

               Total other comprehensive loss ........         (30)           7          (86)         (51)
                                                           -------      -------      -------      -------


Comprehensive loss ...................................     $(1,214)     $(1,308)     $(4,226)     $(6,628)
                                                           =======      =======      =======      =======

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

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

                                                                                        Nine Months Ended
                                                                                             June 30,
                                                                                      --------------------
                                                                                        1999          1998
                                                                                      -------      -------
                                                                                           (Unaudited)
<S>                                                                                   <C>          <C>
Cash flows from operating activities:
     Net loss ...................................................................     $(4,140)     $(6,577)
     Adjustments to reconcile net loss to net cash used in operating activities:
          Depreciation and amortization .........................................         254          348
          Amortization of net discount on short- and long-term investments ......         (45)         (11)
          Amortization of nonemployee stock option/warrant compensation .........          99           90
          Provision for losses on accounts receivable ...........................         318          221
          Nonrecurring charge for international doubtful accounts ...............        --            800
          Other adjustments .....................................................        (121)         (50)
     Decrease (increase) in assets:
          Accounts receivable, net ..............................................      (1,476)        (406)
          Interest receivable ...................................................          34          (37)
          Inventories ...........................................................        (260)         692
          Other current assets ..................................................          25         (199)
          Other assets ..........................................................          58           32
     Increase (decrease) in liabilities:
          Accounts payable ......................................................         (80)         (94)
          Accrued liabilities ...................................................         (41)         614
          Accrued litigation settlement .........................................        (191)          --
          Other current liabilities .............................................        (150)         (55)
                                                                                      -------      -------
               Net cash used in operating activities ............................      (5,716)      (4,632)
                                                                                      -------      -------
Cash flows from investing activities:
     Purchase of short- and long-term investments ...............................      (9,392)      (7,000)
     Proceeds from maturity of short- and long-term investments .................       9,246        5,765
     Purchase of furniture, fixtures, and equipment .............................        (189)        (168)
                                                                                      -------      -------
               Net cash used in investing activities ............................        (335)      (1,403)
                                                                                      -------      -------
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
                                                EXOGEN, INC.

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

                                                                                        Nine Months Ended
                                                                                             June 30,
                                                                                      --------------------
                                                                                        1999          1998
                                                                                      -------      -------
                                                                                           (Unaudited)
<S>                                                                                   <C>          <C>
Cash flows from financing activities:
     Proceeds from exercise of stock options ....................................           5           10
     Proceeds from sale of common stock, net of issuance expenses ...............         (10)       7,475
                                                                                      -------      -------
               Net cash (used in) provided by financing activities ..............          (5)       7,485
                                                                                      -------      -------

Effect of exchange rate changes on cash and cash equivalents ....................         (27)         (10)
                                                                                      -------      -------

Net (decrease) increase in cash and cash equivalents ............................      (6,083)       1,440
Cash and cash equivalents, beginning of period ..................................       9,833        4,018
                                                                                      -------      -------
Cash and cash equivalents, end of period ........................................     $ 3,750      $ 5,458
                                                                                      =======      =======

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

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                   ------------------------------------------

1.        BASIS OF PRESENTATION

                  The accompanying  unaudited condensed  consolidated  financial
         statements   reflect  all  adjustments   (including   normal  recurring
         adjustments) that management  considers necessary to present fairly the
         financial position of Exogen,  Inc. ("Exogen") as of June 30, 1999, the
         results of operations and  comprehensive  income for the three and nine
         months  ended June 30,  1999 and 1998,  and the cash flows for the nine
         months then ended. The results of operations for the respective interim
         periods are not  necessarily  indicative  of the results to be expected
         for the full  year.  The  unaudited  condensed  consolidated  financial
         statements,   which   include  the  financial   position,   results  of
         operations,  comprehensive  income, and cash flows for Exogen, Inc. and
         its wholly owned subsidiary,  Exogen (Europe) GmbH, should be read with
         the  audited  consolidated  financial  statements  for the  year  ended
         September 30, 1998, included in Exogen's Annual Report on Form 10-K (as
         amended).

2.        COMMITMENTS AND CONTINGENCIES

                  Exogen is  subject to claims and  litigation  in the  ordinary
         course of business. Management is currently unaware of the existence of
         any such claims and litigation.

3.        NET LOSS PER COMMON SHARE

                  Exogen  reports net loss per common share in  accordance  with
         Statement of Financial  Accounting  Standards  No. 128,  "Earnings  per
         Share,"  which  requires  the  presentation  of both basic and  diluted
         earnings  per share.  Basic  earnings per share is computed by dividing
         net loss by the  weighted-average  common  shares  outstanding  for the
         period.  Diluted earnings per share includes  options and warrants,  if
         dilutive.  As Exogen has recorded losses during all periods  presented,
         the  options and  warrants  are  antidilutive,  and  therefore  are not
         included in the calculation of diluted earnings per share. Accordingly,
         Exogen's  basic and diluted net loss per common share do not differ for
         any period presented.

                  The weighted-average  number of shares used in the calculation
         of basic and diluted net loss per common share is as follows:
<TABLE>
<CAPTION>
                                                    Three Months Ended                 Nine Months Ended
                                                         June 30,                          June 30,
                                                 --------------------------        --------------------------
                                                    1999            1998              1999            1998
                                                -----------      ----------        ----------      ----------
<S>                                             <C>              <C>               <C>             <C>
            Weighted-average shares
                outstanding......................12,745,388      11,846,593        12,727,485      11,700,632
</TABLE>
<PAGE>
                  The   following   table   summarizes   securities   that  were
         outstanding  as of June 30, 1999 and 1998, but were not included in the
         calculation  of diluted net loss per common  share  because such shares
         are antidilutive:
<TABLE>
<CAPTION>
                                                       June 30,
                                              ------------------------
                                                 1999            1998
                                              ---------        -------
<S>                                           <C>              <C>
            Options...................        1,095,914        941,560
            Warrants..................          125,000        100,000
</TABLE>

4.        INVENTORIES

                  Inventories consist of the following:
<TABLE>
<CAPTION>
                                                 June 30,        Sept. 30,
                                                   1999            1998
                                                  ------          ------
<S>                                               <C>             <C>
            Finished goods............            $  758          $  576
            Parts and components......               294             254
                                                  ------          ------
                                                  $1,052          $  830
                                                  ======          ======
</TABLE>
5.        SUPPLEMENTAL DISCLOSURE OF CASH FLOWS INFORMATION
<TABLE>
<CAPTION>
                                                     Nine Months Ended
                                                          June 30,
                                                    --------------------
                                                      1999          1998
                                                    ------        ------
<S>                                                 <C>           <C>
           Interest paid.................           $    5        $    5
           Income taxes paid.............                1             2

</TABLE>
6.        SEGMENT INFORMATION

                  Exogen  reports its segment  information  in  accordance  with
         Statement of Financial Accounting Standards No. 131, "Disclosures about
         Segments  of an  Enterprise  and  Related  Information,"  which  Exogen
         adopted in fiscal 1998.

                  Exogen  operates  in one  line  of  business  and,  therefore,
         identifies its reportable  business segments on the basis of geography.
         This is the same  basis of  segmentation  and basis of  measurement  of
         segment  profit or loss reported in Exogen's 1998 Annual Report on Form
         10-K.  However, in fiscal 1999, Exogen began allocating to its European
         operations  certain  domestic  sales to European  customers and certain
         general  corporate  expenses.  Revenues and losses in the United States
         and  European  segments  have been  restated  for fiscal  1999 and 1998
         accordingly.  The segment profit and loss,  certain revenue and expense
         items, and certain segment assets are as follows (in thousands):
<PAGE>
<TABLE>
<CAPTION>
                                                          Three Months Ended         Nine Months Ended
                                                              June 30,                    June 30,
                                                        ----------------------      ----------------------
                                                          1999          1998          1999          1998
                                                        --------      --------      --------      --------
<S>                                                    <C>           <C>           <C>           <C>
 Revenues from external customers:
      United States ...............................     $  2,623      $  2,450      $  8,369      $  6,444
      Europe.......................................          486           170         1,082           358
      Japan .......................................          863           461         1,461           793
 Intersegment revenues:
      United States ..............................           279           140           754           375
      Europe .....................................           --            --            --            --
      Japan ......................................           --            --            --            --
 Segment (loss) profit:
      United States ...............................       (1,221)       (1,033)       (3,862)       (4,564)
      Europe .....................................          (328)         (378)         (885)       (2,133)
      Japan ......................................           365            96           607           120
Segment assets (as of June 30):
      United States ...............................       15,507        15,588        15,507        15,588
      Europe ......................................          679           607           679           607
      Japan .......................................           --            --            --            --
</TABLE>

7.        SUBSEQUENT EVENT

                  On July 25, 1999, Exogen and Smith & Nephew Acquisition, Inc.,
         a wholly owned subsidiary of Smith & Nephew,  Inc.,  Exogen's marketing
         partner in the United States, signed a definitive agreement pursuant to
         which  Smith  &  Nephew   Acquisition,   Inc.  would  acquire  all  the
         outstanding  shares of common stock of Exogen for a cash price of $5.15
         per share. The transaction  values Exogen at approximately $68 million.
         Each company's board of directors approved the transaction.

                  In accordance with terms of the transaction,  the tender offer
         for all of Exogen's  outstanding  common stock began July 30, 1999. The
         acquisition is expected to close in September 1999.
<PAGE>
                                  EXOGEN, INC.

                MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL

                       CONDITION AND RESULTS OF OPERATIONS
                       -----------------------------------

         The following is  management's  discussion of significant  factors that
affected  Exogen's interim financial  condition and results of operations.  This
should be read in  conjunction  with  Management's  Discussion  and  Analysis of
Financial Condition and Results of Operations included in Exogen's Annual Report
on Form 10-K (as amended) for the year ended September 30, 1998.

         This   Report  on  Form  10-Q   contains   certain   statements   of  a
forward-looking  nature  relating  to  future  events  or the  future  financial
performance  of Exogen.  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 Exogen with the Securities and
Exchange Commission, including Exogen's Form 10-K (as amended).

Results of Operations

Nine Months Ended June 30, 1999, and June 30, 1998

         For the nine months  ended June 30, 1999,  all product  sales were from
Exogen's Sonic Accelerated Fracture Healing System ("SAFHS(R)") devices. For the
nine months ended June 30, 1999, product sales were $10.9 million, compared with
$7.6  million  for the nine months  ended June 30,  1998.  The  increase of $3.3
million  (or 44%) was a result of a 38%  increase in volume and a 4% increase in
the average realized selling price of SAFHS devices.

         Domestic  product  sales  were $8.4  million  (or 77% of total  product
sales) for the nine months ended June 30, 1999,  an increase of $1.9 million (or
30%) over $6.4 million of domestic  product  sales for the same period in fiscal
1998.  An increase in domestic  sales volume  (26%) and in the average  realized
selling  price of SAFHS  devices  (3%) caused the  increase in domestic  product
sales.

         Product sales in Europe,  primarily derived from sales in Germany, were
$1.1 million (or 10% of total product  sales) for the nine months ended June 30,
1999, an increase of $724,000 (or 202%) over $358,000 in European  sales for the
nine months ended June 30, 1998. Three factors caused the increase:

         o    a 155% increase in sales volume;

         o    an 18%  increase in the average  realized  selling  price of SAFHS
              devices; and

         o    a fiscal 1998  adjustment (in the quarter ended December 31, 1997)
              of   approximately   $151,000,   increasing   the   reserves   for
              uncollectible  receivables in Europe and  consequently  decreasing
              revenues.

         Product sales to Teijin  Limited  ("Teijin"),  Exogen's  distributor in
Japan,  were $1.5  million (or 13% of total  product  sales) for the nine months
ended June 30,  1999,  an increase of  $668,000  (or 84%) over  $793,000 in such
sales for the nine months ended June 30, 1998  (Exogen  recorded its first sales
to Teijin in March  1998).  An increase in sales  volume  caused the increase in
product sales to Teijin.
<PAGE>
         Cost of product  sales was $3.7  million for the nine months ended June
30,  1999,  compared  with $3.3 million for the nine months ended June 30, 1998.
Included in cost of sales were royalties and the cost to  manufacture  the SAFHS
device by Exogen and an outside  source.  Gross profit for the nine months ended
June 30,  1999,  was $7.3  million (or 67% as a  percentage  of product  sales),
compared with $4.3 million (or 56%) for the nine months ended June 30, 1998. The
$3.0  million  increase (or 69%) in gross  profit was  principally  due to three
factors:

         o    an increase in sales volume;

         o    reduced per-unit product costs; and

         o    an  increase  in the  average  realized  selling  price  of  SAFHS
              devices.

         Research  and  development  expenses for the nine months ended June 30,
1999, increased to $2.4 million from $2.2 million for the nine months ended June
30,  1998.  The  increase  of  $272,000  (or 13%) was  primarily  a result of an
increased number of research projects funded.

         Selling, general, and administrative expenses for the nine months ended
June 30,  1999,  increased to $9.4 million from $8.8 million for the nine months
ended June 30, 1998. The increase of $636,000 (or 7%) resulted primarily from an
increase in  revenue-related  expenses,  principally  commissions  and bad debt,
partially offset by savings caused by the transfer of sales staff in August 1998
to Smith & Nephew, Inc., Exogen's marketing partner in the United States.

         In March  1998,  Exogen  recorded an  $800,000  nonrecurring  charge to
operations to write down certain international accounts receivable--primarily in
Germany--that exceeded 180 days outstanding.  Exogen has recorded no such charge
in fiscal 1999. The  nonrecurring  charge in fiscal 1998 was  precipitated  by a
German Supreme Social Court ruling made available to Exogen in the quarter ended
March 31, 1998. The ruling stated that reimbursement  under the  Bundesausschuss
system (the German federal  organization that establishes medical  reimbursement
policy for  outpatient  healthcare  providers) for new medical  therapies  could
occur only if the new therapy was part of the official  book of therapies of the
Bundesausschuss.  Prior to this ruling,  Exogen relied on a 1995 German  Supreme
Social  Court  ruling  that  established  that  new  medical  therapies  must be
reimbursed  under the  pre-Bundesausschuss  system if (i)  treatment  was proven
effective and economical and (ii) treatment did not exceed the scope of what was
necessary.  Exogen believed the clinical  effectiveness  of the SAFHS device and
the  device's  economic  benefits  would  satisfy the  requirements  of the 1995
ruling.  However,  based on the later ruling and the fact that the SAFHS therapy
is not part of the official book of therapies,  Exogen recorded the nonrecurring
charge. Exogen continues to pursue collection of these receivables case-by-case.

         Net interest income for the nine months ended June 30, 1999,  decreased
to $483,000  from  $514,000 for the nine months ended June 30, 1998,  consistent
with the level of funds available for investment.

         Exogen incurred a net loss of $4.1 million, or $0.33 per share, for the
nine months ended June 30, 1999,  compared with a net loss of $6.6  million,  or
$0.56 per share,  for the nine months ended June 30,  1998.  (Per share data are
based upon  weighted  average  shares  outstanding,  which  exclude  options and
warrants because they are  antidilutive.)  The decrease of $2.4 million (or 37%)
in net loss was caused principally by the factors discussed above.
<PAGE>
Three Months Ended June 30, 1999, and June 30, 1998

         For the three months ended June 30, 1999,  all product  sales were from
Exogen's SAFHS devices.  For the three months ended June 30, 1999, product sales
were $4.0  million,  compared  with $3.1 million for the three months ended June
30,  1998.  The  increase of $891,000 (or 29%) was a result of a 37% increase in
volume,  partially offset by a 6% decrease in the average realized selling price
of SAFHS devices.  Although the average  realized selling price of SAFHS devices
increased  in each  geographic  segment,  a shift in sales mix from  domestic to
international  accounts  caused an  overall  decrease  in the  average  realized
selling price.

         Domestic  product  sales  were $2.6  million  (or 66% of total  product
sales) for the three months ended June 30, 1999, an increase of $173,000 (or 7%)
over $2.5 million of domestic  product sales for the same period in fiscal 1998.
An increase in domestic  sales volume (6%) and in the average  realized  selling
price of SAFHS devices (1%) caused the increase in domestic product sales.

         Product  sales  in  Europe,   primarily   derived  from  sales  in  The
Netherlands  and in Germany,  were $486,000 (or 12% of total product  sales) for
the three  months  ended June 30,  1999,  an increase of $316,000 (or 186%) over
$170,000 in European sales for the three months ended June 30, 1998. An increase
in sales  volume  (152%)  and in the  average  realized  selling  price of SAFHS
devices (13%) caused the increase in product sales in Europe.

         Product sales to Teijin,  Exogen's  distributor in Japan, were $863,000
(or 22% of total  product  sales) for the three months  ended June 30, 1999,  an
increase of $402,000  (or 87%) over  $461,000 in such sales for the three months
ended June 30, 1998  (Exogen  recorded its first sales to Teijin in March 1998).
An increase in sales volume caused the increase in product sales to Teijin.

         Cost of product  sales was $1.4 million for the three months ended June
30, 1999,  compared  with $1.2 million for the three months ended June 30, 1998.
Included in cost of sales were royalties and the cost to  manufacture  the SAFHS
device by Exogen and an outside source.  Gross profit for the three months ended
June 30,  1999,  was $2.5  million (or 64% as a  percentage  of product  sales),
compared  with $1.9  million (or 60%) for the three  months ended June 30, 1998.
The  $696,000  increase  (or 38%) in gross  profit  was  principally  due to two
factors:

         o    an increase in sales volume and

         o    reduced per-unit product costs.

The increase in gross profit was  partially  offset by a decrease in the average
realized selling price of SAFHS devices,  which was a result of a shift in sales
mix from domestic to  international  accounts at lower average  realized selling
prices.

         Research and  development  expenses for the three months ended June 30,
1999,  increased to $859,000  from  $779,000 for the three months ended June 30,
1998.  The  increase  of $80,000 (or 10%) was caused by an  increased  number of
research projects funded.
<PAGE>
         Selling,  general,  and  administrative  expenses  for the three months
ended June 30,  1999,  increased to $3.0 million from $2.9 million for the three
months ended June 30, 1998.  The increase of $50,000 (or 2%) resulted  primarily
from an increase in revenue-related  expenses,  principally  commissions and bad
debt,  partially  offset by savings  caused by the  transfer  of sales  staff in
August 1998 to Smith & Nephew,  Inc.,  Exogen's  marketing partner in the United
States.

         Net interest income for the three months ended June 30, 1999, decreased
to $133,000 from  $158,000 for the three months ended June 30, 1998,  consistent
with the level of funds available for investment.

         Exogen incurred a net loss of $1.2 million, or $0.09 per share, for the
three months ended June 30, 1999,  compared with a net loss of $1.3 million,  or
$0.11 per share,  for the three months ended June 30, 1998.  (Per share data are
based upon  weighted  average  shares  outstanding,  which  exclude  options and
warrants  because they are  antidilutive.)  The decrease of $131,000 (or 10%) in
net loss was caused principally by the factors discussed above.

Liquidity and Capital Resources

         Since  inception,  Exogen's  expenses have  significantly  exceeded its
revenues,  resulting in an  accumulated  deficit of $46.1 million as of June 30,
1999. Through June 30, 1999, Exogen has funded its operations  primarily through
the following:

         o    private placements of equity securities;

         o    the July 1995 initial public offering of common stock;

         o    and the  August  1998 sale of  820,000  shares of common  stock to
              Smith & Nephew for aggregate net proceeds of $3.9 million.

         For the nine months ended June 30,  1999,  Exogen used net cash of $5.7
million for  operating  activities,  primarily to fund selling and marketing the
SAFHS 2000. Working capital was $11.4 million as of June 30, 1999, a decrease of
$4.2  million  (or 27%) from the  balance as of  September  30,  1998.  Exogen's
capital  expenditures  for the nine months ended June 30, 1999,  were  $189,000.
Exogen estimates that equipment and furnishings to expand in-house manufacturing
and  administrative  support  activities  will require  capital  expenditures of
approximately $300,000 during fiscal 1999 and $450,000 during fiscal 2000.

         From  December  1995 through June 30,  1999,  Exogen has recorded  $1.9
million of revenues  representing  milestone payments under Exogen's development
agreements with Teijin:

         o    $1.4 million related to the SAFHS development agreement and

         o    $500,000 related to the mechanical-stress agreement.

All potential  milestone payments under the SAFHS agreement have been earned and
paid.
<PAGE>
         Exogen  plans to  finance  its  capital  needs  from  existing  capital
resources,  which Exogen  believes  will be  sufficient  to fund its  operations
through June 2000.  Exogen has not initiated plans for funding beyond such time.
However, if necessary, Exogen would consider other sources of financing, such as
private placements, strategic alliances, and the sale of assets, but there is no
assurance  that  such  financing  would be  available  when  needed  or on terms
acceptable  to  Exogen.  If  adequate  funds are not  available,  Exogen  may be
required to reduce its fixed costs and delay,  reduce,  or eliminate  certain of
its activities, which would have a material adverse effect on Exogen's business,
financial condition, results of operations, and cash flows.

Recent Events

         On July 25, 1999,  Exogen  entered into an Agreement and Plan of Merger
with  Smith & Nephew,  Inc.  and its  wholly  owned  subsidiary,  Smith & Nephew
Acquisition,  Inc.,  pursuant to which Smith & Nephew  Acquisition,  Inc.  would
acquire all the outstanding shares of common stock of Exogen for a cash price of
$5.15 per share,  subject to certain  conditions  contained  therein.  Under the
terms of the  transaction,  Smith & Nephew  Acquisition,  Inc.  began the tender
offer  for all of  Exogen's  outstanding  common  stock  on July 30,  1999.  The
acquisition  is expected to close in September  1999.  There can be no assurance
that the tender offer will be  successfully  completed  or that the  acquisition
will close on a timely basis, or at all.

Accounts Receivable and Related Reserves

         Exogen believes its accounts  receivable  balance of $3.8 million as of
June 30, 1999, net of reserves of $5.0 million,  properly  reflects  anticipated
collections.   Accounts   receivable  reserves  have  increased  $644,000  since
September  30,  1998,  as a result  of higher  revenue  levels  and the  delayed
write-off of older  claims as Exogen  continues  to actively  pursue  payment of
these  claims.  Reserves  against  gross  accounts  receivable  are comprised of
allowances  for returns,  pricing  adjustments,  and bad debts.  Exogen  records
revenues  net of returns  and  pricing  adjustments,  while bad debt  expense is
recorded as a "Selling, general, and administrative" expense.

         The largest  component  of the  reserves is the  allowance  for pricing
adjustments, which totals $3.2 million as of June 30, 1999. This allowance is an
estimate  of  adjustments  that  may be  made  to  Exogen's  invoiced  price  by
third-party  payors,   primarily  medical  insurance  companies  and  government
entities,  who are the principal  reimbursers for Exogen's device.  Based on fee
schedules derived by third-party payors or on provisions in patients'  insurance
policies, these third-party payors may limit, modify, or deny the amount charged
for the SAFHS  therapy.  Exogen  determines  this reserve based upon  historical
payment patterns within various payor categories,  and also considers changes in
economic or other conditions that could affect the ability of third-party payors
to meet  their  obligations.  Since the  collection  process  involves  multiple
parties  (primary  insurers,  secondary  insurers,  and  patients) and since the
appeals  process in  collecting  medical  claims can be lengthy and  cumbersome,
accounts can age over an extended period of time.

         Exogen  provides  additional  reserves  on older  claims to reflect the
reduced  probability of collections on such claims,  but does not write off such
amounts until Exogen determines that the claim is uncollectible  based on one or
more of the following factors:
<PAGE>
         o    discussion  and  correspondence   from  the  payor  regarding  the
              reason(s) for denied payment;

         o    Exogen's  ability  to  provide  additional  information  needed to
              satisfy the third-party payor;

         o    economic or other  conditions  that surface  regarding the payor's
              ability to pay a claim; and

         o    the age of the invoice.

         Early in its  operating  history,  Exogen had  insufficient  historical
information  from which to analyze and establish its write-off  practices.  As a
result,  Exogen  used  predetermined  time  criteria  for  writing  off  account
balances. Specifically,  Exogen wrote off domestic receivable balances that were
older than eight months. As Exogen gained more experience in collecting accounts
and as it assembled  additional  historical  data, it found that  collections of
older accounts were possible. This data included information on Exogen's history
in appealing denied and/or reduced payments. As a result, in fiscal 1997, Exogen
adjusted its write-off  practices to cease the  automatic  write-off of accounts
older than eight  months.  Consequently,  accounts may now age longer than eight
months, but appropriate  reserve levels are maintained and/or increased on these
accounts  to cover  their  expected  collectibility.  Since a larger  reserve is
required on older accounts,  this adjustment in Exogen's write-off practices has
increased not only the dollar amount of the  allowances  but also the percentage
of the allowances relative to the gross accounts receivable  balances.  However,
the net accounts  receivable balance continues to reflect the amount that Exogen
expects to collect.  The timing of the  write-offs has no impact on the expected
collection levels or on liquidity.

         Of  the  net  accounts   receivable  as  of  June  30,  1999,  $379,000
represented European accounts  receivable.  The European accounts receivable was
net of a March 1998 nonrecurring  write-down of $800,000 to reflect  anticipated
reduced collectibility.  Although Exogen continues to pursue collection of these
written-down European receivables  case-by-case,  collections have been limited,
and Exogen is not relying on the  collection of these  receivables  to meets its
liquidity requirements.

Year 2000 Compliance

         The Year 2000  compliance  issue  results from the inability of systems
that utilize  computer  programs to properly process dates that fall in the year
2000 and beyond.  This issue arises  because many such programs  were  developed
using two digits rather than four digits to identify the  applicable  year. As a
result, programs that use time-sensitive calculations may not function correctly
in the year 2000.  Those programs  developed using four-digit years are probably
Year  2000   compliant;   however,   all  other  programs  will  likely  require
modification  and/or  replacement to be compliant.  The Year 2000 issue not only
affects  computer  hardware and software,  but also can affect equipment used in
the  operations of Exogen,  and extends to the systems of outside  suppliers and
customers, upon which Exogen relies. Failure to address the Year 2000 issue on a
timely  basis,  or at all, for critical  programs used by Exogen could result in
system failures or  miscalculations,  which could have a material adverse effect
on Exogen's  business,  financial  condition,  results of  operations,  and cash
flows.
<PAGE>
State of Readiness

         Exogen  performed  an initial  assessment  of its Year 2000  compliance
during  fiscal  1998.  Subsequently,  Exogen  formed  a Year  2000  task  force,
comprised of employees across all functions, that performed a detailed review of
Exogen's operations for Year 2000 compliance.  The task force manager reports to
the Chief Financial Officer,  and updates are provided to the Board of Directors
quarterly (or more  frequently,  if needed).  During its review,  the task force
identified  compliance  deficiencies.  Certain  deficiencies  have  already been
corrected;  in other  cases,  the task force is  preparing  recommendations  for
corrective actions. Once the recommendations have been approved,  the task force
will implement and monitor the corrective actions prior to December 31, 1999.

         The following  information  summarizes the review performed by the Year
2000 task force in the principal areas of exposure,  and the corrective  actions
that Exogen has implemented to date:

         SAFHS Device. Exogen tested the SAFHS device and expects it to function
properly in the Year 2000.  Although  the device  contains a program that uses a
two-digit year for recording data, the functions performed by the device are not
affected.  Certain  custom-developed  software  used by Exogen to  analyze  data
collected by the device has been modified to interpret  the  two-digit  data. No
further actions are anticipated.

         Information Systems Hardware and Software. During the second quarter of
fiscal  1999,  an  independent  consulting  firm  performed a review of Exogen's
information  systems hardware and software.  The results  indicated that certain
software upgrades, in addition to selected hardware replacements, were necessary
for Year 2000  compliance.  Exogen  installed  these  upgrades and  replacements
during the third quarter of fiscal 1999. A test of Exogen's  computer network to
verify Year 2000 compliance under simulated conditions is planned for the fourth
quarter of fiscal 1999.

         Custom-Developed  Business  Applications.  Exogen uses custom-developed
software to run certain critical  operations.  Such software was developed to be
Year  2000   compliant.   Exogen  has  not  found  any   significant   areas  of
noncompliance,  but testing will continue through 1999. If any significant areas
of noncompliance are found, programming  modifications will occur using Exogen's
application development vendor.

         Third-Party Business Software. Exogen uses various third-party software
to perform certain business processes (including purchasing,  payroll, and stock
administration)  and certain business functions  (including  spreadsheets,  word
processing,  and graphics). Many of these vendors have informed Exogen that they
are addressing the Year 2000 issue.  In some cases,  these vendors are upgrading
their  current  software.  In other  cases,  Exogen  will need to  purchase  new
software.  Since Exogen regularly  upgrades its software to the latest versions,
the  costs  associated  with  certain  of  these  upgrades  are  part of  normal
operations.  Other  software,  if its  functionality  no longer  meets  business
requirements,  would  also be  replaced  as part of  normal  operations.  Exogen
continues to upgrade and/or replace any  third-party  business  software that is
not Year 2000 compliant,  and anticipates to complete this process by the fourth
quarter of fiscal 1999.

         Other Equipment Using Computer Programs.  Exogen uses various equipment
to  handle   functions   performed  within  Exogen,   including   manufacturing,
telecommunicating,  photocopying, and faxing. Some of this equipment is not Year
2000  compliant.  Exogen  has  replaced  or  upgraded  some of the  noncompliant
equipment  during the first nine months of fiscal 1999, and will make additional
replacements or upgrades during the balance of 1999.
<PAGE>
         Suppliers. Exogen relies on outside organizations to supply, in various
degrees, information, goods, and services, including the following:

         o    supplies, raw materials, and finished goods;

         o    payroll services;

         o    banking/financial services;

         o    distribution services; and

         o    utilities/communications services.

Exogen has received  information  from some suppliers  regarding their Year 2000
preparedness.  These  suppliers  are  either  compliant  or claim  they  will be
compliant  prior to the year 2000. In other cases,  where possible and critical,
Exogen is investigating the suppliers' Year 2000 compliance.  Where the supplier
is critical and it is  reasonably  likely that the supplier  will be affected by
the Year 2000 issue,  Exogen plans to stock additional  inventory and/or qualify
other suppliers to mitigate any disruption to operations. However, Exogen cannot
guarantee the  availability of additional  supply or the Year 2000 compliance of
alternative vendors. The failure of key suppliers to be Year 2000 compliant,  on
a timely  basis or at all,  could have a  material  adverse  effect on  Exogen's
business, financial condition, results of operations, and cash flows.

         Customers.  Exogen's customer base includes physicians,  patients,  and
third-party  payors.  The Year 2000 issue is not  expected to affect the flow of
prescriptions for the device from physicians,  nor the use of the product by the
patient.  However, Exogen relies on third-party  reimbursement  organizations at
the state,  federal,  and private levels to pay for Exogen's device.  Exogen has
received reimbursement from over 850 third-party payors, although there is not a
significant  concentration  with any  particular  payor.  Exogen may  attempt to
assess the impact of the Year 2000 issue on  certain  payors.  If a  significant
percentage  of payors do not  address  the Year  2000  issue on a timely  basis,
Exogen's cash flow could be materially  reduced until such issues are corrected.
Exogen may consider  financing  alternatives  if it is reasonably  likely that a
significant  portion of its cash flows could be impacted and existing  resources
are not  sufficient to cover such  exposure.  The inability of payors to achieve
Year 2000  compliance  could affect their ability to make timely,  accurate,  or
complete  payments,  which  could have a  material  adverse  effect on  Exogen's
business, financial condition, results of operations, and cash flows.

         Marketing  Partners.  Exogen  relies on Smith & Nephew to  provide  the
required sales  organization and related support to sell the SAFHS device in the
United States and the United  Kingdom.  In Japan,  Exogen is dependent on Teijin
for the distribution of the SAFHS device.  There are no current computer systems
connecting  Exogen  with  either of its two  marketing  partners.  However,  the
ability  of Smith & Nephew  and  Teijin  to  effectively  function  as  business
organizations,  and to effectively perform the functions on which Exogen relies,
is dependent  on each  organization  addressing  the Year 2000 issue on a timely
basis. Exogen continues to investigate each organization's state of preparedness
to determine if any significant risks exist for Exogen,  and, if so, Exogen will
develop mutual  actions needed to mitigate those risks.  The inability of either
of these  marketing  partners  to  properly  address  the Year 2000 issue in its
business  operations could have a material adverse effect on Exogen's  business,
financial condition, results of operations, and cash flows.
<PAGE>
Risks

         As  discussed  above,  Exogen is not  currently  aware of any Year 2000
compliance  issues that exist,  or that cannot be corrected  on a timely  basis,
relating to its:

         o    product;

         o    information systems hardware and software;

         o    custom-developed applications;

         o    general business software; and

         o    other equipment that uses computer programs.

As a  result,  Exogen  does not  believe  that any of these  areas  will  have a
material adverse effect on Exogen's business,  financial  condition,  results of
operations,  and cash flows.  There can be no assurances,  however,  that Exogen
will not find Year 2000  issues in these  areas as  further  compliance  testing
occurs, or that such issues, if found, can be corrected on a timely basis.

          Exogen  relies  on, and will  continue  to rely on,  third  parties to
provide:

         o    equipment, goods, and services;

         o    reimbursement for the SAFHS device; and

         o    marketing and distribution support for the SAFHS device.

There can be no assurance that these third parties will adequately  address Year
2000 compliance  issues or that contingency  plans in certain areas are possible
or practical.  As a result, there could be a material adverse effect on Exogen's
business, financial condition, results of operations, and cash flows.

Costs

         Certain  costs in  addressing  the  Year  2000  issue  would be part of
Exogen's  normal  operating  expenses,  regardless  of whether a Year 2000 issue
existed.  However, Exogen does expect to incur additional expenses during fiscal
1999 that are  solely  for Year 2000  compliance  purposes.  Such  costs are not
expected to be material.  Based on the review discussed above,  Exogen estimates
the cost to achieve  Year 2000  compliance  will be  approximately  $150,000  in
fiscal  1999.  Exogen has incurred  approximately  $122,000 of these costs as of
June 30, 1999.

Contingency Plan

         Exogen  expects to be  compliant  prior to the year 2000,  and does not
foresee  significant  risks associated with achieving such compliance.  However,
certain risks exist over which Exogen has little or no control. To mitigate such
risks,  the Year 2000 task force will  develop a  contingency  plan by using the
most "reasonably  likely" worst-case scenario and by assessing the critical Year
2000 risks to Exogen.  Exogen  anticipates  that such a contingency plan will be
developed  by  the  end  of  the  fourth  quarter  of  fiscal  1999.  Like  many
organizations,  Exogen does not have  previous  experience  with issues like the
Year  2000  issue.  However,   Exogen  believes  it  is  developing  appropriate
strategies to address the issue, but such strategies do not guarantee success in
a timely manner, or at all.
<PAGE>
         These  statements  concerning  the Year 2000  compliance  issue contain
forward-looking statements that involve risks and uncertainties that could cause
actual  results  to  differ   materially  from  those  in  the   forward-looking
statements.   There  can  be  no   assurance   that  any   estimates   or  other
forward-looking  statements  will be achieved,  and actual  results could differ
significantly  from those  planned or  contemplated.  Exogen plans to update the
status of its Year 2000 preparedness as necessary in its periodic filings and in
accordance with applicable securities laws.

Business Considerations

History of Losses and Expectation of Continued Losses at Least Through 2000

         We have had a history of substantial net losses since our inception. We
incurred  net losses of $4.1  million for the nine months  ended June 30,  1999,
$7.6 million for the year ended  September 30, 1998,  $11.2 million for the year
ended  September 30, 1997,  and $10.6  million for the year ended  September 30,
1996. As of June 30, 1999, we had an accumulated  deficit of $46.1 million.  The
net losses we have  incurred to date and the net losses we expect to continue to
incur  for at least  the next  two  years  have  been  due to  several  factors,
including the following:

         o    engineering    and   developing   the   SAFHS   device   and   the
              mechanical-stress device;

         o    conducting    clinical   trials   for   the   SAFHS   device   and
              mechanical-stress device;

         o    obtaining FDA approval of the SAFHS device;

         o    developing and expanding our marketing,  sales,  and  distribution
              network domestically and internationally;

         o    expanding   our   reimbursement    activities   domestically   and
              internationally; and

         o    expanding in-house manufacturing capability.

         Although we have been  marketing  and selling  the SAFHS  device  since
1994,  we  are  still  experiencing   material  losses.  We  have  not  achieved
profitability, and we expect to continue to incur operating losses at least into
fiscal 2001.  Although our revenues have grown in recent quarters,  we cannot be
certain that we will achieve sufficient  revenues for profitability.  Our future
revenues  and  profitability,  if any,  are  critically  dependent on whether we
successfully  market and sell, and obtain  reimbursement  for, the SAFHS device.
Even if we do achieve profitability, we cannot be certain that we can sustain or
increase profitability on a quarterly or annual basis in the future.

We May Require Additional Financing

         Based on our current level of operations,  we believe that our existing
capital  resources  will be  sufficient  to meet our needs  through  June  2000.
However, this is a forward-looking statement, and no assurance can be given that
there will be no change that would  consume  available  resources  significantly
before such time. After that time, we may not generate sufficient cash flow from
operations  or be able to raise  capital in  sufficient  amounts to enable us to
operate  our  business.  If  necessary,  we  would  consider  other  sources  of
<PAGE>
financing,  such as private  placements,  strategic  alliances,  and the sale of
assets,  but we cannot assure you that such  financing  would be available  when
needed or on terms acceptable to us. If adequate funds are not available, we may
be required to reduce our fixed costs and delay, reduce, or eliminate certain of
our  activities,  which would  materially  and  adversely  affect our  business,
financial condition, results of operations, and cash flows.

Substantial Dependence on the SAFHS Device; Uncertainty of Market Acceptance

         Our future growth depends  substantially  on the commercial  success of
the SAFHS  device.  All of our product  revenues  are derived  from sales of the
SAFHS  device.  We expect the SAFHS device to continue to account for all of our
product revenues for the foreseeable  future.  Our long-term success will depend
on the following:

         o    successful  domestic and  international  commercialization  of the
              SAFHS device for its approved  uses,  including the ability of our
              exclusive U.S. distributor, Smith & Nephew, to successfully market
              the SAFHS device in the United States;

         o    whether  the  medical   community   will  accept  the   ultrasound
              technology of the SAFHS device as a safe and  effective  method of
              treating fresh, bone fractures;

         o    whether third-party payors, including traditional  fee-for-service
              insurers,  workers' compensation insurers,  HMOs and other managed
              care    organizations,     automobile    insurers,     third-party
              administrators,  Medicare,  and other  government  entities,  will
              provide third-party reimbursement of the SAFHS device; and

         o    development  and  regulatory  approval  of the  SAFHS  device  for
              additional uses.

         If the market does not accept the SAFHS device, our business, financial
condition,  results  of  operations,  and  cash  flows  will be  materially  and
adversely affected.

Substantial Dependence on Smith & Nephew U.S. Distribution Arrangement

         Our future growth depends substantially on the ability of our exclusive
U.S. distributor, Smith & Nephew, to successfully market the SAFHS device in the
United States.  On August 10, 1998, Smith & Nephew acquired  exclusive rights to
market  the  SAFHS  device  in the  United  States,  under a  multi-year  master
agreement,  a  U.S.  sales  representative   agreement,  and  a  stock  purchase
agreement. As a result, we are no longer involved in any direct sales activities
relating  to the SAFHS  device in the United  States.  Although  the U.S.  sales
representative  agreement has a term of 10 years, it may be terminated by mutual
agreement  of Exogen and Smith & Nephew,  or by Smith & Nephew in the event of a
default by Exogen.

         We cannot assure you that Smith & Nephew will succeed in its efforts to
market the SAFHS  device.  Smith & Nephew's  sales  personnel  do not have prior
experience  in the sale or use of the SAFHS  device,  although we are  providing
them with training and other support. Although we believe that Smith & Nephew is
economically  motivated to succeed in performing its responsibilities  under the
agreements,  the  amount of  resources  and time  Smith & Nephew  devotes to its
<PAGE>
responsibilities  is not within our control,  and therefore we cannot assure you
that Smith & Nephew  will  perform  its  obligations  as  expected.  If the U.S.
distribution  arrangement  with  Smith  &  Nephew  is not  successful  or if the
arrangement  is  terminated,  our  business,  financial  condition,  results  of
operations, and cash flows will be materially and adversely affected.

Substantial  Dependence  on Third  Parties in Europe and Japan to Sell the SAFHS
Device

         We depend on  independent  distributors,  sales  agents,  and marketing
partners  to sell the SAFHS  device in  Europe,  Japan,  and other  territories.
Revenues derived from  international  sales of the SAFHS device  represented 23%
for the nine months ended June 30, 1999,  19% for the year ended  September  30,
1998,  18% for the year ended  September  30,  1997,  and 14% for the year ended
September 30, 1996.

         Through a subsidiary  in Germany,  we began  selling and  marketing the
SAFHS  device in Europe in  February  1996.  We also sell and  market  the SAFHS
device in Europe  through  independent  distributors  and sales agents.  We have
recorded sales in Germany, Austria, Holland, Denmark, Switzerland,  Belgium, the
United Kingdom,  and Israel.  Revenues derived from sales of the SAFHS device in
Europe  represented 10% for the nine months ended June 30, 1999, 6% for the year
ended September 30, 1998, 18% for the year ended September 30, 1997, and 14% for
the year ended  September  30,  1996.  Most of our sales of the SAFHS  device in
Europe are derived from Germany,  where we receive  limited local  reimbursement
only on a case-by-case  basis. Our European  accounts  receivable as of June 30,
1999,  net of allowances  for returns,  pricing  adjustments,  and bad debt, was
$379,000.

         In Japan, we sell the SAFHS device to our exclusive distributor, Teijin
Limited,  a Japanese  corporation.  We are  responsible  for  manufacturing  and
supplying  the SAFHS  device to Teijin for  clinical  trials and sales in Japan,
while Teijin is responsible for obtaining  regulatory approval and for marketing
and distributing  the SAFHS device in Japan. In May 1998,  Teijin announced that
the Health and Welfare  Ministry  of Japan had  approved  reimbursement  for the
SAFHS device,  which was the final  approval  Teijin needed to begin  commercial
distribution  of the SAFHS device in Japan.  In June 1998,  Teijin began to sell
the SAFHS  device in Japan.  Exogen's  revenues  derived from sales of the SAFHS
device to Teijin  represented  13% for the nine months ended June 30, 1999,  and
13% for the year ended September 30, 1998.  Most of Teijin's  purchases of SAFHS
devices in fiscal  1998,  which were  primarily  in the second half of the year,
represented  an  initial  inventory  build-up  by  Teijin  to  begin  commercial
distribution in Japan.  Purchases by Teijin in fiscal 1999 should be principally
to restock the inventory that Teijin sells.

         Under the distribution  arrangement with Smith & Nephew, Smith & Nephew
has an option  to  obtain  exclusive  distribution  rights  to the SAFHS  device
worldwide, except for Japan. In April 1999, we completed an agreement with Smith
& Nephew,  whereby it obtained the  exclusive  distribution  rights to the SAFHS
device in the United  Kingdom.  We cannot  assure  you that Smith & Nephew  will
exercise its option to obtain worldwide (except for Japan)  distribution  rights
to the SAFHS device. We also cannot assure you that the existence of this option
will not  materially  and  adversely  affect our ability to  maintain  effective
distribution  arrangements  in  international  markets,  pending the exercise or
expiration of this option.
<PAGE>
         We cannot assure you that our independent  distributors,  sales agents,
and marketing partners will succeed in marketing and selling the SAFHS device in
Europe,  Japan, and other  territories.  Each of the foreign markets in which we
sell, or plan to sell, our products has separate regulatory and product approval
requirements.  We cannot assure you that we will be able to obtain the necessary
regulatory  approvals of the SAFHS device in foreign markets. If our independent
distributors,  sales  agents,  and  marketing  partners  are not  successful  in
marketing and selling the SAFHS device in Europe,  Japan, and other territories,
our business,  financial condition,  results of operations, and cash flows could
be materially and adversely affected.

Risks Associated with International Operations

         Our international  operations are subject to inherent risks,  including
the following:


         o    fluctuations in currency exchange rates;

         o    regulatory and product approval requirements;

         o    tariffs and other trade barriers;

         o    greater  difficulty in accounts  receivable  collection and longer
              collection periods;

         o    reimbursement approvals, both government and private;

         o    difficulties and costs of staffing and managing foreign operations
              and distributors;

         o    potentially adverse tax consequences;

         o    reduced  protection  for  intellectual  property  rights  in  some
              countries, including restrictions on repatriation of earnings;

         o    burdens of complying with a wide variety of foreign laws;

         o    the impact of recessions in economies outside the United States;

         o    political and economic instability; and

         o    seasonal  reductions in business activity during the summer months
              in Europe and other parts of the world.

         In addition, our international  operations and sales are denominated in
local foreign currencies.  In Japan, where we do not have operations,  our sales
to  Teijin  are  denominated  in U.S.  dollars.  We do not  currently  engage in
currency hedging activities.

         If we  fail to  successfully  market  and  sell  the  SAFHS  device  in
international markets, our business, financial condition, results of operations,
and cash flows could be materially and adversely affected.

Quarterly Operating Results Are Subject to Significant Fluctuations

         Our revenues and operating results may vary  significantly from quarter
to quarter due to a number of factors,  not all of which are within our control.
These factors include the following:
<PAGE>
         o    the success of our exclusive U.S. distributor,  Smith & Nephew, in
              marketing the SAFHS device in the United States;

         o    the timing of sales of the SAFHS device;

         o    the mix of sales of the SAFHS  device  in the  United  States  and
              Europe and to Japan;

         o    the timing of reimbursement  approval and payments by governmental
              authorities and third-party payors;

         o    new  product  introductions  by us or  our  competitors;

         o    expenses incurred in the research and development of new products;

         o    changes in our pricing policies or those of our competitors;

         o    timing of regulatory actions;

         o    general economic and market conditions;

         o    the Asian economic crisis
              and instability; and

         o    currency fluctuations.

         Our revenues for the foreseeable  future are almost entirely  dependent
on sales of the SAFHS device.  If revenues grow slower than we  anticipate,  our
business,  financial  condition,  results of operations,  and cash flows will be
materially and adversely affected.

Dependence on Third-Party Reimbursement

         Successful  sales of the SAFHS  device in the  United  States,  Europe,
Japan,  and other  territories  will  depend,  in part,  on  whether  we will be
reimbursed  by  third-party  payors,   including   traditional   fee-for-service
insurers,   workers'  compensation   insurers,   HMOs  and  other  managed  care
organizations,  automobile insurers,  third-party administrators,  Medicare, and
other  government  entities.   There  is  significant   uncertainty   concerning
third-party  reimbursement  for the use of any medical device  incorporating new
technology,  such as the  SAFHS  device.  Third-party  payors  are  increasingly
challenging  the  price  of  medical  devices,  and as a  result,  are  limiting
reimbursement  coverage for medical devices and, in many instances,  are putting
pressure on medical suppliers to lower their prices.  Legislative  bodies in the
United States and around the world  continue to propose  fundamental  reforms in
the health care  industry  that could  affect the  availability  of  third-party
reimbursement,  and  we  cannot  predict  the  timing  or  effect  of  any  such
legislation.

         United States.  We cannot assure you that costs associated with medical
devices  incorporating  new  technology,  such  as the  SAFHS  device,  will  be
reimbursed. To expedite reimbursement for SAFHS devices in the United States, we
seek reimbursement  approval from third-party  payors,  when possible,  prior to
shipping  the  devices.   Regardless  of  the   availability  of   reimbursement
preapproval,  our  reimbursement  staff works closely with  third-party  payors,
pursuing  reimbursement  case-by-case.  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. Also, new technologies are often prescribed for uses other than those
<PAGE>
approved   by  the  FDA  (such   prescriptions   are   defined   as   "off-label
applications"),  for  which  reimbursement  by  third-party  payors  may  not be
available. An increasing number of third-party payors and managed care plans are
also  beginning to require  evidence that the technology is cost  effective.  We
have obtained a nationally  recognized  product code for the ultrasound  device,
and this code may expedite  reimbursement  from third-party payors for the SAFHS
device.  However,  we  cannot  assure  you  that  such  codes  will be  utilized
appropriately, or at all.

         We  have  developed  a  multi-level  program  to  obtain  coverage  and
reimbursement  from third-party  payors for the SAFHS device as a new treatment.
The  SAFHS  device is  classified  by  third-party  payors  as  durable  medical
equipment.  Although we have not received broad approval from any  reimbursement
authority  for  payment of the SAFHS  device,  we have  received  approval  from
various third-party payors case-by-case.

         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. In August 1996, HCFA's
Technology  Advisory Committee  recommended that the SAFHS device not be covered
under  the  Medicare  program.  The  committee's   recommendation  stated,  "The
available  data,  although  demonstrating  a reduction  in  physician-determined
healing time for the study population,  could not be generalized to the Medicare
population  in a way that would allow a  conclusion  that SAFHS was an effective
procedure."  Since that time,  we have  continued  to pursue  coverage for SAFHS
through  meetings with HCFA staff, and have provided  additional  support of the
clinical  benefits of the SAFHS therapy,  including  information  related to the
Medicare population.  In addition, we have been working with consultants and the
Health  Industry  Manufacturers  Association to pursue various avenues to obtain
Medicare  coverage for the SAFHS device.  To date, we have been unable to change
the Medicare  noncoverage  decision;  however,  we have an ongoing dialogue with
HCFA staff.  The United States  Congress has the power to  significantly  reduce
Medicare and Medicaid expenditures, and considers from time to time proposals to
reduce such expenditures.  We cannot predict when Congress may enact legislation
reducing Medicare and Medicaid expenditures, and if such legislation is enacted,
what  effect,  if any,  such  legislation  may have on our  business,  financial
condition, results of operation, and cash flows.

         We  cannot   assure  you  that  we  will  be  successful  in  obtaining
third-party  reimbursement from third-party payors,  including Medicare, or that
third-party payors will recommend that their programs cover the SAFHS device. If
we are unable to obtain adequate third-party reimbursement for the SAFHS device,
our business, financial condition, results of operations, and cash flows will be
materially and adversely affected.

         International.  Our international reimbursement plan varies by country.
In Germany,  Holland,  and France, we are using indigenous clinical data as well
as data collected in the United States on the  effectiveness of the SAFHS device
to support our filings for reimbursement coverage.

         The operating  loss for fiscal 1998  includes an $800,000  nonrecurring
charge, recorded in the three months ended March 31, 1998, to write down certain
international accounts  receivable--primarily in Germany--that exceeded 180 days
outstanding. The nonrecurring charge was precipitated by a German Supreme Social
Court ruling made  available to Exogen in the quarter ended March 31, 1998.  The
ruling stated that reimbursement  under the  Bundesausschuss  system (the German
federal   organization  that  establishes  medical   reimbursement   policy  for
<PAGE>
outpatient  healthcare  providers) for new medical therapies could occur only if
the  new  therapy  was  part  of  the   official   book  of   therapies  of  the
Bundesausschuss.  Prior to this ruling,  Exogen relied on a 1995 German  Supreme
Social  Court  ruling  that  established  that  new  medical  therapies  must be
reimbursed  under the  pre-Bundesausschuss  system if (i)  treatment  was proven
effective and economical and (ii) treatment did not exceed the scope of what was
necessary.  Exogen believed the clinical  effectiveness  of the SAFHS device and
the  device's  economic  benefits  would  satisfy the  requirements  of the 1995
ruling.  However,  based on the later ruling and the fact that the SAFHS therapy
is not part of the official book of therapies,  Exogen recorded the nonrecurring
charge.

         To assist in the collection of  outstanding  claims and to expedite the
reimbursement process on future claims, Exogen is seeking nationwide approval by
the  Bundesausschuss.  To this end, in August  1997,  Exogen  submitted a formal
application  to the  National  Krankenkasse,  which was the  predecessor  to the
Bundesausschuss.  The  application  process  includes  scientific  and  economic
assessments.  In August 1998, the Minister of Health accepted the recommendation
of the Bundesausschuss not to approve national  reimbursement for SAFHS therapy.
Exogen is appealing the Minister of Health's decision through administrative and
legal channels.  Exogen has also filed a lawsuit against the  Bundesausschuss to
challenge its decision. Both actions are being actively pursued at this time.

         Because  there is no  nationwide  reimbursement  approval for the SAFHS
device by the  Bundesausschuss,  Exogen  has  adopted  the  policy  that,  since
September  1997, for each  prescription  submitted to Exogen in Germany,  Exogen
ships the SAFHS  device only after  receiving  reimbursement  approval  for that
device. This preapproval involves a case-by-case review by a local reimbursement
authority,  which has the  discretion to reimburse for the device  regardless of
the  decision  of the  Bundesausschuss.  The  local  decision  is  based on data
supplied by Exogen and the prescribing physician.

         In Holland,  we have  received  approval  from the  Ministry of Health,
Welfare,  and Sports of The  Netherlands  for the  nationwide  reimbursement  of
Exogen's  SAFHS device for the  treatment of nonunion  fractures  older than six
months. The approval,  effective April 1, 1999, was based on an extensive review
by the Ziekenfondsraad (Sick Fund Council) of the clinical efficacy and economic
benefits of SAFHS therapy.

         In France,  we have applied to be listed on the Tarif  Interministeriel
des Prestations  Sanitaries  ("TIPS"),  France's list of medical devices allowed
for   prescription  by  physicians   working  in  the  private  sector  and  for
reimbursement  by the  National  Health  Insurance.  That  application  is still
pending, and therefore we do not sell SAFHS devices in France at this time.

         In  Japan,  our  Japanese  distributor,   Teijin,  received  nationwide
reimbursement  approval  from the  Japanese  Health and Welfare  Ministry in May
1998.

         We cannot assure you that we will be  successful in obtaining  national
reimbursement  approval in Germany,  France,  or other  countries.  If we do not
obtain national reimbursement  approval of the SAFHS device in Germany,  France,
and other countries, our business,  financial condition,  results of operations,
and cash flows could be materially and adversely affected.
<PAGE>
Extensive Government Regulation

         United States. Our current product and our future products, if any, are
subject to extensive  regulation  by the FDA in the United States and by similar
regulatory  authorities  in other  countries.  Prior to  commercial  sale in the
United  States,  each of our  products  must  undergo  an  extensive  regulatory
approval process  conducted by the FDA under the Federal Food, Drug and Cosmetic
Act  ("FDC  Act").  The  FDA  regulates  the  clinical  testing,  manufacturing,
labeling,  distributing,  and promoting of medical devices.  Noncompliance  with
applicable  requirements  can  result  in  failure  of the  government  to grant
pre-market approval ("PMA") for devices, withdrawal of the PMA, total or partial
suspension of production, fines, injunctions, civil penalties, recall or seizure
of products, and criminal prosecution.

         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 SAFHS device is classified as a Class III device,  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 Good Manufacturing Practices ("GMP"),
the SAFHS device is 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 our products.  Accordingly,  we have had to
obtain,  and  expect  to apply  for,  PMAs and PMA  supplements  for our  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 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  Investigational
Device Exemption  ("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 recommended 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.

         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 and
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.
<PAGE>
         The PMA process can be expensive,  lengthy,  and  uncertain.  We cannot
assure you that we 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 our
business, financial condition, results of operations, and cash flows.

         We are required to file a PMA  supplement  for new or expanded  uses of
our SAFHS technology and for any material  modifications to the SAFHS device. If
a PMA  supplement  is not  accepted  by the  FDA  for a new or  expanded  use or
material  modification  of the SAFHS  device,  we must commence and complete the
entire  pre-market  approval process with respect to such use or modification of
the SAFHS  device.  We began  commercial  distribution  of the SAFHS  2000,  the
second-generation SAFHS device, in the United States in May 1997 pursuant to FDA
approval of a PMA supplement in March 1997. In August 1998, we resubmitted a PMA
supplement for expanded and new applications of the SAFHS 2000 device. We cannot
guarantee that this  supplement will be accepted on a timely basis or at all. In
addition,   we  will  be   required   to   file  a  PMA   application   for  our
mechanical-stress device, if and when development is completed. We cannot assure
you that any PMA application  relating to the  mechanical-stress  device will be
filed or granted on a timely basis, or at all.

         Any products  manufactured or distributed by us pursuant to an approved
PMA are subject to pervasive and  continuous  regulation  by the FDA,  including
record-keeping  requirements,  reports of adverse experience with the use of the
device,  postmarket  surveillance,  postmarket  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 Federal Trade
Commission.  Exogen and its agents may promote  products  only for the products'
approved  indications.  We  cannot  assure  you that  the FDA  will  not  impose
modifications to the labeling that could adversely affect our ability to market,
sell, or be reimbursed for the SAFHS device.  In addition,  we cannot assure you
that we will not  become  subject  to FDA  actions  as a result  of  physicians'
prescribing the SAFHS device for off-label uses.

         We are also 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.  We  cannot  assure  you that we 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 our business,  financial condition,  results of operations,  or cash
flows.

         International.  To  market  and sell the  SAFHS  device  or any  future
products in foreign markets, we must comply with foreign government regulations,
the  requirements  of which differ  substantially  from  country to country.  In
Europe,  we are  required  to comply with the Medical  Device  Directive,  which
covers most medical devices.  Under the Medical Device  Directive,  most medical
devices must qualify for the CE mark,  and effective  June 1998,  must bear a CE
mark to be marketed  and sold in the  European  Union.  To obtain the CE mark, a
manufacturer  must  demonstrate  compliance with product safety  requirements as
well as quality system requirements. The CE mark is recognized by countries that
are members of the European  Union and the European Free Trade  Association.  We
received  the CE mark for the SAFHS  Model 2A in  August  1996 and for the SAFHS
2000 in March 1998. We cannot assure you that we will be able to obtain CE marks
for future generations, if any, of the SAFHS device.
<PAGE>
         Although  members  of the  European  Union must  accept  for  marketing
medical devices bearing a CE mark without imposing further  requirements related
to product safety and  performance,  each country may require the use of its own
language on labels and instructions for use. National Competent Authorities, who
are required to enforce  compliance with the  requirements of the Medical Device
Directive,  can restrict,  prohibit,  and recall CE-marked  products if they are
considered  to be unsafe.  Such a decision  must be  confirmed  by the  European
Commission to be valid.  Member countries may impose additional  requirements as
long as they do not violate the Medical Device Directive or constitute technical
barriers to trade.

         We cannot assure you that the FDA or any foreign  regulatory  authority
will approve our current or future products in a timely manner, or at all. If we
experience  delays or failure in obtaining such  approvals,  lose any previously
received  approvals,  or fail to  comply  with  existing  or  future  regulatory
requirements, our business, financial condition, results of operations, and cash
flows will be materially and adversely affected.

Uncertainty of New Product Development

         We plan to seek FDA  approval  to begin  clinical  trials to expand the
approved uses for the SAFHS  technology to include  other  long-bone  fractures,
lower-spine  fusion, and cartilage repair. We also plan to undertake  additional
development  activities  and human  clinical  trials  for our  mechanical-stress
device,  which is designed to prevent  bone loss  related to  osteoporosis.  Our
research and  development  efforts  with  respect to expanded  uses of the SAFHS
technology  and the  mechanical-stress  device  may not lead to  development  of
applications  or products  that are shown to be safe and  effective  in clinical
trials. In addition, these new applications or products may not:

         o    meet applicable regulatory standards;

         o    be capable  of being  manufactured  in  commercial  quantities  at
              acceptable costs;

         o    be eligible for  third-party  reimbursement  from  governmental or
              private insurers;

         o    be successfully marketed; or

         o    achieve market acceptance.

         At any stage of the development  process,  new applications or products
that appeared  promising in  preclinical  studies or trials may not  demonstrate
efficacy  in  larger-scale  clinical  trials and as a result,  would not receive
regulatory  approval.  As a result,  it is possible that we may have to curtail,
redirect, suspend, or eliminate some or all of our product development programs.

Risks Associated with Intense Competition

         The medical device industry is intensely competitive.  The SAFHS device
competes with non-invasive bone-growth  electrical-stimulation  devices and with
various surgical treatments.  In the United States there are four companies that
currently   market   electrical   stimulation   devices  for  the  treatment  of
slow-healing  fractures, in direct competition with the SAFHS device. We believe
that some of these  companies are conducting  preclinical  or clinical  research
relating  to the use of  electrical  stimulation  for  the  treatment  of  fresh
fractures.  If our mechanical-stress  device is developed,  approved by the FDA,
<PAGE>
and  commercialized,  it will  compete  with  drug  therapies,  growth  factors,
bone-graft  substitutes,  and exercise/physical  therapy equipment.  Many of our
competitors have substantially greater financial,  technical,  marketing, sales,
and  distribution  resources  than we do.  They  also have  more  experience  in
research and development,  clinical trials,  and regulatory  matters than us. In
addition, most of our competitors have established third-party reimbursement for
their  products.  We cannot  assure you that our  competitors  will not  develop
products that are superior to ours, achieve greater market acceptance, or render
our  technology  and  products  obsolete  or  noncompetitive,  in which case our
business,  financial  condition,  results of operations,  and cash flows will be
materially and adversely affected.

Risks Associated with Rapid Technological Change

         The  medical  device  industry  is   characterized   by  rapid  product
development and technological change. We expect that the technologies associated
with medical devices will continue to develop rapidly.  As a result,  our future
success  will depend in large part upon our  ability to  maintain a  competitive
position  with  respect to those  technologies.  Technological  developments  by
others may result in our products' obsolescence or becoming too expensive before
they are  marketed  or  before we  recover a  significant  portion  of  expenses
incurred in connection with developing and  commercializing  those products,  in
which case our business,  financial condition,  results of operations,  and cash
flows will be materially and adversely affected.

Limited  Protection of Patents,  Copyrights,  and  Proprietary  Rights;  Risk of
Patent Infringement

         Our success  will depend in part on our ability to obtain and  maintain
United States and foreign patent  protection,  preserve our copyrights and trade
secrets, and operate without infringing the proprietary rights of third parties.
We place considerable  importance on obtaining patent protection for significant
new technologies, products, and processes. With respect to our SAFHS technology,
we hold title to 12 issued United States patents,  one issued  Canadian  patent,
one issued  Taiwanese  patent,  one issued New Zealand  patent,  one  registered
Japanese  design  patent,  19 pending  United  States patent  applications,  and
corresponding  Patent  Cooperation Treaty and foreign patent  applications.  The
original United States  ultrasound  patent that is the basis of the SAFHS device
expires in 2007.  Our 11 other issued  United States  patents  relating to SAFHS
technology will expire between 2008 and 2014.

         With respect to our mechanical-stress  technology, we are the exclusive
licensee of four issued United States patents, three issued foreign patents, one
pending  United  States  patent  application,  and four pending  foreign  patent
applications. The four issued United States patents will expire between 2010 and
2011.  The  exclusive  license  agreement  relating  to  the   mechanical-stress
technology provides for royalty payments on sales of products using the patented
technology.  Under the license agreement,  our exclusive license may revert to a
nonexclusive license if we do not use good faith efforts to commercially exploit
the patented  technology.  The license  agreement  expires on the later of March
2022 or the expiration of the final patent licensed to us.

         We  believe  we own or  have  the  right  to use  all  the  proprietary
technology necessary to manufacture and market our 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
<PAGE>
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,
we cannot be certain that we were the first to invent certain technology covered
by  pending  patent  applications  or that  we were  the  first  to file  patent
applications for such inventions.  In addition,  the patent positions of medical
device  companies,  including ours, are generally  uncertain  partly because the
positions involve complex legal and factual questions.

         Legal standards  relating to the validity of patents  covering  medical
devices and biotechnological  inventions and the scope of claims made under such
patents  are still  developing.  Our patent  position  is highly  uncertain  and
involves  complex  legal and factual  questions.  We cannot be certain  that the
applicants  or inventors of subject  matter  covered by patent  applications  or
patents owned by or licensed to us were the first to invent or the first to file
patent applications for such inventions. In addition, we cannot guarantee that:

         o    patent  applications  to which we hold  rights  will result in the
              issuance of patents;

         o    any patents  issued or licensed to us will be free from  challenge
              and that if challenged, they would be held to be valid;

         o    any such patents will provide commercially  significant protection
              to our technology, products, and processes;

         o    others will not  independently  develop  substantially  equivalent
              proprietary information that is not covered by patents to which we
              own rights or obtain access to our know-how; or

         o    others will not be issued patents that may prevent the sale of one
              or more of our  products,  or require a license and the payment of
              significant  fees or royalties by us to third parties to enable us
              to conduct our business.

         We have not received any notices alleging, and we are not aware of, any
infringement by us of any other entity's patents. However, because of the volume
of patents issued and patents applications filed relating to medical devices, we
cannot assure you that current and potential competitors and other third parties
have not filed or will not file  patent  applications,  or have not  received or
will not receive  patents,  relating to materials or processes we use or propose
to use.  Accordingly,  we cannot  assure you our  products do not  infringe  any
patents or proprietary rights of third parties.

         If another  party claims the same or  overlapping  subject  matter with
subject matter we have claimed in a United States patent  application or patent,
we may decide or be required to participate in  interference  proceedings in the
United States Patent and  Trademark  Office to determine  priority of invention.
Loss of such an interference  proceeding  would deprive us of patent  protection
sought or previously obtained. Participating in such proceedings could result in
substantial costs, whether or not the eventual outcome is favorable.
<PAGE>
         In addition to patent  protection,  we rely on trademarks,  copyrights,
trade  secrets,  proprietary  know-how,  and  confidentiality  and assignment of
invention  agreements  with  our  employees,  consultants,  distributors,  sales
agents,  and marketing  partners to protect our intellectual  property.  We hold
United  States  federal  trademark   registrations  for  the  marks:   SAFHS(R),
EXOGEN(R), SAFHS 2000(R), and EXOGEN 2000(R). We also hold registrations for the
SAFHS(R)  mark in Japan,  Canada,  and Mexico.  Trademark  applications  for the
EXOGEN and SAFHS 2000 marks are pending in foreign countries.  We hold rights to
copyrights on text and software we develop in connection with the SAFHS device.

         We cannot assure you that any issued  patents or copyrights we own will
provide  us  with  a  competitive   advantage  or  will  not  be  challenged  or
circumvented   by  our   competitors.   We  also  cannot  assure  you  that  our
confidentiality  and assignment of invention  agreements will not be breached or
that we would have  adequate  remedies for any such breach.  Finally,  we cannot
assure  you  that our  copyrights,  trade  secrets,  proprietary  know-how,  and
intellectual  property will not become known or be  independently  discovered by
others.

         Litigation may be necessary to defend  against claims of  infringement,
to enforce patents and copyrights  issued or licensed to us, or to protect trade
secrets.  If we must litigate such issues, we may be forced to incur substantial
costs and to devote substantial resources and time. We cannot assure you that we
would  prevail  in such  litigation.  In  addition,  if any  relevant  claims of
third-party  patents are upheld as valid and enforceable,  we could be prevented
from  selling our  products or could be  required  to obtain  licenses  from the
owners  of such  patents.  We  cannot  guarantee  that  such  licenses  would be
available or, even if available,  would be on acceptable  terms to us. If we are
forced to incur substantial costs in litigation or fail to obtain a license, our
business,  financial  condition,  results of operations,  and cash flows will be
materially and adversely affected.

Manufacturing and Related Risks

         We have developed  in-house  manufacturing and refurbishing  capability
for the SAFHS 2000 device.  Although we are able to manufacture our entire SAFHS
2000  production   in-house,   previous  purchase   commitments  to  a  contract
manufacturer  and our  belief  that it is  prudent  to have a second  source  to
support our in-house  manufacturing require our use of a contract  manufacturer.
We  anticipate  that  approximately  one third of our  fiscal  1999  SAFHS  2000
production will be supplied by the contract manufacturer.

         The FDA regulates  manufacturers  of medical devices that have received
FDA  approval.  We are required to adhere to FDA  regulations  setting forth GMP
requirements  relating to tests,  control, and documentation.  State and federal
agencies  monitor ongoing  compliance with GMP and other  applicable  regulatory
requirements  through periodic  inspections.  The FDA has inspected and approved
our  facilities and those of our contract  manufacturer  under the FDA's Quality
System  Regulations.  If we or the  contract  manufacturer  fail to maintain our
facilities in accordance with the FDA's GMP requirements, the noncomplying party
could lose the ability to  manufacture  the SAFHS device on a commercial  scale.
Loss of this  manufacturing  capability  could  limit our ability to deliver the
SAFHS device to physicians or patients. If this occurs, our business,  financial
condition,  results  of  operations,  and  cash  flows  will be  materially  and
adversely affected.
<PAGE>
         The manufacture of the SAFHS device involves an assembly process with a
number of  significant  components.  Each device is tested and released by us in
accordance with FDA requirements.  Most purchased  components are available from
more than one vendor.  However, one key component currently is manufactured by a
single-source  vendor. For this component,  there are relatively few alternative
sources of supply.  However,  we are  actively in the process of  qualifying  an
alternative  vendor  for this  component.  If the  supply of this  component  is
interrupted,  and we are unable to establish additional or replacement suppliers
for such component,  our business,  financial condition,  results of operations,
and cash flows will be materially and adversely affected.

Royalty Payment Obligations; Potential Loss of Exclusive License

         If we successfully  develop the  mechanical-stress  device,  we will be
required to pay a royalty on any net  revenues  from sales of this  product.  We
have an exclusive  license to the  mechanical-stress  technology,  which we will
lose if we do not commercially exploit the technology underlying the license. We
cannot assure you that we will be able to commercially  exploit this technology.
If we lose the exclusive license, our business,  financial condition, results of
operations, and cash flows could be materially and adversely affected.

Reliance on Key Personnel

         Our success depends to a significant extent upon our executive officers
and other key  technical  personnel.  If we lose the  services  of an  executive
officer or one or more key  employees  or our ability to attract and retain such
personnel, our business,  financial condition,  results of operations,  and cash
flows will be materially and adversely  affected.  Except for Patrick  McBrayer,
none of our  executive  officers or key  employees  is a party to an  employment
agreement  with  Exogen.  We do not have "key person"  life  insurance  policies
covering any of our employees.

Possible Volatility of Stock Price

         The  trading  price  of our  common  stock  has  been  subject  to wide
fluctuations  in the past.  Our common  stock's  trading price could continue to
fluctuate   in  response  to   variations   in  quarterly   operating   results,
announcements  of  technological  innovations  or  new  products  by us  or  our
competitors, changes in earning estimates by analysts, general conditions in the
medical device  industry,  and other events or factors.  In addition,  the stock
market in general has experienced significant price and volume fluctuations that
have  affected  the market  prices of equity  securities  of many  companies  in
industries  similar to ours.  This  volatility  has often been  unrelated to the
operating  performance  of  these  companies.   These  market  fluctuations  may
adversely  affect the market price of our common stock.  In the past,  companies
that have  experienced  volatility  in the market price of their stock have been
the object of  securities  class  action  litigation.  If we were the subject of
securities class action  litigation,  it could result in substantial costs and a
diversion of management's attention and resources.

Risks Associated With Low-Priced Stocks

         Continued  inclusion of our common stock on the Nasdaq  National Market
will require the following:

         o    that the public float consist of at least 750,000 shares of common
              stock, valued in the aggregate at more than $5 million;
<PAGE>
         o    that we maintain at least $4 million in net tangible assets;

         o    that our common  stock be held by at least 400  holders;  and

         o    that the minimum bid price for our common  stock be at least $1.00
              per share.

         If we are unable to satisfy such maintenance  requirements,  our common
stock may be removed to the Nasdaq  SmallCap  Market or delisted from the Nasdaq
Stock  Market.  In the event our common stock is delisted  from the Nasdaq Stock
Market,  trading, if any, in the securities would thereafter be conducted in the
over-the-counter  market  in the pink  sheets  or the  National  Association  of
Securities Dealers' Electronic  Bulletin Board.  Consequently,  the liquidity of
our  common  stock  could be  materially  impaired,  not only in the  number  of
securities that can be bought and sold at a given price, but also through delays
in the timing of  transactions  and  reduction  in  security  analysts'  and the
media's  coverage of us. This could  result in lower prices for our common stock
than might  otherwise  be  attained,  and could also  result in a larger  spread
between the bid and asked prices for our common stock.

         In addition, if our common stock is delisted from trading on the Nasdaq
Stock  Market and the trading  price of our common  stock is less than $5.00 per
share,  trading in the common stock would also be subject to the requirements of
Rule 15g-9 promulgated  under the Exchange Act. Under such rule,  broker/dealers
who recommend low-priced  securities to persons other than established customers
and  accredited  investors  must satisfy  special sales  practice  requirements,
including a requirement  that they make an  individualized  written  suitability
determination  for the purchaser  and receive the  purchaser's  written  consent
prior to the transaction.  The Securities  Enforcement  Remedies and Penny Stock
Reform Act of 1990 also requires  additional  disclosure in connection  with any
trades involving a stock defined as a penny stock (generally any equity security
not traded on an exchange or quoted on the Nasdaq Stock Market that has a market
price of less than $5.00 per share,  subject to some exceptions),  including the
delivery,  prior  to any  penny  stock  transaction,  of a  disclosure  schedule
explaining the penny stock market and the associated  risks.  Such  requirements
could severely limit the market  liquidity of our common stock. We cannot assure
you that our common stock will not be delisted or treated as a penny stock.

Year 2000 Risks

         The Year 2000  compliance  issue  results from the inability of systems
that utilize  computer  programs to properly process dates that fall in the year
2000 and beyond.  This issue arises  because many such programs  were  developed
using two digits rather than four digits to identify the  applicable  year. As a
result, programs that use time-sensitive calculations may not function correctly
in the year 2000.  Those programs  developed using four-digit years are probably
Year  2000   compliant;   however,   all  other  programs  will  likely  require
modification  and/or  replacement to be compliant.  The Year 2000 issue not only
affects  computer  hardware and software,  but also can affect equipment used in
the  operations of Exogen,  and extends to the systems of outside  suppliers and
customers, upon which Exogen relies. Failure to address the Year 2000 issue on a
timely  basis,  or at all, for critical  programs used by Exogen could result in
system failures or  miscalculations,  which could have a material adverse effect
on Exogen's  business,  financial  condition,  results of  operations,  and cash
flows.
<PAGE>
         We have formed a Year 2000 task force that  reviewed our  operations in
detail for Year 2000 compliance in the following areas:

         o    the SAFHS devices;

         o    our information systems hardware and software;

         o    our custom-developed business applications;

         o    third-party business software;  and

         o    other equipment using computer programs.

We do not believe that any of these areas will have a material adverse effect on
our business,  financial  condition,  results of operations,  and cash flows. We
cannot  assure  you that we will not find  Year 2000  issues  in these  areas as
further  compliance  testing  occurs,  or that such  issues,  if  found,  can be
corrected on a timely basis.

         We also reviewed our suppliers,  customers,  and marketing partners for
Year 2000  compliance.  We rely on, and will  continue  to rely on,  these third
parties to provide the following:

         o    equipment, goods, and services;

         o    reimbursement for the SAFHS devices; and

         o    marketing and distributing support for the SAFHS device.

There can be no assurance that these third parties will adequately  address Year
2000 compliance  issues or that contingency  plans in certain areas are possible
or  practical.  As a result,  there  could be a material  adverse  effect on our
business, financial condition, results of operations, and cash flows.

Possible Adverse Effect of the Euro Conversion

         On January 1, 1999, 11 of the 15 member countries of the European Union
established  fixed conversion rates between their existing  currencies and a new
common  currency called the "euro." This represents an initial step in a process
expected to culminate in the  replacement  of the existing  currencies  with the
euro. The conversion to the euro may have operational and legal implications for
some of our international  business  activities.  We have begun consideration of
the  effects of the euro  conversion  on our  operations,  but we are  currently
unsure  of the  potential  impact  that the  euro  conversion  will  have on our
business,   financial  condition,   results  of  operations,   and  cash  flows,
particularly as the euro conversion relates to our European operations.

Certain Anti-takeover Provisions

         Certain  provisions of our Certificate of  Incorporation  could make it
more  difficult for a third party to acquire  control of our  business,  even if
such change in control would be beneficial to our stockholders.  Our Certificate
of Incorporation  allows our Board of Directors to issue preferred stock without
stockholder  approval.  In  addition,  we  entered  into a Rights  Agreement  in
December  1996 that allows our Board of  Directors  to declare a dividend of one
right to purchase, under certain circumstances,  one one-hundredth of a share of
preferred stock for each share of common stock  outstanding.  Although we do not
have any current plans to issue any preferred  stock,  the issuance of preferred
stock in the future  could make it more  difficult  for a third party to acquire
our business.
<PAGE>
         In addition,  certain  provisions  of Delaware law and our bylaws could
discourage a third party from  attempting  to acquire  control of our  business.
Section 203 of the Delaware  General  Corporation Law prohibits us from engaging
in  any  business  combination  with  an  interested  stockholder  (generally  a
stockholder  who,  together  with  its  affiliates,  owns  15%  or  more  of our
outstanding  stock) for a period of three years unless  certain  conditions  are
met.  Section 203 may also have the effect of  discouraging  a proxy  contest or
tender  offer.  The current  tender offer by Smith & Nephew  Acquisition,  Inc.,
however, meets the conditions of Section 203. In addition, certain provisions of
our  bylaws  contain  specific  procedures  stockholders  must  follow in making
director  nominations and submitting  proposals for consideration at stockholder
meetings.  These  provisions  could make it more  difficult for a third party to
acquire our business.

Product Liability and Insurance

         Our business  exposes us to potential  product  liability  risks in the
event that the use of our products is alleged to have  resulted in physical harm
or other adverse  effect.  Product  liability  insurance for the medical  device
industry is  expensive.  We currently  carry  product  liability  coverage of $3
million per  occurrence,  with  coverage in the  aggregate of $3 million for all
claims made in any policy year.  In  addition,  we maintain  umbrella  liability
insurance,  including product liability coverage, of $10 million per occurrence,
with  coverage in the aggregate of $10 million for all claims made in any policy
year.  Although to date we have not been the  subject of any  product  liability
claims,  we cannot assure you that our insurance will provide adequate  coverage
against  potential claims or that we will be able to maintain product  liability
insurance on acceptable  terms, or at all. If a product  liability claim exceeds
the coverage of our insurance policy, our business, financial condition, results
of operations, and cash flows will be materially and adversely affected.

Shares Eligible for Future Sale

         If our  stockholders  sell  substantial  amounts of our  common  stock,
including  shares issued upon the exercise of outstanding  options and warrants,
in the public  market,  the market  price of our common  stock could fall.  Such
sales also  might  make it  difficult  for us to sell  equity or  equity-related
securities  in the  future at a time and price that we deem  appropriate.  As of
July 30,  1999,  there were  12,768,241  shares of common stock  outstanding  as
follows:

         o    approximately 2.4 million shares, which are held by affiliates and
              are subject to the volume restrictions of Rule 144, and

         o    the remaining outstanding shares of common stock, which are freely
              tradeable.

The possible  sale of a  significant  number of the above shares of common stock
may cause the price of our common stock to fall.
<PAGE>
         We have registered for resale 1,350,000 shares of common stock reserved
for issuance under our 1995 Stock Option/Stock  Issuance Plan, as amended. As of
July 30,  1999,  options  to  purchase  1,088,064  shares of common  stock  were
outstanding  and will be  eligible  for sale in the public  market  from time to
time,  subject to  vesting.  In  addition,  144,246  shares of common  stock are
available under Exogen's  employee stock purchase plan, as amended.  Also, there
are 125,000 shares of common stock issuable upon exercise of warrants, which may
be sold in accordance  with Rule 144 one year after their date of issuance.  The
possible  sale of a significant  number of the shares  issuable upon exercise of
stock options and warrants, or under the employee stock purchase plan, may cause
the price of our common stock to fall.

Smith & Nephew has Certain Rights to Purchase Shares of Common Stock

         Under the August 1998 agreements between Smith & Nephew and us, Smith &
Nephew has an option to acquire exclusive worldwide  distribution rights, except
in Japan, to the SAFHS device. This worldwide  distribution option is limited to
a three-year  period. If Smith & Nephew exercises this option, it has a one-time
right to purchase  from us  additional  shares of our common  stock,  up to 19%,
including  the shares  already  acquired by Smith & Nephew,  of the  outstanding
shares of our common  stock,  after giving  effect to the shares  issuable  upon
exercise  of the right.  The price per share to be paid would  equal the stock's
average fair market value over a 20-day period preceding the date Smith & Nephew
announces, to Exogen, its election to exercise the stock purchase option. Any of
these  additional  shares of our common stock sold to Smith & Nephew under these
agreements  would  require  that  we  file a  registration  statement  with  the
Securities and Exchange  Commission to register the shares. The possible sale of
a significant  number of these shares may cause the price of our common stock to
fall.

No Intention to Pay Dividends

         We have never declared or paid any cash dividends on our capital stock.
We  currently  intend to retain any future  earnings  for  funding  growth,  and
therefore do not expect to pay any dividends in the foreseeable future.
<PAGE>
                                  EXOGEN, INC.

                    QUANTITATIVE AND QUALITATIVE DISCLOSURES
                                ABOUT MARKET RISK
                                -----------------

         The  following  discussion  about  Exogen's  risk  management  includes
forward-looking statements that involve risks and uncertainties.  Actual results
could  differ  materially  from the  results  discussed  in the  forward-looking
statements.

Currency Rate Fluctuations

         Since  6%  of  Exogen's   fiscal  1998  net   product   revenues,   and
approximately 10% of those for the nine months ended June 30, 1999, were derived
from a European subsidiary operating in a local currency environment,  and 4% of
Exogen's  total assets as of June 30, 1999,  were European,  Exogen's  financial
position,  results of operations,  and cash flows are affected by changes in the
relative  values  of  non-U.S.  currencies  to the U.S.  dollar.  The  principal
non-U.S.  currency used for valuation by Exogen's subsidiary is the German mark.
Exogen does not limit its risk in this area by using any financial  tools,  such
as currency hedge contracts.  Therefore,  volatility in currency  exchange rates
could have a material adverse effect on those revenues and assets denominated in
non-U.S. currencies.

Market Risk

         Exogen's  accounts  receivables  are subject,  in the normal  course of
business,  to collection risks.  Exogen regularly  assesses these risks, and has
established  policies  and  business  practices  to protect  against the adverse
effects  of  collection  risks.  As a result,  Exogen  does not  anticipate  any
material losses in this area.

Interest Rate Risk

         Exogen's  investments  are held to maturity and are stated at amortized
cost. Therefore,  changes in the market's interest rates do not affect the value
of the investments as recorded by Exogen.


<PAGE>
                                     PART II

                                OTHER INFORMATION

ITEM 1.  Legal Proceedings

              None.

ITEM 2.  Changes in Securities and Use of Proceeds

              None.

ITEM 3.  Defaults Upon Senior Securities

              None.

ITEM 4.  Submission of Matters to a Vote of Security Holders

              None.

ITEM 5.  Other Information

              On July 25, 1999,  Exogen  entered  into an Agreement  and Plan of
              Merger with Smith & Nephew,  Inc. and its wholly owned subsidiary,
              Smith & Nephew Acquisition, Inc., pursuant to which Smith & Nephew
              Acquisition,  Inc.  would  acquire all the  outstanding  shares of
              common  stock of  Exogen  for a cash  price of  $5.15  per  share,
              subject to certain conditions  contained therein.  Under the terms
              of the  transaction,  Smith & Nephew  Acquisition,  Inc. began the
              tender offer for all of Exogen's  outstanding common stock on July
              30, 1999. The  acquisition is expected to close in September 1999.
              Exogen filed with the Securities and Exchange  Commission a Report
              on Form 8-K that sets forth the terms of the transaction.

ITEM 6.  Exhibits and Reports on Form 8-K

              (a) Exhibits:

                   3.1     Second   Amended   and   Restated    Certificate   of
                           Incorporation of Exogen. Incorporated by reference to
                           Exhibit  3.1 to  Exogen's  Form  10-Q  for the  third
                           quarter ended June 30, 1995.
                   3.2     Amended and Restated  Bylaws of Exogen.  Incorporated
                           by  reference  to Exhibit  3.3 to  Exogen'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 Exogen
                           defining rights of holders of common stock of Exogen.
                  10.1     Amended  and  Restated  Investors'  Rights  Agreement
                           dated as of November  14,  1994,  among  Exogen,  the
                           investors  listed  on  Schedule  A  thereto,  and the
                           individuals    listed   on    Schedule   B   thereto.
                           Incorporated by reference to Exhibit 10.1 to Exogen'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 Exogen's
                           Form S-1  Registration  Statement  (Registration  No.
                           33-92740).
                  10.3     [RESERVED]
                  10.4     [RESERVED]
                  10.5     Form of Consulting Agreements between Exogen and each
                           of Drs. McLeod and Rubin, as amended. Incorporated by
                           reference  to  Exhibit  10.5  to  Exogen's  Form  S-1
                           Registration Statement (Registration No. 33-92740).
                  10.6     Form of Stock  Restriction  Agreement  between Exogen
                           and  each  of  Drs.  McLeod  and  Rubin  and  Messrs.
                           Reisner,   Ryaby,   Talish,   McBrayer,   and  Bohan.
                           Incorporated by reference to Exhibit 10.6 to Exogen's
                           Form S-1  Registration  Statement  (Registration  No.
                           33-92740).
                  10.7     Form of Stock Purchase  Agreement  between Exogen and
                           each  of  Messrs.   Reisner,   Ryaby,   and   Talish.
                           Incorporated by reference to Exhibit 10.7 to Exogen's
                           Form S-1  Registration  Statement  (Registration  No.
                           33-92740).
                  10.8     Manufacturing   Agreement  dated  January  20,  1994,
                           between   Exogen   and   Hi-Tronics   Designs,   Inc.
                           Incorporated by reference to Exhibit 10.8 to Exogen'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 Exogen's
                           Form S-1  Registration  Statement  (Registration  No.
                           33-92740).
                  10.10    [RESERVED]
                  10.11    [RESERVED]
                  10.12    Lease  Agreement  dated  December  13,  1994,  by and
                           between  Exogen and  Siemens  Medical  Systems,  Inc.
                           Incorporated   by  reference  to  Exhibit   10.13  to
                           Exogen'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 Exogen's  Form S-1  Registration
                           Statement (Registration No. 33-92740).
                  10.14    SAFHS  Agreement  dated  November 30,  1995,  between
                           Exogen and Teijin Limited.  Incorporated by reference
                           to Exhibit  10.14 to Exogen's  Form 10-K for the year
                           ended September 30, 1995.
                  10.15+   Mechanical-Stress  Agreement dated November 30, 1995,
                           between Exogen and Teijin  Limited.  Incorporated  by
                           reference to Exhibit  10.15 to Exogen's Form 10-K for
                           the year ended September 30, 1995.
                  10.16    Employment  Agreement  dated  March 1, 1997,  between
                           Exogen  and  Patrick  A.  McBrayer.  Incorporated  by
                           reference to Exhibit  10.16 to Exogen's Form 10-Q for
                           the second quarter ended March 31, 1997.
<PAGE>
                  10.17    Severance  Agreement,  dated  May 27,  1997,  between
                           Exogen and John Bohan.  Incorporated  by reference to
                           Exhibit  10.17  to  Exogen's  Form  10-K for the year
                           ended September 30, 1997.
                  10.18    Common Stock  Purchase  Agreement,  dated October 20,
                           1997,  between Exogen and certain investors listed on
                           Schedule  1 thereto.  Incorporated  by  reference  to
                           Exhibit  10.18  to  Exogen's  Form  10-K for the year
                           ended September 30, 1997.
                  10.19    Registration  Rights  Agreement,  dated  October  20,
                           1997,  between Exogen and certain investors listed on
                           Schedule  1 thereto.  Incorporated  by  reference  to
                           Exhibit  10.19  to  Exogen's  Form  10-K for the year
                           ended September 30, 1997.
                  10.20    The 1995  Stock  Option  / Stock  Issuance  Plan,  as
                           amended  on  November  14,  1997.   Incorporated   by
                           reference  to  Exhibit  99.1  to  Exogen's  Form  S-8
                           Registration Statement (Registration No. 333-51731).
                  10.21    The  Employee  Stock  Purchase  Plan,  as  amended on
                           November  14,  1997.  Incorporated  by  reference  to
                           Exhibit  99.9  to  Exogen's  Form  S-8   Registration
                           Statement (Registration No. 333-51731).
                  10.22*   Master  Agreement,  dated  August 10,  1998,  between
                           Exogen  and  Smith &  Nephew,  Inc.  Incorporated  by
                           reference to Exhibit  10.22 to Exogen's Form 10-K for
                           the year ended September 30, 1998.
                  10.23    Common  Stock  Purchase  Agreement,  dated August 10,
                           1998,  between  Exogen  and Smith & Nephew  Holdings,
                           Inc.  Incorporated  by reference to Exhibit  10.23 to
                           Exogen's  Form 10-K for the year ended  September 30,
                           1998.
                  10.24*   United States Sales Representative  Agreement,  dated
                           August 10, 1998,  between  Exogen and Smith & Nephew,
                           Inc.  Incorporated  by reference to Exhibit  10.24 to
                           Exogen's Current Report on Form 8-K, dated August 10,
                           1998.
                  10.25*   License  Agreement,  dated August 10,  1998,  between
                           Exogen  and  Smith &  Nephew,  Inc.  Incorporated  by
                           reference to Exhibit 10.25 to Exogen's Current Report
                           on Form 8-K, dated August 10, 1998.
                  10.26    Promissory  Note,  dated  October 6, 1998,  issued by
                           Exogen  to  Jonathan  J.  Kaufman.   Incorporated  by
                           reference to Exhibit 10.1 to Exogen's  Current Report
                           on Form 8-K, dated September 30, 1998.
                  10.27    Promissory  Note,  dated  October 6, 1998,  issued by
                           Exogen  to  Alessandro  Chiabrera.   Incorporated  by
                           reference to Exhibit 10.2 to Exogen's  Current Report
                           on Form 8-K, dated September 30, 1998.
                  10.28    Warrant to Purchase  Common  Stock,  dated October 9,
                           1998,  issued  by  Exogen  to  Alessandro  Chiabrera.
                           Incorporated by reference to Exhibit 10.3 to Exogen's
                           Current Report on Form 8-K, dated September 30, 1998.
                  10.29    Registration Rights Agreement, dated October 9, 1998,
                           by  and  between  Exogen  and  Alessandro  Chiabrera.
                           Incorporated by reference to Exhibit 10.4 to Exogen's
                           Current Report on Form 8-K, dated September 30, 1998.
<PAGE>
                  10.30    Promissory Note, dated September 30, 1998,  issued by
                           Exogen  to Pilla  Consulting,  Inc.  Incorporated  by
                           reference to Exhibit 10.5 to Exogen's  Current Report
                           on Form 8-K, dated September 30, 1998.
                  10.31    Warrant to Purchase Common Stock, dated September 30,
                           1998,   issued  by   Exogen   to  Arthur  A.   Pilla.
                           Incorporated by reference to Exhibit 10.6 to Exogen's
                           Current Report on Form 8-K, dated September 30, 1998.
                  10.32    Registration  Rights  Agreement,  dated September 30,
                           1998,  by and  between  Exogen and  Arthur A.  Pilla.
                           Incorporated by reference to Exhibit 10.7 to Exogen's
                           Current Report on Form 8-K, dated September 30, 1998.
                  10.33    Amendment to Employment  Agreement,  dated October 1,
                           1998,   between   Exogen  and  Patrick  A.  McBrayer.
                           Incorporated   by  reference  to  Exhibit   10.33  to
                           Exogen's  Form 10-K for the year ended  September 30,
                           1998.
                  10.34    Agreement  and  Plan of  Merger  dated as of July 25,
                           1999, among Exogen, Smith & Nephew, Inc., and Smith &
                           Nephew Acquisition, Inc. Incorporated by reference to
                           Exhibit 1 to Exogen's  Schedule  14D-9 dated July 30,
                           1999.
                  21.1     List of  Subsidiary.  Incorporated  by  reference  to
                           Exhibit 21.1 to Exogen's Form 10-K for the year ended
                           September 30, 1995.
                  27**     Financial Data Schedule.
                  99.1     Preferred Shares Rights Agreement,  dated December 6,
                           1996,  between  Exogen  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.  Incorporated  by  reference to Exhibit
                           99.1  to  Exogen's  Form  10-K  for  the  year  ended
                           September 30, 1996.

- --------------------------------------------------------------------------------
                  +   Confidential treatment has been granted.

                  *   Exogen has applied for confidential  treatment of portions
                      of  this   exhibit   pursuant  to  Rule  24b-2  under  the
                      Securities Exchange Act of 1934, as amended.

                  **  This exhibit is filed herewith.

              (b) Reports on Form 8-K:

                  On July 28, 1999,  Exogen filed a Report on Form 8-K to report
                  under  Item 5 the  announcement  of an  Agreement  and Plan of
                  Merger among Exogen,  Smith & Nephew, Inc., and Smith & Nephew
                  Acquisition, Inc., dated as of July 25, 1999.
<PAGE>



                                   SIGNATURES

Pursuant  to the  requirements  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.
                                  ----------------------
                                         (Registrant)

August 10, 1999             By:   /s/Patrick A. McBrayer
                                  ----------------------
                                  Patrick A. McBrayer, President and
                                  Chief Executive Officer

August 10, 1999             By:   /s/Richard H. Reisner
                                  ---------------------
                                  Richard H. Reisner, Vice President and
                                  Chief Financial Officer (Principal Financial
                                  Officer and Principal Accounting Officer)

<PAGE>

                                  EXOGEN, INC.

                                  EXHIBIT INDEX

    Number                            Description
    ------                            -----------

     3.1       Second  Amended and  Restated  Certificate  of  Incorporation  of
               Exogen. Incorporated by reference to Exhibit 3.1 to Exogen's Form
               10-Q for the third quarter ended June 30, 1995.
     3.2       Amended and Restated Bylaws of Exogen.  Incorporated by reference
               to  Exhibit  3.3 to  Exogen'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 Exogen defining rights of holders of
               common stock of Exogen.
    10.1       Amended and  Restated  Investors'  Rights  Agreement  dated as of
               November 14, 1994, among Exogen, the investors listed on Schedule
               A  thereto,  and the  individuals  listed on  Schedule B thereto.
               Incorporated  by reference  to Exhibit 10.1 to Exogen'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 Exogen's Form S-1  Registration  Statement  (Registration
               No. 33-92740).
    10.3       [RESERVED]
    10.4       [RESERVED]
    10.5       Form of  Consulting  Agreements  between  Exogen and each of Drs.
               McLeod  and Rubin,  as  amended.  Incorporated  by  reference  to
               Exhibit  10.5  to  Exogen's  Form  S-1   Registration   Statement
               (Registration No. 33-92740).
    10.6       Form of Stock  Restriction  Agreement  between Exogen and each of
               Drs.  McLeod  and  Rubin  and  Messrs.  Reisner,  Ryaby,  Talish,
               McBrayer, and Bohan. Incorporated by reference to Exhibit 10.6 to
               Exogen's  Form  S-1  Registration  Statement   (Registration  No.
               33-92740).
    10.7       Form of  Stock  Purchase  Agreement  between  Exogen  and each of
               Messrs. Reisner, Ryaby, and Talish.  Incorporated by reference to
               Exhibit  10.7  to  Exogen's  Form  S-1   Registration   Statement
               (Registration No. 33-92740).
    10.8       Manufacturing  Agreement  dated January 20, 1994,  between Exogen
               and Hi-Tronics Designs, Inc. Incorporated by reference to Exhibit
               10.8 to Exogen'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  Exogen's  Form S-1  Registration
               Statement (Registration No. 33-92740).
    10.10      [RESERVED]
    10.11      [RESERVED]
    10.12      Lease  Agreement  dated  December 13, 1994, by and between Exogen
               and Siemens Medical  Systems,  Inc.  Incorporated by reference to
               Exhibit  10.13  to  Exogen'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
               Exogen's  Form  S-1  Registration  Statement   (Registration  No.
               33-92740).
    10.14      SAFHS  Agreement  dated  November  30, 1995,  between  Exogen and
               Teijin  Limited.  Incorporated  by reference to Exhibit  10.14 to
               Exogen's Form 10-K for the year ended September 30, 1995.
    10.15+     Mechanical-Stress  Agreement  dated  November 30,  1995,  between
               Exogen and Teijin  Limited.  Incorporated by reference to Exhibit
               10.15 to  Exogen's  Form 10-K for the year  ended  September  30,
               1995.
    10.16      Employment  Agreement  dated  March 1, 1997,  between  Exogen and
               Patrick A. McBrayer.  Incorporated  by reference to Exhibit 10.16
               to  Exogen's  Form 10-Q for the second  quarter  ended  March 31,
               1997.
    10.17      Severance Agreement,  dated May 27, 1997, between Exogen and John
               Bohan.  Incorporated  by reference  to Exhibit  10.17 to Exogen's
               Form 10-K for the year ended September 30, 1997.
    10.18      Common Stock Purchase Agreement,  dated October 20, 1997, between
               Exogen  and  certain  investors  listed on  Schedule  1  thereto.
               Incorporated  by reference to Exhibit 10.18 to Exogen's Form 10-K
               for the year ended September 30, 1997.
    10.19      Registration  Rights Agreement,  dated October 20, 1997,  between
               Exogen  and  certain  investors  listed on  Schedule  1  thereto.
               Incorporated  by reference to Exhibit 10.19 to Exogen's Form 10-K
               for the year ended September 30, 1997.
    10.20      The 1995  Stock  Option / Stock  Issuance  Plan,  as  amended  on
               November 14, 1997.  Incorporated  by reference to Exhibit 99.1 to
               Exogen's  Form  S-8  Registration  Statement   (Registration  No.
               333-51731).
    10.21      The  Employee  Stock  Purchase  Plan,  as amended on November 14,
               1997.  Incorporated by reference to Exhibit 99.9 to Exogen's Form
               S-8 Registration Statement (Registration No. 333-51731).
    10.22*     Master Agreement, dated August 10, 1998, between Exogen and Smith
               & Nephew,  Inc.  Incorporated  by reference  to Exhibit  10.22 to
               Exogen's Form 10-K for the year ended September 30, 1998.
    10.23      Common Stock Purchase  Agreement,  dated August 10, 1998, between
               Exogen  and  Smith  &  Nephew  Holdings,   Inc.  Incorporated  by
               reference  to Exhibit  10.23 to  Exogen's  Form 10-K for the year
               ended September 30, 1998.
    10.24*     United States Sales  Representative  Agreement,  dated August 10,
               1998,  between Exogen and Smith & Nephew,  Inc.  Incorporated  by
               reference  to Exhibit  10.24 to Exogen's  Current  Report on Form
               8-K, dated August 10, 1998.
    10.25*     License  Agreement,  dated  August 10, 1998,  between  Exogen and
               Smith & Nephew,  Inc.  Incorporated by reference to Exhibit 10.25
               to Exogen's Current Report on Form 8-K, dated August 10, 1998.
    10.26      Promissory  Note,  dated  October  6,  1998,  issued by Exogen to
               Jonathan J. Kaufman. Incorporated by reference to Exhibit 10.1 to
               Exogen's Current Report on Form 8-K, dated September 30, 1998.
    10.27      Promissory  Note,  dated  October  6,  1998,  issued by Exogen to
               Alessandro  Chiabrera.  Incorporated by reference to Exhibit 10.2
               to Exogen's Current Report on Form 8-K, dated September 30, 1998.
    10.28      Warrant to Purchase Common Stock,  dated October 9, 1998,  issued
               by Exogen to Alessandro  Chiabrera.  Incorporated by reference to
               Exhibit  10.3 to  Exogen's  Current  Report  on Form  8-K,  dated
               September 30, 1998.
<PAGE>
    10.29      Registration  Rights  Agreement,  dated  October 9, 1998,  by and
               between  Exogen  and  Alessandro   Chiabrera.   Incorporated   by
               reference to Exhibit 10.4 to Exogen's Current Report on Form 8-K,
               dated September 30, 1998.
    10.30      Promissory  Note,  dated September 30, 1998,  issued by Exogen to
               Pilla Consulting,  Inc. Incorporated by reference to Exhibit 10.5
               to Exogen's Current Report on Form 8-K, dated September 30, 1998.
    10.31      Warrant to Purchase  Common  Stock,  dated  September  30,  1998,
               issued by Exogen to Arthur A. Pilla. Incorporated by reference to
               Exhibit  10.6 to  Exogen's  Current  Report  on Form  8-K,  dated
               September 30, 1998.
    10.32      Registration  Rights Agreement,  dated September 30, 1998, by and
               between Exogen and Arthur A. Pilla.  Incorporated by reference to
               Exhibit  10.7 to  Exogen's  Current  Report  on Form  8-K,  dated
               September 30, 1998.
    10.33      Amendment to Employment Agreement, dated October 1, 1998, between
               Exogen and Patrick A.  McBrayer.  Incorporated  by  reference  to
               Exhibit 10.33 to Exogen's Form 10-K for the year ended  September
               30, 1998.
    10.34      Agreement  and Plan of Merger  dated as of July 25,  1999,  among
               Exogen,  Smith & Nephew,  Inc.,  and Smith & Nephew  Acquisition,
               Inc.  Incorporated by reference to Exhibit 1 to Exogen's Schedule
               14D-9 dated July 30, 1999.
    21.1       List of Subsidiary.  Incorporated by reference to Exhibit 21.1 to
               Exogen's Form 10-K for the year ended September 30, 1995.
    27**       Financial Data Schedule.
    99.1       Preferred  Shares  Rights  Agreement,  dated  December  6,  1996,
               between Exogen 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.  Incorporated  by  reference  to  Exhibit  99.1  to
               Exogen's Form 10-K for the year ended September 30, 1996.

- --------------------------------------------------------------------------------
               +  Confidential treatment has been granted.

               * Exogen has applied for  confidential  treatment  of portions of
               this exhibit pursuant to Rule 24b-2 under the Securities Exchange
               Act of 1934, as amended.

               ** This exhibit is filed herewith.

<TABLE> <S> <C>

<ARTICLE> 5

<S>                             <C>
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          SEP-30-1999
<PERIOD-END>                               JUN-30-1999
<CASH>                                           3,750
<SECURITIES>                                     5,940
<RECEIVABLES>                                    8,820
<ALLOWANCES>                                     4,993
<INVENTORY>                                      1,052
<CURRENT-ASSETS>                                15,004
<PP&E>                                           2,069
<DEPRECIATION>                                   1,447
<TOTAL-ASSETS>                                  16,186
<CURRENT-LIABILITIES>                            3,632
<BONDS>                                              0
                                0
                                          0
<COMMON>                                             1
<OTHER-SE>                                      12,222
<TOTAL-LIABILITY-AND-EQUITY>                    16,186
<SALES>                                         10,912
<TOTAL-REVENUES>                                10,912
<CGS>                                            3,655
<TOTAL-COSTS>                                    3,655
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                   318
<INTEREST-EXPENSE>                                   5
<INCOME-PRETAX>                                (4,138)
<INCOME-TAX>                                         2
<INCOME-CONTINUING>                            (4,140)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   (4,140)
<EPS-BASIC>                                     (.033)
<EPS-DILUTED>                                   (.033)


</TABLE>


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