VIVRA INC
8-K, 1996-03-15
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<PAGE>

                                    FORM 8-K

                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

                                 CURRENT REPORT

     Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

                         Date of Report:  March 15, 1996


                                 VIVRA INCORPORATED
               -----------------------------------------------------
               (Exact name of registrant as specified in its charter)


                  Delaware             1-10261           94-3096645
               -----------------------------------------------------
               (State or other       (Commission        (IRS Employer
               jurisdiction of       File Number)          Id. No.)
               incorporation)


               400 Primrose, Suite 200, Burlingame, California 94010
               -----------------------------------------------------
                       (Address of principal executive offices)


Registrant's telephone number, including area code:  (415) 348-8200

Item 7.  Financial Statements and Exhibits.
         --------------------------------- 

     (c)  Exhibits.

          10.1 Stock Exchange Agreement among Vivra Orthopedics, Inc.; Vivra
               Incorporated; and Joseph Zagorski, M.D.


                                       -1-


<PAGE>


                                    SIGNATURE


     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 hereunto duly authorized.

     Dated:  March 15, 1996

                               VIVRA INCORPORATED



                               By  /s/ LEANNE M. ZUMWALT                        
                                  ----------------------------------------------
                                         Leanne M. Zumwalt
                                     Executive Vice President


                                       -2-






<PAGE>

                              EXHIBIT 10.1


    =================================================================




                          STOCK EXCHANGE AGREEMENT



                          dated February __, 1996

                                by and among

                          VIVRA ORTHOPAEDICS INC.,

                                    and

                          JOSEPH ZAGORSKI, M.D.,
                                 as Seller

                                    and

                            Vivra Incorporated





    =================================================================

<PAGE>

                            STOCK EXCHANGE AGREEMENT

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


          THIS STOCK EXCHANGE AGREEMENT is made and entered into this ____ day
of February, 1996, by and among Vivra Orthopaedics Inc., a Delaware corporation
("VOR"), Joseph Zagorski, M.D. ("Seller") and Vivra Incorporated, a Delaware
corporation ("Vivra").

          WHEREAS, OrthoNet, Inc., a Florida corporation ("OrthoNet") is engaged
in the business of owning and operating an orthopaedic network in the State of
Florida (referred to herein as the "Florida Business");

          WHEREAS, Seller owns 1,000 shares of common stock, $0.01 par value, of
OrthoNet (the "OrthoNet Shares");

          WHEREAS, Vivra desires to purchase from Seller and Seller desires to
sell to Vivra all of the OrthoNet Shares; and

          WHEREAS, Seller and Vivra will derive significant benefits from the
consummation of the transactions contemplated by this Agreement and wish to
induce the other to enter into this Agreement by entering into certain covenants
and agreements.

          NOW, THEREFORE, in consideration of the representations, warranties,
covenants and agreements herein contained, the parties agree as follows:


                                    ARTICLE I

                                 THE TRANSACTION

          1.1.      Exchange of Stock.  Subject to the terms and conditions
                    -----------------                                      
contained herein, at the Closing (as hereinafter defined) Seller shall sell,
transfer and assign to Vivra, and Vivra shall purchase, accept and receive all
right, title and interest in and to all of the OrthoNet Shares, free and clear
of all options, pledges, security interests, liens, charges or other
encumbrances or restrictions of any kind ("Encumbrances"), solely in exchange
for common stock of Vivra.


<PAGE>


                                   ARTICLE II

                           CONSIDERATION FOR TRANSFER

          2.1.      Consideration.
                    ------------- 

          (a)  Upon the terms and subject to the conditions hereof, and in
consideration of the transfer and delivery of the OrthoNet Shares, at the
Closing Vivra shall deliver (i) to Seller that number of shares of common stock,
$.01 par value per share of Vivra ("Vivra Common Stock") equal to $7,250,000
divided by the Average Closing Price (as defined below), and (ii) to the Escrow
Agent (as defined below), that number of shares of Vivra Common Stock equal to
$250,000 divided by the Average Closing Price (the "Post Closing Payment").

          (b)  For purposes of this Agreement "Average Closing Price" shall mean
the average closing price of Vivra Common Stock on the New York Stock Exchange
for the ten (10) consecutive trading days ending on the fifth (5th) trading day
prior to the Closing Date.

          (c)  All references in this Agreement to Vivra Common Stock shall be
deemed to include the associated right to purchase a share of Vivra Series A
Junior Participating Preferred Stock pursuant to the Rights Agreement between
Vivra and Bank of America National Trust and Savings Association.  The shares of
Vivra Common Stock to be issued to the Seller (including the Post Closing
Payment) are referred to in this Agreement as the "Vivra Shares".  The Vivra
Shares to be delivered to Seller pursuant to Section 2.1(a)(i) shall initially
be delivered to the Seller Representative pursuant to Section 6.11 of this
                                                      ------------
Agreement.


                                   ARTICLE III

                                   THE CLOSING

          3.1.  Closing.  The Closing of the transfer of the OrthoNet Shares
                -------                                                     
contemplated by this Agreement (the "Closing") will occur on __________, 1996,
or on such other date as the parties may agree (the "Closing Date").  Upon
consummation, the Closing shall be deemed to take place as of the opening of
business on the Closing Date.

          3.2.  Deliveries by VOR.  At the Closing, VOR shall deliver the
                -----------------                                        
following:

          (a)  certificates evidencing the number of Vivra Shares to be
     delivered to the Seller Representative and the Escrow Agent; and


                                       -2-


<PAGE>

          (b)  an Officer's Certificate as to the accuracy at Closing of
     all of VOR's representations and warranties as if made at and as of
     Closing, the fulfillment of all of VOR's agreements and covenants and
     the satisfaction of all Closing conditions to be satisfied by VOR; and

          (c)  such other instruments or documents as may be necessary or
     appropriate to carry out the transactions contemplated hereby.

          3.3.  Deliveries by Seller.  At the Closing, Seller shall deliver the
                --------------------                                           
following:

          (a)  certificate(s) evidencing all of the OrthoNet Shares, duly
     endorsed for transfer to Vivra;

          (b)  payoff and release letters from all creditors of OrthoNet
     having a lien on any of the Assets (as defined below);

          (c)  a Good Standing Certificate for OrthoNet as of a recent date
     from the Secretary of State of Florida;

          (d)  a Certificate as to the accuracy at Closing of all of
     Seller's representations and warranties as if made at and as of
     Closing, the fulfillment of all of Seller's agreements and covenants
     and the satisfaction of all Closing conditions to be satisfied by
     Seller;

          (e)  the minute books, bylaws and stock records of OrthoNet
     certified by the secretary of OrthoNet;

          (f)  the written resignation of Seller as an officer and director
     of OrthoNet;

          (g)  a letter substantially in the form attached hereto as
     Exhibit B, executed by Seller; and

          (h)  such other endorsements, instruments or documents as may be
     necessary or appropriate to carry out the transactions contemplated
     hereby.

At the Closing, the Seller shall take all steps necessary to place Vivra in
actual possession and operating control of the Florida Business.

          3.4.  Closing Agreements.  At the Closing, the parties shall execute,
                ------------------                                             
acknowledge and deliver the following (collectively, the "Closing Agreements"):


                                       -3-


<PAGE>

          (a)  an Employment Agreement between VOR and Seller in
     substantially the form attached hereto as Exhibit A (the "Employment
                                               ---------
     Agreement");

          (b)  an Escrow Agreement among Vivra, Seller and Geiger, Kasdin,
     Heller, Kuperstein, Chames & Weil, P.A., as Escrow Agent, in
     substantially the form attached hereto as Exhibit C; and
                                               ---------

          (c)  such other instruments or documents as may be necessary or
     appropriate to carry out the transactions contemplated by this
     Agreement and to comply with the terms hereof.


                                   ARTICLE IV

                  REPRESENTATIONS AND WARRANTIES OF THE SELLER

          The Seller hereby represents and warrants to VOR and Vivra as of the
date hereof and as of the Closing Date as follows:

          4.1.  Authority.  The Seller has all requisite right, power and
                ---------                                                
authority, without the consent of any other person or entity, to execute and
deliver this Agreement and the agreements to be executed and delivered by Seller
at Closing and to carry out the transactions contemplated hereby and thereby,
including the sale of the OrthoNet Shares.  All actions required to be taken by
Seller to authorize the execution, delivery and performance of this Agreement
and all agreements and transactions contemplated hereby have been duly and
properly taken.

          4.2.  Validity.  This Agreement and the agreements and other documents
                --------                                                        
to be delivered at Closing by Seller have been duly executed and delivered by
Seller and constitute valid and binding obligations of Seller, enforceable in
accordance with their respective terms.  The execution and delivery of this
Agreement and the other agreements contemplated hereby and the consummation of
the transactions contemplated hereby and thereby will not (immediately, upon
notice, with the passage of time, or both) result in the creation of any lien,
charge or encumbrance of any kind or the termination or acceleration of any
indebtedness or other obligation of OrthoNet, and are not prohibited by, do not
and will not violate or conflict with any provision of, and do not and will not
constitute a default under or a breach of (i) the charter or by-laws of
OrthoNet, (ii) any contract, agreement or other instrument to which Seller or
OrthoNet is a party or by which Seller or OrthoNet or any of their assets is
bound, (iii) any order, decree or judgment of any court or governmental agency,
or (iv) any law, rule or regulation applicable to OrthoNet, Seller or the
Florida Business.

          4.3.  Due Organization and Ownership.
                ------------------------------ 


                                       -4-

<PAGE>

          (a)  OrthoNet is a corporation duly organized, validly existing and in
good standing under the laws of Florida, and has full power and authority and
all requisite rights, licenses and permits to carry on the Florida Business as
it is presently conducted by OrthoNet.  OrthoNet does not engage in business in
any state other than the State of Florida.

          (b)  The authorized capital stock of OrthoNet consists of one thousand
(1,000) shares of common stock, $0.01 par value, of which 1,000 shares are
issued and outstanding on the date hereof.  All of the OrthoNet Shares have been
duly authorized and validly issued and are fully paid and nonassessable and were
not issued in violation of any preemptive or other right of any person.  There
are no outstanding options, rights, warrants, conversion rights or other
agreements or commitments to which Seller or OrthoNet is a party or binding upon
Seller or OrthoNet providing for the issuance or transfer by Seller or OrthoNet
of any of the capital stock of OrthoNet.  Seller is the sole record and
beneficial owner of the OrthoNet Shares and has good and marketable title to
such OrthoNet Shares and the absolute right, power and capacity to sell, assign,
transfer and deliver such OrthoNet Shares to Vivra free and clear of any liens,
encumbrances, pledges, security interests, restrictive agreements, options,
rights of first refusal, transfer restrictions, conditional sales agreements,
voting trust arrangements, voting agreements or claims of any nature whatsoever.
Seller is conveying to Vivra good and marketable title to the OrthoNet Shares
free of any interest whatsoever of third parties.  Seller is the only officer or
director of OrthoNet.

          4.4.  Consents.  Except as described on Schedule 4.4, no approval,
                --------                          ------------              
authorization, registration, consent, order or other action of or filing with
any person, including any court, administrative agency or other governmental
authority, is required for the execution and delivery by Seller of this
Agreement or the agreements contemplated hereby or the consummation of the
transactions contemplated hereby and thereby, including the transfer of the
OrthoNet Shares to VOR.

          4.5.  Transactions with Affiliates.  Except as described on Exhibit
                ----------------------------                          -------
4.5, neither Seller, nor any of its Affiliates (as hereinafter defined) directly
- ---                                                                             
or indirectly:  (a) owns any debt, equity or other interest in any corporation,
association or other entity which is a competitor, provider, lessor, lessee,
customer or supplier of the Florida Business; (b) has any cause of action or
other claim against or owes any amount to, or is owed any amount by, OrthoNet;
(c) has any interest in or owns any property or right used in the conduct of the
Florida Business; (d) is a party to any contract, lease, agreement, arrangement
or commitment of which OrthoNet is a party or which is used in the conduct of
the Florida Business; or (e) received from or furnished to the Florida Business
any goods or services.  For purposes of this Agreement, the term "Affiliate"
means any member of the immediate family of Seller, or any corporation,
partnership, trust or other entity in which Seller or any member of its
immediate family is a director, officer, partner or trustee or has an equity
interest in excess of 5%.


                                       -5- 


<PAGE>

          4.6.  Financial Statements.  The balance sheet and income statement of
                --------------------                                            
OrthoNet as of and for the fiscal years ended December 31, 1994 and December 31,
1995 (i) are attached hereto as Schedule 4.6 (the "Financial Statements"); (ii)
                                ------------                                   
are materially accurate, correct and complete based on the modified cash method
of accounting; (iii) fairly present the financial condition and results of
operations of OrthoNet as of the dates and for the periods indicated based on
the modified cash method of accounting; and (iv) are prepared on a modified cash
basis in accordance with the books of account and records of OrthoNet.  The
Florida Business is not subject to any liability or obligation (whether
absolute, accrued, contingent or otherwise and whether matured or unmatured)
other than (a) amounts owed to physicians or physical therapists and (b)
liabilities and obligations described on Schedule 4.6.  VOR agrees to pay the
                                         ------------                        
reasonable fees and expenses of OrthoNet's accountant relating to the
preparation of the Financial Statements.  The Seller represents and warrants as
follows:

          (a)  the aggregate of all capitated revenues collected by the
     Florida Business for the period from January 1, 1995 to December 31,
     1995 was $2,784,013.16 and the aggregate of all compensation paid to
     physicians or physical therapists by the Florida Business during such
     period was $2,097,227.24;

          (b)  as of the date hereof and as of Closing, after giving effect
     to any outstanding checks or debit orders of any type, OrthoNet has cash
     in its bank accounts equal to the sum of (i) $450,000 (such amount being
     referred to as the "Additional Reserves"), plus (ii) an amount sufficient
     to pay all amounts owed, pursuant to the contractual terms of the
     applicable providers agreements, to physicians, physical therapists
     or other service providers for services rendered prior to the Closing and
     all other liabilities of the Company (such cash amount being referred to
     as the "Base Reserves"); and

          (c)  the Base Reserves are equal to or greater than 85% of the
     aggregate gross revenues collected by OrthoNet in the months of
     December, January and February, 1996.

The parties agree to prepare a Settlement Statement pursuant to the provisions
of Section 5 of the Escrow Agreement.  The Settlement Statement will set forth,
among other things, the actual Cash Reserves and liabilities of OrthoNet as of
the Closing Date.

          4.7.  Books and Records.  The books of account and other records
                -----------------                                         
(financial and otherwise) of the Florida Business are materially complete and
correct and are maintained in accordance with good business practices.

          4.8.  Interim Change.  Except as described in reasonable detail on
                --------------                                              
Schedule 4.8, since December 31, 1994, OrthoNet has operated the Florida
- ------------                                                            
Business only in the ordinary 


                                       -6- 


<PAGE>

course, consistent with past practices, and there
has not been any of the following in connection with the Florida Business:

          (a)  any adverse change in the financial condition, assets,
     liabilities, personnel, prospects or business affairs of the Florida
     Business or in its relationships with suppliers, vendors, customers,
     patients, payors, providers, representatives, employees or others nor
     has there been the occurrence of any event or condition which could
     reasonably be expected to have such an effect;

          (b)  any declaration or payment of any dividend or other
     distribution with respect to the equity interests of OrthoNet;

          (c)  any forgiveness, cancellation, write-off or write-down of
     debts or claims, or waiver of any rights related to the Florida
     Business other than in the ordinary course of business;

          (d)  any increase in the compensation, benefits or method or rate of
     reimbursement paid, payable or to become payable by OrthoNet or the
     Florida Business to any employee, independent contractor or other person
     who renders services in connection with the Florida Business, or any
     payments of compensation other than salary to any of such employees;

          (e)  any incurrence of debt other than trade payables incurred in
     the ordinary course of business;

          (f)  any entry into any material agreement, commitment or
     transaction by OrthoNet or any capital expenditure in excess of
     $5,000;

          (g)  any incurrence of any security interest, lien, charge,
     encumbrance or claim on, or any damage or loss to, any of the Assets;

          (h)  any change in the method of operation or practices of the
     Florida Business, including any change in the accounting, billing or
     invoicing procedures of the Florida Business;

          (i)  any sale, transfer or disposal by or for the Florida
     Business or purchase by or for the Florida Business of any properties
     or assets, except in the ordinary course consistent with past
     practices; or

          (j)  any agreement, commitment or understanding by Seller or
     OrthoNet to do any of the foregoing.


                                       -7-


<PAGE>


          4.9.  Insurance.  Schedule 4.9 contains a list of all policies of
                ---------   ------------
insurance or fidelity bonds maintained in connection with or covering the
assets, personnel, products or operations of the Florida Business.  OrthoNet has
delivered to VOR accurate and complete copies of all such policies.  Such
policies are in full force and effect.  OrthoNet has maintained insurance
policies since its incorporation with coverage substantially the same as that
provided under the policies listed on Schedule 4.9.  Schedule 4.9 also contains
                                      ------------   ------------              
a list of all claims related to the Florida Business made on such policies
during the last 3 years.

          4.10.  Licenses and Permits.  Schedule 4.10 contains an accurate,
                 --------------------   -------------                      
correct and complete list of each license, permit, provider number, certificate,
approval, exemption, franchise, registration, variance, accreditation or
authorization used or required for the operation of the Florida Business
(collectively, the "Licenses and Permits").  The Licenses and Permits are valid
and in full force and effect and there are not pending, or, to the knowledge of
Seller threatened, any proceedings which could result in the termination,
revocation, limitation or impairment of any License or Permit.  The
Licenses and Permits are all of the licenses, permits, provider numbers,
certificates, approvals, franchises, registrations, accreditations and other
authorizations as are necessary or appropriate in order to enable OrthoNet to
own and conduct the Florida Business and to occupy its real property.  No
violations have been recorded in respect of any Licenses and Permits, and the
Seller knows of no meritorious basis therefor.

          4.11.  Assets.  OrthoNet is the sole and exclusive legal and equitable
                 ------                                                         
owner of all right, title and interest in all of the assets, properties,
contracts, rights and claims used in, relating to or arising from the conduct of
the Florida Business (the "Assets").  OrthoNet has good and marketable title to
the Assets and such Assets are not and will not be subject to any pledge,
option, escrow, hypothecation, lien, security interest, financing statement,
lease, license, easement, right of way, encumbrance or other restriction of any
kind.  All of the Assets, whether owned or leased by OrthoNet, are in good
operating condition and repair (reasonable wear and tear excepted) and are
suitable for the purposes for which they are presently being used.  The Assets
will furnish Vivra with all of the capacity and rights to operate the Florida
Business in the same manner as it is presently being operated by OrthoNet and
Seller and to otherwise conduct the Florida Business in the same manner as
presently conducted.

          4.12.  Real Estate.  OrthoNet does not own any real property. 
                 -----------                                            
Schedule 4.12 sets forth an accurate, correct and complete list of all real
- -------------                                                              
property used in the conduct of the Florida Business (the "Real Estate"). 
OrthoNet has been in peaceable possession of the Real Estate since the
commencement of the original term of the lease related thereto.  The Seller does
not know of any environmental audits or similar reports relating to the Real
Estate.

          4.13.  Personal Property Leases.  OrthoNet does not lease any of the
                 ------------------------                                     
personal property that is used in the Florida Business.  Schedule 4.13 sets
                                                         -------------     
forth an accurate, correct and complete list of all office furnishings and
equipment owned by OrthoNet.


                                       -8- 

<PAGE>

          4.14.  Trade Secrets, Know-How and Proprietary Information.  Schedule
                 ---------------------------------------------------   --------
4.14 contains a list of all information in the nature of trade secrets, know-how
- ----                                                                            
or proprietary information, including but not limited to, software, copyrighted
and copyrightable material, electronic data processing systems, program
specifications and technical information relating to or used in the Florida
Business (the "Proprietary Information").  All Proprietary Information:
(a) is owned solely and exclusively by OrthoNet; and (b) has been
maintained as a trade secret by OrthoNet by taking all necessary action to
protect such Proprietary Information as a trade secret.  Seller does not have
knowledge of any violation of any trade secret rights or copyrights with respect
to the Proprietary Information by any other person, nor of any violation by
OrthoNet of any trade secret rights, patents, trademarks or copyrights of any
other person.

          4.15.  Material Contracts.  Schedule 4.15 contains a list of all
                 ------------------   -------------                       
contracts, agreements, commitments, instruments, leases and arrangements,
including all amendments or supplements thereto, related to the Florida Business
to which Seller or OrthoNet is a party or bound, or by which any of the Assets
or the Florida Business are subject or bound, which (a) are material to the
Florida Business or (b) meet any of the following descriptions (collectively,
the "Material Contracts"): (i) any contracts, agreements or arrangements with
insurance companies, managed care plans, employers or other third parties
pursuant to which health care services are provided to patients; (ii) any
contract or agreement not entered into in the normal course of business; (iii)
any contract or agreement which involves future payments or receipts in excess
of $5,000; and (iv) any contracts or agreements with physicians or other
providers of medical services on behalf of the Florida Business.  Seller has
delivered to VOR accurate and complete copies of each Material Contract.  All
Material Contracts are valid, binding and enforceable in accordance with their
terms and are in full force and effect.  Neither OrthoNet, nor to the best of
Seller's knowledge, any other party to any Material Contract is in breach of any
provision of, in violation of, or in default under the terms of any Material
Contract.  No event has occurred which with notice or passage of time or both
would result in a breach of any provision of, or default under, the terms of any
Material Contract.  Except as indicated on Schedule 4.15, the purchase and sale
                                           -------------                       
of the OrthoNet Shares, without notice to, or the consent of, any other party
will not constitute a default under, or a breach of, any Material Contract, and
after Closing each Material Contract will continue to be valid and binding and
enforceable by OrthoNet according to its terms.

          4.16.  Employees; Independent Contractors.
                 ---------------------------------- 

          (a)  Schedule 4.16(a)  is an accurate, correct and complete schedule
               ----------------                                               
containing the name, present position and rate of compensation of all employees
of OrthoNet.  OrthoNet does not have any written or oral agreements with any of
its employees.   Except as set forth in Schedule 4.16(a), (i) OrthoNet has
                                        ----------------
complied with all local, state, and federal laws respecting the employment of
such employees; and (ii) OrthoNet has paid all accrued wages and compensation


                                       -9- 

<PAGE>


due to employees, including all earned and accrued vacations or vacation pay,
holidays or holiday pay, sick days or sick pay, and bonuses, other than with
respect to the current payment period.

          (b)  Schedule 4.16(b) is an accurate, correct and complete schedule
               ----------------                                              
containing the name of all independent contractors used by OrthoNet in the
conduct of the Florida Business and a brief description of the types of services
provided to the Florida Business by such independent contractor.  During the
past 24 months the average compensation paid by OrthoNet to the independent
contractors listed on Schedule 4.16(b) in any month has been less than 85% of
the revenues collected by the Florida Business for such month.  OrthoNet has no
knowledge of any fact, condition or event which would cause OrthoNet's
relationship with any independent contractor after the Closing to be materially
different than the current relationship of such independent contractor with
OrthoNet.

          4.17.  Employee Benefit Plans.  Schedule 4.17 sets forth an accurate,
                 ----------------------   -------------                        
correct and complete list of all bonus, profit sharing, pension, deferred
compensation, incentive or other compensation plans or arrangements (all of the
foregoing, whether in existence by virtue of agreement, policy, course of
dealing or applicable law, being herein called "Benefit Plans") maintained or
                                                -------------                
contributed to by OrthoNet.  All contributions to, and payments from, the
Benefit Plans that may have been required to be made in accordance with the
Benefits Plans and all applicable laws, rules and regulations have been timely
made.  All Benefit Plans have been operated and maintained in accordance with
the terms thereof and all applicable laws, rules and regulations.  All reports,
returns and similar documents with respect to the Benefit Plans required to be
filed with any government agency or distributed to any Benefit Plan participant
have been fully and timely filed or distributed.

          4.18.  Taxes.  (a)  Seller has filed or will file all returns,
                 -----                                                  
declarations and reports and all information returns and statements
(collectively, "Returns") required to be filed or sent by or on behalf of
OrthoNet with respect to all foreign, federal, state, county, local and other
taxes of every kind, including income, gross receipts, excise, franchise,
property, value added, import duties, employment, transfer, payroll, sales and
use taxes and any additions to tax and any interest or penalties thereon
(collectively, "Taxes") for any period ending before the Closing Date.  As of
the time of filing, the Returns accurately and correctly reflected, and Returns
not yet filed as of the date hereof will accurately and correctly reflect, the
income, business, assets, operations, activities and status of OrthoNet and any
other information required to be shown thereon.  OrthoNet has timely paid all
Taxes required to be paid prior to the date hereof and will timely pay all Taxes
that will be shown as due and payable on its Returns required to be filed or
sent after the date hereof.  The Seller agrees to pay, and indemnify VOR from,
any Taxes relating in any way to the period prior to the Closing Date; provided,
however, that VOR will pay any Taxes, if any, relating to the recognition after
the Closing Date of the Additional Reserves as income; provided, however, that
VOR shall not be responsible for, and Seller shall pay any related interest and
penalties which accrue prior to the date that Vivra determines that the
Additional Reserves are not


                                      -10-

<PAGE>

owed to physicians, physical therapists, other service providers or payors.
VIVRA will recognize as income that portion of the Additional Reserves if and
when it determines that such amounts are not owed to physicians, physical
therapists, other service providers or payors.

          (b)  At all times since January 1, 1992, OrthoNet has filed all
notices, tax returns, documents or other forms, met all eligibility
requirements, and taken all other actions as is, or was, necessary to validly
elect and maintain "S Corporation" status under Section 1361 of the Internal
Revenue Code of 1986, as amended (the "Code").  OrthoNet did not have any
operations or income prior to December 31, 1991.  The State of Florida does not
tax the net income of S Corporations.  At all times prior to the date hereof,
OrthoNet has used the accrual method of accounting for income tax purposes. 
During the past two years OrthoNet has not made, and as a result of the
transactions contemplated by this Agreement, it will not be necessary or
appropriate for OrthoNet to make, any adjustments pursuant to Section 481 of the
Code.

          (c)  As soon as practicable after the close of OrthoNet's tax year,
Seller and its accountants shall prepare the federal and state S corporation
income tax returns for OrthoNet for 1995 and the period to date in 1996 (the
"Final Tax Returns").  The Final Tax Returns shall be completed using the
accrual method of accounting.  VOR and OrthoNet shall permit the Seller and its
accountants to have full and free access to OrthoNet's books and records,
without charge, to the extent such access is necessary or helpful for
preparation of the Final Tax Returns.  The Final Tax Returns shall, in
accordance with Internal Revenue Code Section 1362(e)(6), reflect the income of
OrthoNet for the period beginning January 1, 1995 and ending on the Closing Date
and shall otherwise be prepared on a basis consistent with OrthoNet's historical
practices.  VOR shall have the right to review and approve the Final Tax Returns
prior to such returns being filed.  The Final Tax Returns shall be filed
by Seller no later than the due dates for such returns.  Seller shall pay when
due all Taxes payable with respect to the Final Tax Returns.  VOR agrees not to
file an amended income tax return for OrthoNet for any taxable period of
OrthoNet ending prior to or on Closing, without the prior written consent of
Seller, which may not be unreasonably withheld if such amendment is consistent
with an audit or other request of the internal revenue service.  Seller and its
representatives shall have the right to participate in any meetings which Vivra
or its representatives may have with the internal revenue service relating to
taxable periods ending on or before Closing.

          (d)  Seller hereby represents and warrants that OrthoNet has timely
filed all Form 1099s required to be filed for each physician, physical therapist
or other service provider that provided services for, or on behalf of, OrthoNet
during the period from January 1, 1995 to an including December 31, 1995.

          4.19.  Litigation.  Except as set forth in Schedule 4.19, OrthoNet and
                 ----------                          -------------              
Seller are not engaged in, or a party to, or to the best of the Seller's
knowledge, threatened with, any suit, action, proceeding, or investigation or
legal, administrative, arbitration or other method of settling


                                  -11-


<PAGE>

disputes and Seller does not know, anticipate or have notice of any basis for
any such action.  Neither Seller nor OrthoNet has received notice of any
investigation threatened or contemplated by any foreign, federal, state or local
government or regulatory authority, including those involving the Florida
Business' employment practices or policies or compliance with environmental
regulations.  The Florida Business and the Assets are not subject to any order,
decree or judgment of any court or governmental agency or instrumentality.
Neither Seller nor OrthoNet has received notice of any adverse finding or
determination in connection with any review conducted by any entity, commission,
board or agency in connection with the Medicare or Medicaid program or in
connection with any health insurer or health care payor.

          4.20.  Compliance.  The Florida Business and the Assets, and Seller's
                 ----------                                                    
and OrthoNet's operation thereof, conform and have conformed in all material
respects to all applicable statutes, codes, ordinances, licensing requirements,
laws, rules and regulations.  OrthoNet has complied in all material respects
with all statutes, codes, ordinances, licensing requirements, laws, rules,
regulations, decrees, awards or orders applicable to the Florida Business or its
operations, including those relating to employment and environmental matters and
all laws relating to Medicare and/or Medicaid, including, but not limited to, 42
U.S.C. Section 1320(a)-7(a) et seq., 42 U.S.C. Section 1320(a)-7(b) et seq., 31
                            -- ---                                  -- ---     
U.S.C. Section 3729, and any other federal or state provision relating
to the filing of false claims or payments for referrals; and there is
not and will not be any liability arising from or related to any violations
thereof and Seller has no knowledge of any violations of such laws.  Seller has
not received any notice from any governmental body or other person alleging
Seller or OrthoNet has failed to comply with any such law, rule or regulation. 
To the Seller's knowledge, there is no anticipated change in any such law, rule
or regulation which would adversely affect the Florida Business or the Assets.

          OrthoNet has timely filed, in a complete and correct manner, all
requisite claims and other reports required to be filed in connection with all
state and federal Medicare and Medicaid programs or in connection with any of
the Material Agreements, in either case, which are due on or before the date
hereof.  There are no claims, actions, payment reviews, or appeals pending or,
to the best of the Seller's knowledge, threatened before any commission, board
or agency, including, without limitation, any intermediary or carrier, the
Administrator of the Health Care Financing Administration, or the Florida
Department of Health and Rehabilitative Services or any other state or federal
agency with respect to any Medicare or Medicaid claims filed by OrthoNet on or
before the date hereof or program compliance matters, which would adversely
affect OrthoNet, the Assets, the operation or utility thereof, or the
consummation of the transactions contemplated hereby.  No validation review or
program integrity review related to OrthoNet has been conducted by any
commission, board or agency in connection with the Medicare or Medicaid program,
and no such reviews are scheduled, pending nor threatened against or affecting
OrthoNet, any of the Assets or the consummation of the transactions contemplated
hereby.


                                     -12-


<PAGE>


          4.21.  Brokers.  Neither Seller nor OrthoNet have retained any broker
                 -------                                                       
or finder or incurred any liability or obligation for any brokerage fees,
commissions or finder's fees with respect to this Agreement or the transactions
contemplated hereby.

          4.22.  Certain Agreements.  All contracts or agreements with insurance
                 -------------------                                            
companies, managed care plans, employers and physicians were entered into in the
ordinary course of business at usual and normal prices and rates.  The Seller
has no reason to believe that any insurance company, managed care plan, employer
or physician will cease to do business with OrthoNet as a result of the
consummation of any transactions contemplated hereby.  OrthoNet is not involved,
directly or indirectly, in any improper or illegal activities with respect to
any of its referral sources, including but not limited to the payment of
gratuities, gifts or otherwise to such referral sources.  Except
as specifically described on Schedule 4.22, (a) to Seller's actual knowledge
                             -------------                                  
without any investigation, there is no law, rule or regulation, (b) there is no
provision or term in any Material Contract or any agreement between OrthoNet and
any physician or physical therapist, or (c) there is no policy of OrthoNet or of
any of the entitles listed on Schedules 1(a), 1(b) or 1(c) of the Employment
Agreement, which (I) limits the amount or percent of revenues generated under
any of the Material Contracts which OrthoNet, Vivra or VOR may retain (and not
pay to physicians, physical therapists, other service providers or payors) or
(II) establishes or provides for a minimum amount which VOR, Vivra or OrthoNet
must pay to physicians, physical therapists, other service providers or payors
for services rendered under any of the Material Contracts.

          4.23.  Physicians.  To the best of the Seller's knowledge, during the
                 ----------                                                    
past five years and as of the date hereof, and at the Closing, each physician
who is or was employed by, or who renders or has rendered services on behalf of,
the Florida Business:

          (a)  Has been duly licensed and registered, and in good standing
     under the laws of the State of Florida, to engage in the practice of
     medicine, and said license and registration have not been suspended,
     revoked or restricted in any manner;

          (b)  Has current controlled substances registrations issued by
     the State of Florida and the United States Drug Enforcement
     Administration, which registrations have not been surrendered,
     suspended, revoked or restricted in any manner;

          (c)  Except as set forth on Schedule 4.23, has not been a party
                                      -------------                      
     or subject to:

               (i)  any malpractice suit, claim (whether or not filed
          in court), settlement, settlement allocation, judgment,
          verdict or decree;


                               -13-


<PAGE>

               (ii)  any disciplinary, peer review or professional
          review investigation, proceeding or action instituted by any
          licensure board, hospital, medical school, health care
          facility or entity, professional society or association,
          third party payor, peer review or professional review
          committee or body, or governmental agency;

               (iii)  any criminal complaint, indictment or criminal
          proceedings;

               (iv)  any investigation or proceedings, whether
          administrative, civil or criminal, relating to an allegation
          of filing false health care claims, violating anti-kickback
          laws, or engaging in other billing improprieties;

               (v)  any organic or mental illness or condition that
          impairs or may impair such physician's ability to practice
          medicine;

               (vi)  any dependency on, habitual use or episodic abuse
          of alcohol or controlled substances, or any participation in
          any alcohol or controlled substance detoxification,
          treatment, recovery, rehabilitation, counseling, screening
          or monitoring program;

               (vii)  any allegation, or any investigation or
          proceeding based on any allegation of violating professional
          ethics or standards, or engaging in illegal, immoral or
          other misconduct (of any nature or degree), relating to the
          practice of medicine; and

               (viii)  any denial or withdrawal of an application in
          any state for licensure as a physician, for medical staff
          privileges at any hospital or other health care entity, for
          board certification or recertification, for participation in
          any third party payment program, for state or federal
          controlled substances registration, or for malpractice
          insurance.

          (d)  complies with the requirements, if any, set forth in all
     applicable Material Contracts.

          4.24.  Accounts Receivable.  Schedule 4.24 sets forth an accurate,
                 -------------------   -------------                        
correct and complete list of all outstanding accounts and notes receivable as of
January 31, 1996.  All outstanding accounts and notes receivable reflected on
Schedule 4.24 are due and valid claims against account debtors for services
- -------------                                                              
rendered, collectible in full and subject to no defenses, offsets


                                       -14-


<PAGE>


or counterclaims and have been outstanding for 30 days or less.  All
receivables arose in the ordinary course of business.  OrthoNet has not incurred
any liabilities to customers for discounts, returns, promotional allowances or
otherwise, except as provided for on the Financial Statements.

          4.25.  Audits/Accountings.  There are no audits, accountings or
                 ------------------                                      
payment reviews pending or, to the best of Seller's knowledge, threatened in
connection with any Material Contracts including without limitation any
agreements with physicians or with insurance companies, managed care plans,
employers, or other third party payors, and all amounts owed under any such
agreements have been appropriately reconciled and there are no outstanding
balances in connection therewith.  OrthoNet is not a party to any risk-pooling
agreements or arrangements whatsoever.

          4.26.  Pooling of Interests.  Except as contemplated or required under
                 --------------------                                           
this Agreement:
 
          (a)  OrthoNet has not been a division or subsidiary of another
     corporation for the two years preceding the Closing;

          (b)  OrthoNet has not held more than 10% of the stock of any
     other company or of Vivra at the date of initiation of the
     transactions contemplated by this Agreement; 

          (c)  the transactions contemplated by this Agreement shall be
     completed in a single transaction or within one year after the plan is
     initiated;

          (d)  the transactions contemplated by this Agreement shall
     be substantially voting common stock in exchange for voting common
     stock; 

          (e)  OrthoNet has not, in order to consummate this transaction,
     changed its voting common stock structure during the two years
     immediately preceding the Closing;

          (f)  during the two years preceding the Closing, OrthoNet has not
     purchased treasury stock to consummate or avoid a business combination
     transaction;

          (g)  OrthoNet has not rearranged the relative ownership shares
     among its existing voting shareholders as a part of this transaction; 

          (h)  none of the Vivra Shares shall be restricted as to voting
     rights as part of this transaction; 


                                      -15-


<PAGE>

          (i)  there is no "earnout" contingency as part of this transaction;

          (j)  no financial arrangements have been made with the Seller
     which negate the exchange of equity securities (such as loans made
     against stock issued);

          (k)  Schedule 4.26 sets forth an accurate and complete list of
               -------------                                            
     (i) the amount and date of all dividends or distributions that the
     Company has declared or paid to its stockholders (or affiliates of its
     stockholders), since January 1, 1994 through Closing, and (ii) the
     amount of any salary or compensation paid by OrthoNet to Seller or any
     of its affiliates since January 1, 1995 through Closing; and

          (l)  to the best of the knowledge of the Seller, neither
     OrthoNet, nor any of its affiliates, officers, or directors has taken
     any action or failed to take action which action or failure to take
     action would jeopardize the treatment of Vivra's acquisition of
     OrthoNet as a "pooling of interests" for accounting purposes.

          4.27.  Receipt of Information.  Seller has received:  (i) a copy of
                 ----------------------                                      
Vivra's prospectus dated February 9, 1995; (ii) a copy of Vivra's 1994 Annual
Report to Stockholders; (iii) a copy of Vivra's Annual Report on Form 10-K for
the fiscal year ended November 30, 1994; (iv) copies of Vivra's Quarterly
Reports on Form 10-Q for the fiscal quarters ended February 28, 1995, May 31,
1995 and August 31, 1995; (v) Vivra's press release dated January 24, 1996; and
(vi) a copy of Vivra's Proxy Statement for Vivra's annual meeting held on March
28, 1995.

          4.28.  Disclosure.  Neither this Agreement nor any attachment,
                 ----------                                             
schedule, certificate or other statement delivered pursuant to this Agreement or
in connection with the transactions contemplated hereby contains or will contain
any untrue statement of a material fact or omits or will omit to state a
material fact necessary in order to make the statements and information
contained herein or therein, in light of the circumstances in which they were
made, not misleading.  Each list and description contained on any Schedule
delivered pursuant to this Agreement is accurate and complete.  The Seller is
not aware of any information necessary to enable a prospective purchaser of the
OrthoNet Shares or the Florida Business to make an informed decision with
respect to the purchase of the OrthoNet Shares which has not been expressly
disclosed to VOR in writing in this Agreement.


                                    ARTICLE V

                      REPRESENTATIONS AND WARRANTIES OF VOR

          Vivra hereby represents and warrants to the Seller as of the date
hereof as follows:


                                      -16-

<PAGE>


          5.1.  Authority.  VOR has all requisite right, power and authority,
                ---------                                                    
without the consent of any other person, to execute and deliver this Agreement
and the agreements to be delivered at Closing and to carry out the transactions
contemplated hereby and thereby.  All actions required to be taken by VOR to
authorize the execution, delivery and performance of this Agreement and all
agreements and transactions contemplated hereby have been duly and properly
taken.

          5.2.  Validity.  This Agreement has been, and the agreements and other
                --------                                                        
documents to be delivered at Closing by VOR will be, duly executed and delivered
by VOR and constitute valid and binding obligations of VOR, enforceable in
accordance with their respective terms.  The execution and delivery of this
Agreement and the other agreements contemplated hereby and the consummation of
the transactions contemplated hereby and thereby do not and will not violate or
conflict with any provision of, and do not and will not constitute a default
under or a breach of (i) the charter or By-laws of VOR, (ii) any contract,
agreement or other instrument to which VOR is a party, (iii) any order or
judgment of any court or governmental agency or (iv) any law, rule or regulation
applicable to the VOR.

          5.3.  Consents.  No approval, authorization, registration,
                --------
consent, order or other action of or filing with any person, including any
court, administrative agency or other governmental authority is required for the
execution and delivery by VOR of this Agreement or the agreements contemplated
hereby or the consummation of the transactions contemplated hereby and thereby.

          5.4.  Due Organization.  VOR is a corporation organized and validly
                ----------------
existing under the laws of the State of Delaware and has full corporate power
and authority to carry on the business in which it is engaged.

          5.5.  Capitalization of VOR.  VOR is authorized to issue 3,250,000
                ---------------------
shares of Class 1 common stock, $.01 par value (the "Class 1 Common Stock") and
16,750,000 shares of Class 2 common stock, $.01 par value (the "Class 2 Common
Stock").  On the date of this Agreement, 5,206,500 shares of Class 2 Common
Stock has been issued or subject to any option and Vivra Specialty Partners,
Inc. ("VSP") owns all of the issued and outstanding shares of Class 2 Common
Stock.  Vivra Incorporated owns all of the outstanding capital stock of VSP.

          5.6.  Brokers.  VOR has not retained any broker or finder or incurred
                -------                                                        
any liability or obligation for any brokerage fees, commissions or finder's fees
with respect to this Agreement or the transactions contemplated hereby.

          5.7.  Vivra Stock.  The Vivra Shares have been duly authorized by all
                -----------                                                    
necessary corporate action of Vivra and when delivered hereunder will be validly
issued, fully paid and nonassessable.


                                      -17-

<PAGE>


                                   ARTICLE VI

                                    COVENANTS

          Seller and VOR, as applicable, hereby agree to keep, perform and fully
discharge the following covenants and agreements.

          6.1.  Continued Assistance.  The Seller and VOR shall cooperate in an
                --------------------                                           
orderly transfer of the Florida Business and the continuation thereof by Vivra
or its successor or assigns.  From time to time, at VOR's request and without
further consideration, the Seller shall execute, acknowledge and deliver such
documents, instruments or assurances and take such other action as VOR may
reasonably request to more effectively assign, convey and transfer the Florida
Business and its operations and will assist VOR in the vesting, collection or
reduction to possession of its assets, properties, rights and claims.  The
Seller shall give VOR and its affiliates access to such books and records as VOR
may request in order to allow VOR or its affiliates to audit the financial
statements of the Florida Business for prior years.  VOR shall cooperate with
OrthoNet and provide such assistance as OrthoNet may reasonably request, at the
OrthoNet's expense, in connection with the defense or prosecution of any claims,
actions or investigations arising out of or related to the conduct of the
Florida Business prior to the Closing.

          6.2.  Records and Documents.  For five (5) years following the Closing
                ---------------------                                           
Date, each party hereto shall retain and grant to the other party and its
representatives, at such other party's request, access to and the right to make
copies of those records and documents which are retained by such party, as may
be necessary in connection with the business and affairs of such other party
after the Closing.  If during such time any party elects to dispose of such
records, such party shall first give each other party hereto sixty (60) days'
written notice, during which period such other party shall have the right to
obtain the records without further consideration.

          6.3.  Certain Payments.  Seller shall promptly pay when due and fully
                ----------------                                               
discharge any income, excise, employment, sales or use taxes arising as a result
of the sale, transfer, conveyance or assignment of the OrthoNet Shares.  The
Seller shall keep VOR apprised of the status and all aspects of any litigation
which might affect VOR or the Florida Business, either directly or indirectly,
and Seller shall comply with all court orders relating directly or indirectly to
such litigation.  VOR shall provide reasonable cooperation to the Seller in
handling such litigation; provided, that the Seller shall reimburse VOR for its
out-of-pocket expenses incurred in connection with such cooperation.  

          6.4.  Confidentiality.  After the Closing Date, except as may be
                ---------------                                           
required for tax purposes or other regulatory purposes, neither the Seller nor
any of its affiliates nor any of the respective successors and assigns of the
Seller or any of its affiliates shall (a) retain any document, 


                                      -18-


<PAGE>

databases or other media embodying any confidential or proprietary know-how
which is used in the Florida Business or use, publish or disclose to any third
person any such confidential or proprietary know-how or (b) use, publish or
disclose any information concerning Vivra or VOR, its affiliates, the Assets,
the Florida Business, the customers of the Florida Business or the terms of this
Agreement, the Employment Agreement, the Option Agreement or any of the
transactions contemplated thereby.

          6.5.  Covenant Not to Compete.  (a)  Seller hereby agrees that for a
                -----------------------                                       
period of three (3) years after the Closing, the Seller shall not, directly or
indirectly, whether acting alone or as a director, officer, employee, agent,
consultant, partner, owner or member, as appropriate, of any person, firm,
company, corporation, association, partnership or other entity:

          (i)  have any ownership or economic interest in, or participate
     in or manage any business directly or indirectly engaged, in a
     business the same as, or similar to, the Florida Business;

          (ii)  solicit, serve or accept any business from patients,
     insurance companies, managed care plans, employers or other customers
     of the business then conducted by Vivra or VOR for services
     competitive with those of the Florida Business or request, induce or
     advise patients, insurance companies, managed care plans, employers or
     other customers of the business as then conducted by Vivra VOR to
     withdraw, curtail or cancel their business with Vivra or VOR or assist,
     induce, help or join any other person or company in doing either of the
     above activities;

          (iii)  solicit the services of any employee, consultant or
     provider which renders services to, or for the benefit of, Vivra or
     VOR or any of its affiliates for its own use or benefit or for any
     other person's or company's use or benefit, or induce or help to
     induce any employee, consultant or provider which renders services to,
     or for the benefit of, Vivra or VOR or any of its affiliates to leave
     for other employment, without Vivra's or VOR's prior written consent;
     or

          (iv)  employ or hire, or cause to be employed or hired, any
     person who is an employee, consultant or provider which renders
     services to, or for the benefit of, the Florida Business or VOR or any
     of its affiliates;

          (b)  Notwithstanding Section (a) above:  (i) Seller may render
consulting services to third parties provided that such consulting services do
not relate in any way to the establishment, maintenance or operation of a
medical network, (ii) if VOR fails to pay Seller an amount which is due under
this Agreement or the Employment Agreement (and such amount is not subject to a
reasonable dispute) for a period of ten (10) days after Seller gives VOR written


                                      -19-


<PAGE>

notice that such amount is past due, then the provisions of Section (a) shall be
of no force or effect until such amount is paid; provided, however, that if
Seller has entered into a binding contractual relationship (a "Subsequent
Contract") after such ten (10) days period and the Subsequent Contract requires
Seller to render services that conflict with the provisions of Section (a), then
the payment by VOR of such amounts shall not prohibit Seller from rendering the
services called for by the Subsequent Contract, and (iii) if VOR fails to
execute and deliver the Additional Option (as defined in the Employment
Agreement) after Seller has met the requirements for the Additional Option (and
the obligation of Buyer to grant the Additional Option is not subject to a
reasonable dispute) for a period of ten (10) days after Seller gives VOR written
notice that Seller has met the requirements for the Additional Option, then the
provisions of Section (a) shall be of no force or effect until the Additional
Option is executed and delivered to Seller; provided, however, that if Seller
has entered into a binding contractual relationship (a "Subsequent Contract")
after such ten (10) days period and the Subsequent Contract requires Seller to
render services that conflict with the provisions of Section (a), then the
execution and delivery of the Additional Option shall not prohibit Seller from
rendering the services called for by the Subsequent Contract.

          (c)  Seller agrees that any breach of this Section 6.5 will result in
                                                     -----------               
irreparable damage to Vivra and VOR for which Vivra and VOR will have no
adequate remedy at law, and, therefore, the Seller consents to any temporary or
permanent injunction or decree of specific performance by any court of competent
jurisdiction in favor of Vivra or VOR enjoining any such breach, without
prejudice to any other right or remedy to which Vivra and VOR shall be entitled.

          (d)  The necessity of each of the restrictions set forth in this
Section 6.5 and the nature and scope of each such restriction have been
- -----------
carefully considered, bargained for and agreed to by the parties.  However, in
the event that any portion of this Section 6.5 shall be determined by any court
                                   -----------                                 
of competent jurisdiction to be unenforceable by reason of its being extended
over too great a period of time or too large a geographic area or over too great
a range of activities, it shall be interpreted or rewritten to extend only over
the maximum period of time, geographic area, or range of activities as to which
it may be enforceable.  Each of the provisions herein shall be deemed a separate
and severable covenant.

          (e)  The parties hereto recognize that the agreements of Seller
contained in this Section 6.5 (the "Noncompetition Covenant") are considered by
                  -----------
Vivra and VOR to be an integral and valuable part of the transactions
contemplated by this Agreement.  The parties hereto also agree that the amount
of the monetary damage which Vivra or VOR would suffer should the Seller breach
the Noncompetition Covenant is difficult to measure or ascertain.  Therefore,
the parties agree that if Seller breaches the Noncompetition Covenant, then
Seller shall pay the Liquidated Damages Amount to Vivra as liquidated damages,
as a fair and reasonable estimate of the damages which would be sustained by
Vivra.  The "Liquidated Damages Amount" shall be five million dollars
($5,000,000) during the first, second and third years after Closing and two and


                                  -20-


<PAGE>


one-half million ($2,500,000) at all times thereafter.  The remedy provided to
Vivra in this Section 6.5(e) shall be cumulative with the Vivra's other remedies
              --------------
and nothing set forth herein shall limit or in any way affect Vivra's other
rights and remedies under this Agreement, or Vivra's right to seek any
appropriate relief, including the right to seek preliminary or permanent
injunctive relief to enforce the terms of the Noncompetition Covenant; provided,
that the amount owed by Seller to Vivra pursuant to this Section 6.5(e) shall be
                                                         --------------         
reduced by the amount, if any, that Vivra collects from Seller as liquidated
damages pursuant to the Employment Agreement.

          6.6.  Form 1099's.  Seller agrees to indemnify, hold harmless and
                -----------
defend VOR, from and against any and all loss, diminution in value, damage,
cost, penalties, expense (including court costs and attorneys' fees and expenses
and costs of investigation), suit, action, claim, deficiency, liability or
obligation related to or caused by or arising from (a) OrthoNet's failure to
file a Form 1099 for any physician which rendered services rendered to, or for
the benefit of, OrthoNet for any period prior to December 31, 1995, or (b)
OrthoNet filing an incorrect Form 1099.

          6.7.  [Reserved]

          6.8.  Interim Conduct of Business.  From the date hereof until the
                ---------------------------
Closing, the Seller shall preserve, protect and maintain the Florida Business
and the Assets, and shall operate the Florida Business consistent with prior
practice and in the ordinary course of business.  Without limiting the
generality of the foregoing, from the date hereof until the Closing, except for
transactions expressly approved in writing by VOR, Seller shall, with respect to
the Florida Business:

          (a)  Maintain the Assets in good repair, order and condition,
     reasonable wear and tear excepted;

          (b)  Maintain and keep in full force and effect all insurance on
     the Assets or for the benefit of the Florida Business presently
     carried;

          (c)  Preserve intact the organization and reputation of the
     Florida Business and keep available the services of the present
     employees and agents of the Florida Business and preserve the good
     will of payors, physicians, suppliers, customers and others having
     business relationships with the Florida Business;

          (d)  Maintain its books, accounts and records in the usual,
     regular and ordinary manner on a basis consistent with prior years;

          (e)  Not enter into, amend or terminate any employment, bonus,
     severance or retirement contract or arrangement, nor increase any
     salary or other form of


                                -21-


<PAGE>

     compensation payable or to become payable to any employees of the Florida
     Business;

          (f)  Not enter into, amend or terminate, or agree to enter into,
     amend or terminate, any Material Contract;

          (g)  Not extend credit in the provision of services, collection of
     receivables or otherwise, other than in the ordinary and regular course of
     business;

          (h)  Comply with all of the OrthoNet's obligations under all
     agreements;

          (i)  Not sell, lease or otherwise dispose of, or acquire, or
     agree to sell, lease or otherwise dispose of, or acquire, any assets,
     properties, rights or claims related to the Florida Business, except
     in the ordinary course of business; and

          (j)  Not incur or become subject to, nor agree to incur or become
     subject to, any debt, obligation or liability, contingent or otherwise
     which is related to the Florida Business, except current liabilities
     and contractual obligations in the ordinary course of business.

From the date hereof through the Closing, the Seller shall confer on a regular
and frequent basis with one or more designated representatives of VOR regarding
material operational matters and the general status of on-going operations of
the Florida Business.  The Seller shall promptly notify VOR of any material
change in the financial condition, results of operations, properties, business
or prospects of the Florida Business and shall keep VOR fully informed of such
events and permit VOR's representatives to participate in all discussions
relating thereto.

          6.9.  Supplements.  If any representation, warranty or statement of
                -----------                                                  
the Seller, or any schedule delivered to VOR, shall become incorrect, Seller
shall promptly deliver to VOR a supplement in order that said representation,
warranty, statement, or schedule, as so supplemented, shall be true and correct,
provided, however, that no such supplement or amendment shall be considered in
determining the satisfaction of the conditions set forth in Section 7.1 and no
                                                            -----------       
such supplement or amendment shall affect each Warrantor's obligations under
Article IX.
- ---------- 

          6.10.  Covenants.  Anything to the contrary not withstanding, this
                 ---------                                                  
Agreement shall not constitute an assignment of, or an agreement to assign, any
payor contract, provider contract or claims processing contract or any claim or
right or any benefit arising thereunder or resulting therefrom, if an attempted
assignment thereof, without the consent, approval or agreement of a third party
thereto, would constitute a breach thereof or in any way adversely affect the
rights of VOR thereunder.  If such consent, approval or agreement is not
obtained, or if an attempted


                                -22-


<PAGE>


assignment thereof would be ineffective or would affect the rights of
VOR or OrthoNet thereunder so that VOR or OrthoNet would not in fact receive all
such rights, Seller will cooperate with VOR or OrthoNet in any arrangement
designed to provide for the benefits under any such contract, including
enforcement for the benefit of VOR or OrthoNet of any and all rights of Seller
against a third party thereto arising out of the breach or cancellation by such
third party or otherwise.

          6.11.  Restrictions on Transfer.  Seller agrees that he will not
                 ------------------------                                 
directly or indirectly sell, assign, transfer, give, pledge, encumber or
otherwise dispose of any interest in his OrthoNet Shares, prior to the Closing
and will not directly or indirectly (a) sell, assign, transfer, give, pledge,
encumber or otherwise dispose of any economic or other interest in the Vivra
Shares acquired by Seller, or (b) in any way reduce his risk with respect to
such Vivra Shares (including but not limited to, by entering into a "put" with
respect to such Vivra Shares), until an earnings report including at least 30
days of the combined post-Closing operations of Vivra and the Florida Business
has been published (the "Combined Earnings Report").  Legal counsel for the
Seller (the "Seller Representative") shall hold the Vivra Shares delivered
pursuant to Section 2.1(a)(i) in escrow until the Combined Earnings Report has
            -----------------                                                 
been published and thereafter the Seller Representative shall deliver such Vivra
Shares to Seller and upon such delivery, the provisions of this paragraph 6.11
                                                                --------------
shall be no longer effective.  Seller Representative shall be entitled to
deposit such shares with a court of law in the event of a dispute and Vivra and
VOR shall not seek to have Seller Representative disqualified from representing
Seller in such dispute.  Vivra, VOR and Seller shall jointly indemnify, defend
and hold Seller Representative harmless from any and all reasonable expenses and
fees, costs, damages and liabilities arising or incurred by reason of it serving
as Seller Representative.  Vivra agrees to use good faith efforts to publish the
Combined Earnings Report with 45 days of the end of the first complete calendar
month after Closing.


                                   ARTICLE VII

              CONDITIONS PRECEDENT TO OBLIGATIONS OF VIVRA AND VOR

          Each and all of the obligations of Vivra and VOR to consummate the
transactions contemplated by this Agreement are subject to fulfillment prior to
or at the Closing of the following conditions:

          7.1.  Accuracy of Warranties and Performance of Covenants.  The
                ---------------------------------------------------
representations and warranties of the Seller contained herein shall be accurate
in all respects as if made on and as of the Closing Date.  The Seller shall have
performed all of the obligations and complied with each and all of the
covenants, agreements and conditions required to be performed or complied with
on or prior to the Closing, including, without limitation, delivery of the items
set forth in Sections 3.3 and 3.4.
             ------------     --- 


                                 -23-


<PAGE>

          7.2.  No Pending Action.  No action, suit, proceeding or investigation
                -----------------                                               
before any court, administrative agency or other governmental authority shall be
pending or threatened wherein an unfavorable judgment, decree or order would
prevent the carrying out of this Agreement or any of the transactions
contemplated hereby, declare unlawful the transactions contemplated hereby,
cause such transactions to be rescinded, or which might affect the right of VOR
to own, operate or control the Florida Business or the Assets.

          7.3.  Consents.  All consents by third parties that are required for
                --------                                                      
the transfer of the Florida Business or any of the Assets or are required for
the consummation of the transactions contemplated hereby, or that are required
in order to prevent a breach of or a default under or a termination of any
agreement to which OrthoNet is a party or to which any portion of the property
of OrthoNet is subject, shall have been obtained or provided for and shall
remain in effect.  All consents to transfer of all Material Agreements listed as
Schedule 4.15 shall have been obtained, including without limitation appropriate
- -------------                                                                   
consents to transfer of all agreements between OrthoNet and third party payors
or managed care plans.

          7.4.  Condition of Business and Assets.  The Business and the Assets
                --------------------------------                              
shall not have been adversely affected in any way by any act of God, fire,
flood, accident, war, labor disturbance, legislation (proposed or enacted), or
other event or occurrence, whether or not covered by insurance, and there shall
have been no change in the Assets or the Florida Business, its financial
condition, properties or prospects, which would have an material adverse effect
thereon.

          7.5.  Satisfaction of Counsel.  All corporate and other actions and
                -----------------------                                      
proceedings in connection with the transactions contemplated hereby and all
documents incidental thereto, and all other related legal matters, shall be
reasonably satisfactory in form and substance to counsel for VOR, and VOR shall
have received all such resolutions, documents and instruments, or copies
thereof, certified if requested, as its counsel shall have reasonably requested.


                                  ARTICLE VIII

                  CONDITIONS PRECEDENT TO OBLIGATIONS OF SELLER

          Each and all of the obligations of Seller to consummate the
transactions contemplated by this Agreement are subject to fulfillment prior to
or at the Closing of the following conditions:

          8.1.  Accuracy of Warranties and Performance of Covenants.  The
                ---------------------------------------------------      
representations and warranties of VOR contained herein shall be accurate in all
respects as if made on and as of the Closing Date.  VOR shall have performed all
of the obligations and complied with each and all 


                                      -24-

<PAGE>


of the covenants, agreements and conditions required to be performed or complied
with on or prior to the Closing, including, without limitation, delivery of the
items set forth in Sections 3.2 and 3.4.
                   ------------     --- 

          8.2.  No Pending Action.  No action, suit, proceeding or investigation
                -----------------                                               
before any court, administrative agency or other governmental authority shall be
pending or threatened wherein an unfavorable judgment, decree or order would
prevent the carrying out of this Agreement or any of the transactions
contemplated hereby, declare unlawful the transactions contemplated hereby or
cause such transactions to be rescinded.

          8.3.  Satisfaction of Counsel.  All corporate and other actions and
                -----------------------                                      
proceedings in connection with the transactions contemplated hereby and all
documents incidental thereto, and all other related legal matters, shall be
reasonably satisfactory in form and substance to counsel for Seller, and Seller
shall have received all such resolutions, documents and instruments, or copies
thereof, certified if requested, as its counsel shall have reasonably requested.

          8.4.  Registration of Vivra Shares.  The registration statement
                ----------------------------                             
covering the sale of the Vivra Shares to the Seller shall be effective and shall
not be the subject of any stop order or proceeding seeking a stop order and the
Vivra Shares shall have been authorized for listing on the New York Stock
Exchange upon official notice of issuance.  Assuming that (a) Seller is not in
possession of any material nonpublic information with respect to Vivra, and (b)
Seller sells the Vivra Stock pursuant to the restrictions contained in Section
6.11, the Escrow Agreement, and the letter attached as Exhibit B to this
Agreement, then, at the Closing Vivra will have taken all steps necessary to
allow Seller to sell the Vivra Shares on the New York Stock Exchange.


                                   ARTICLE IX

                          SURVIVAL AND INDEMNIFICATION

          9.1.  Survival.  All representations, warranties, covenants and
                --------                                                 
agreements contained in this Agreement or in any document delivered pursuant
hereto shall be deemed to be material and to have been relied upon by the
parties hereto, and shall survive the Closing for a period of three (3) years
from the Closing Date.  Any claim for indemnification that is asserted in
writing within three (3) years from the Closing Date shall survive until
resolved or judicially determined.  The representations and warranties contained
in this Agreement shall not be affected by any investigation, verification or
examination by any party hereto or by anyone on behalf of any such party.


                                      -25-


<PAGE>

          9.2.  Indemnification.
                --------------- 

          (a)  The Seller shall indemnify, hold harmless and defend Vivra and
VOR, from and against any and all loss, diminution in value, damage, cost,
expense (including court costs and attorneys' fees at all levels of trial and
appeal and expenses and costs of investigation), suit, action, claim,
deficiency, liability or obligation related to, caused by or arising from (i)
any misrepresentation, breach of warranty or failure to fulfill any covenant or
agreement of Seller contained herein or in any agreement or other document
delivered pursuant hereto, (ii) any and all claims of third parties made based
upon facts alleged that, if true, would have constituted such a
misrepresentation, breach or failure, and (iii) the operation of the Florida
Business prior to Closing.

          (b)  Vivra and VOR shall indemnify, hold harmless and defend the
Seller, from and against any and all loss, diminution in value, damage, cost,
expense (including court costs and attorneys' fees and expenses and costs of
investigation), suit, action, claim, deficiency, liability or obligation related
to, caused by or arising from (i) any misrepresentation, breach of warranty or
failure to fulfill any covenant or agreement of Vivra or VOR contained herein or
in any agreement or other document delivered pursuant hereto, (ii) any and all
claims of third parties made based upon facts alleged that, if true, would
constitute such a misrepresentation, breach or failure, and (iii) any and all of
the Assumed Obligations.

          (c)  The party seeking indemnification under this Article shall give
written notice to the indemnifying party of the facts and circumstances giving
rise to any claim for indemnification.  All rights contained in this Article are
cumulative and are in addition to all other rights and remedies which are
otherwise available, pursuant to the terms of this Agreement or applicable law.
All indemnification rights shall be deemed to apply in favor of the indemnified
party's officers, directors, representatives, subsidiaries, affiliates,
successors and assigns.

          (d)  If any such cost, loss, damage, expense, liability, claim, or
obligation, as referenced in Section 9.2(a) above occurs or is incurred by VOR
or Vivra, VOR and Vivra shall have the right, at its option and in addition to
any other actions permitted by law, to offset the amount of any such cost, loss,
damage, expense, liability, obligation or claim against amounts due from VOR or
Vivra to Seller under this Agreement, the Employment Agreement or any other
agreement, whether or not such amounts are due from VOR or Vivra by the express
terms of any such agreement or as a result of settlement or judgment with
respect to any such agreement.  VOR's and Vivra's continuing right of set-off
shall not be deemed VOR's and Vivra's exclusive remedy for Seller's breach of
any of the representations, warranties or agreements set forth herein.

          9.3.      Defense Against Asserted Claims.  Any party seeking
                    -------------------------------                    
indemnification (the "Indemnified Party") shall give written notice to the
indemnifying party (the "Indemnifying Party") of the facts and the circumstances
giving rise to any claim (the "Notice").  The Indemnified Party


                                      -26-

<PAGE>


shall not settle or compromise any claim by a third party for which the
Indemnified Party is entitled to indemnification hereunder without the prior
written consent of the Indemnifying Party (which consent shall not be
unreasonably withheld), unless legal action shall have been instituted against
the Indemnified Party and the Indemnifying Party shall not have taken control
of such suit within 15 days after notification thereof as provided herein.  In
connection with any claim giving rise to indemnification hereunder resulting
from or arising out of any claim or legal proceeding by a person other than the
Indemnified Party, the Indemnifying Party shall, upon written notice to the
Indemnified Party, assume the defense of any such claim or legal proceeding
without prejudice to the right of the Indemnifying Party thereafter to contest
its obligation to indemnify the Indemnified Party in respect to the claims
asserted therein.  If the Indemnifying Party assumes the defense of any such
claim or legal proceeding, the Indemnifying Party shall select counsel, the
selection of which counsel shall be subject to the approval of the Indemnified
Party, which approval shall not be unreasonably withheld, to conduct the defense
in such claims and legal proceedings and at its sole cost and expense shall take
all steps necessary in the defense or settlement thereof.  The Indemnifying
Party shall not consent to a settlement of, or the entry of any judgment arising
from, any claim or legal proceeding, without the prior written consent of the
Indemnified Party, unless the Indemnifying Party admits in writing its
liability to hold the Indemnified Party harmless from and against any
losses, damages, expenses and liabilities arising out of such settlement.
The Indemnified Party shall be entitled to participate in the defense
of any such action with its own counsel and at its own expense.  If the
Indemnifying Party does not assume the defense of any such claim or litigation
resulting therefrom in accordance with the terms hereof, the Indemnified Party
may defend such claim or litigation in such a manner as it may deem appropriate,
including settling such claim or litigation after giving notice of the same to
the Indemnifying Party on such terms as the Indemnified Party may deem
appropriate and any action by the Indemnified Party  seeking indemnification
from the Indemnifying Party in accordance with the provisions of this Section,
the Indemnifying Party shall not be entitled to question the manner in which the
Indemnified Party defended such claim or litigation or the amount or nature of
any such settlement.  In the event of a claim by a third party, the Indemnified
Party shall cooperate with the Indemnifying Party in the defense of such action
(including making a personal contact with the third party if deemed beneficial)
and the relevant records of each party shall be made available on a timely
basis.


                                    ARTICLE X

                               GENERAL PROVISIONS

          10.1.  Amendments and Waiver.  No amendment, waiver or consent with
                 ---------------------                                       
respect to any provision of this Agreement shall in any event be effective,
unless the same shall be in writing and signed by the parties hereto and then
such amendment, waiver or consent shall be effective only in the specific
instance and for the specific purpose for which it is given.


                                      -27-


<PAGE>


          10.2.  Notices.  All notices, requests, demands and other
                 -------                                           
communications hereunder shall be in writing and shall be delivered in person or
sent by overnight courier, telegram or telex as follows:

          (a)  If to the Seller:

                    7655 Southwest 52nd Court
                    Miami, Florida 33143
                    Attention:  Joseph Zagorski
                    Telephone:  (305) 665-9840

          with a copy to:

                    Stanley Kuperstein
                    Geiger, Kasdin, Heller,
                      Kuperstein, Chames & Weil, P.A.
                    1428 Brickell Avenue
                    6th Floor
                    Miami, Florida  33131
                    Telephone:  (305) 372-5000

          (b)  If to VOR or Vivra:

                    Vivra Orthopaedics, Inc.
                    1440 Chapin
                    Suite 300
                    Burlingame, CA  94010
                    Attention:  President
                    Telephone:  (415) 373-4600

          with a copy to:

                    Vivra Incorporated
                    400 Primrose
                    Suite 200
                    Burlingame, California  94010
                    Attention:  Secretary
                    Telephone:  (415) 348-8700

Any party may change its address for receiving notice by written notice given to
the others named above.


                             -28-


<PAGE>


          10.3.  Expenses.  Each party to this Agreement shall pay its own costs
                 --------                                                       
and expenses in connection with the transactions contemplated hereby.  If any
action is brought by either party to enforce any provision of this Agreement,
the prevailing party shall be entitled to recover court costs and reasonable
attorneys fees.

          10.4.  Counterparts.  This Agreement may be executed simultaneously in
                 ------------                                                   
two or more counterparts, each of which shall be deemed an original, but all of
which together shall constitute one and the same instrument.

          10.5.  Benefit.  This Agreement shall bind and inure to the benefit of
                 -------                                                        
the parties named herein and their respective successors and assigns.  Neither
party hereto may assign any rights, benefits, duties or obligations under this
Agreement without the prior written consent of the other party, provided,
however, that Vivra may, without the consent of Seller, assign all of its
rights, benefits, duties or obligations under this Agreement to VOR.

          10.6.  Entire Transaction.  This Agreement and the documents referred
                 ------------------                                            
to herein contain the entire understanding among the parties with respect to the
transactions contemplated hereby and supersede all other agreements,
understandings and undertakings among the parties with respect to the subject
matter hereof.

          10.7.  Applicable Law.  This Agreement shall be governed by and
                 --------------                                          
construed in accordance with the internal substantive laws of the State of
Florida, without regard to conflicts of laws principles.

          10.8.  Waiver.  Any party's lack of enforcement of any provision of
                 ------                                                      
this Agreement shall not be construed as a waiver of any such provision and the
nonbreaching party may elect to enforce any such provision in the event of past,
repeated or continuing breach.  No waiver in one or more instances of any of the
provisions of this Agreement shall be deemed a continuing waiver or a waiver of
any other provision.

          10.9.  Other Rules of Construction.  References in this Agreement to
                 ---------------------------                                  
sections, schedules and exhibits are to sections of, and schedules and exhibits
to, this Agreement unless otherwise indicated.  Words in the singular include
the plural and in the plural include the singular.  The word "or" is not
exclusive.  The word "including" shall mean including, without limitation.  The
section and other headings contained in this Agreement are


                                -29-


<PAGE>


for reference purposes only and shall not affect in any way the meaning or
interpretation of this Agreement.

          10.10.  Announcements.  VOR shall be entitled to notify providers,
                  -------------                                             
payors and others of the completion of the transactions contemplated by this
Agreement.  If requested by VOR, Seller shall (a) assist VOR in communicating
with providers or payors, and (b) jointly issue a statement, mailing or press
release with VOR.

          10.11.  Partial Invalidity.  In the event that any provision of this
                  ------------------                                          
Agreement shall be held invalid or unenforceable by any court of competent
jurisdiction, such holding shall not invalidate or render unenforceable any
other provision hereof.

          10.12.  Release.  Seller hereby irrevocably and unconditionally
                  -------                                                
releases and discharges OrthoNet and its officers, directors, successors and
assigns (the "Released Parties") from any and all actions, claims, causes of
action, suits, charges, complaints, contracts, agreements, liabilities or
obligations of any kind whatsoever in law or in equity, which Seller or his
affiliates, heirs, executors, successors and assigns, can, shall or may have
against the Released Parties.  To the extent OrthoNet continues to maintain
insurance after the Closing, the provisions of this Section 10.12 shall not
limit Seller's rights against the relevant insurance company under such
policies.  VOR agrees to give Seller notice prior to VOR giving notice of
termination of any such insurance policies.  Seller shall have the option of
causing OrthoNet to obtain "tail coverage" under any such insurance policy by
timely paying any related premium required for such coverage within the time
period required.

          10.13.  Venue.  VOR and Seller hereby irrevocably submit to the
                  -----                                                  
jurisdiction of any Florida State or federal court sitting in Dade County,
Florida over any action arising out of or relating to this Agreement.

          10.14.  Termination.  This Agreement may be terminated at any time
                  -----------                                               
prior to the Closing:

          (a)  by mutual consent of Seller and VOR;

          (b)  by either Seller or VOR if there has been a material
     misrepresentation or material breach of warranty on the part of the
     other party in the representations and warranties set forth in this
     Agreement; or


                               -30-


<PAGE>


          (c)  by either Seller or VOR if the Closing has not occurred by
     March 1, 1996.

          Termination of this Agreement shall not serve to relieve any party of
any responsibility or obligation for any breach of this Agreement occurring
prior to such termination.


                                -31-


<PAGE>


          IN WITNESS WHEREOF, each of the parties has caused this Agreement to
be executed on its behalf by a duly authorized officer all as of the date first
written above.

                              VIVRA ORTHOPAEDICS INC.


                              By:                                               
                                 -----------------------------------------------
                              Its:                                              
                                  ----------------------------------------------



                                                                 
                              -----------------------------------
                                   JOSEPH ZAGORSKI, M.D.



                              VIVRA INCORPORATED


                              By:                                               
                                 -----------------------------------------------
                              Its:                                              
                                  ----------------------------------------------



                                      -32-

<PAGE>

                             Exhibits and Schedules


Exhibits
- --------

A    Employment Agreement
B    Investor Letter
C    Escrow Agreement

Schedules
- ---------

    4.4    Consents
    4.5    Transactions With Affiliates
    4.6    Financial Statements
    4.8    Interim Change
    4.9    Insurance
    4.10   Licenses and Permits
    4.11   Permitted Exceptions
    4.12   Real Estate
    4.13   Office Furnishings and Equipment
    4.14   Trade Secrets, Proprietary Information and Know-How
    4.15   Material Contracts
    4.16   Employee Matters
    4.17   Benefit Plans
    4.19   Litigation
    4.22   Payment Limitations
    4.23   Physicians
    4.24   Accounts Receivable
    4.26   Dividend History

<PAGE>

                                    EXHIBIT B
                                    ---------

                             FORM OF INVESTOR LETTER
                             -----------------------


                               [Vivra Letterhead]



                                  February __, 1996



Joseph Zagorski, M.D.
7655 Southwest 52nd Court
Miami, Florida  33143

     Re:  Vivra Incorporated ("Vivra")
          Shares of Common Stock
          ----------------------

Dear Gentlemen:

     This letter is written to you to comply with the Federal Securities Law
requirements relating to the exchange of your stock in OrthoNet, Inc. for stock
of Vivra Incorporated (the "Vivra Shares").

     The Vivra Shares are registered on Form S-4 under the Securities Act of
1933, and as such are not considered "restricted securities" within the meaning
of SEC Rule 144.  Nevertheless, there are SEC interpretations which analogize
this transaction to a transaction covered by SEC Rule 145. 

     Specifically, SEC Rule 145(d) requires you for two years after the exchange
of shares (until __________, 1998) to sell any of the securities so exchanged in
accordance with the provisions of (c), (e), (f) and (g) of SEC Rule 144. 
Subparagraph (c) requires Vivra to be current in its public information. 
Subparagraph (e) contains a volume limitation which limits your sales during any
three months period to the greater of 1% of the outstanding common stock or the
average weekly trading volume for the four calendar weeks proceeding the sale. 
As we understand it, the shares acquired by you are less than 1% of the
outstanding stock of Vivra.  Subparagraphs (f) and (g) relate to the manner of
sale.  The sale must be conducted in accordance


<PAGE>


June __, 1995
Page 2


with an unsolicited brokers' transaction.  Any responsible broker will know how
to conduct such a transaction if it is told that the sale has to be made as
an unsolicited brokers' transaction.

     Accordingly, the only relevant requirement in SEC Rule 145(d) relates to
the unsolicited brokers' transaction.  In lieu of legending your stock
certificates, we have written this letter to you to explain the requirements.

     Please return a copy of this letter to us signed with your acknowledgement
and keep a copy of this letter with your stock certificate so that you may show
it to a broker whenever you wish to effect a sale.

                                  Very truly yours

                                  VIVRA INCORPORATED


                                  By:                                           
                                     -------------------------------------------
                                  Its:                                          
                                      ------------------------------------------

I hereby acknowledge the resale restrictions described above and agree to abide
by them until after __________, 1998.



                                                                                
                                  ----------------------------------------------
                                  Joseph Zagorski, M.D.


Dated:  February __, 1996




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