Exhibit 2

                                                       CONFIDENTIAL

                          September 25, 1997


Sulzer Medica
400 Technology Drive
Angleton, Texas 77515

Attention: Robert Cohen
           Group Vice President of Business Development


                        CONFIDENTIALITY AGREEMENT

Ladies and Gentlemen:

     In connection with your possible interest in a business transaction 
involving Spine-Tech, Inc. (the "Company"), the Company and you may provide 
each other with certain information which is either non-public, confidential 
or proprietary in nature. For purposes of this Agreement, the party 
disclosing such information in any given instance is sometimes referred to as 
the "Disclosing Party" and the Party receiving such information is 
sometimes referred to as the "Recipient Party." All information furnished or 
to be furnished to the Recipient party by the Disclosing Party, or by its 
representatives with respect to the Disclosing Party (including without 
limitation any information in the Disclosing Party's possession that has been 
supplied to the Disclosing Party by customers or other third parties and that 
is furnished to the Recipient Party, if any), in whole or in part, together 
with analyses, compilations, studies or other documents prepared by the 
Recipient Party, any of the Recipient Party's affiliates, the Recipient 
Party's partners, directors, officers, employees, agents or advisers, or 
those of any of the Recipient Party's affiliates, which contain or otherwise 
reflect such information, is hereinafter referred to as "Information". In 
addition, the fact that such information will be, or has been, delivered to 
the Recipient Party itself constitutes Information for purposes of this 
Agreement. If the Company and you shall hereafter determine to enter into 
discussions or negotiations concerning a possible transaction involving the 
Company and



you or an affiliate of yours, the existence and nature of such discussions 
and negotiations will also constitute Information for purposes of this 
Agreement. In consideration of the foregoing and good and valuable other 
consideration, the receipt of which is hereby acknowledged, you and the 
Company agree as follows:

     1. All Information will be kept confidential and will not, without the 
prior written consent of the Disclosing Party, be disclosed by the Recipient 
Party, any of the Recipient Party's affiliates, the Recipient Party's 
partners, directors, officers, employees, agents or advisers, or those of any 
of the Recipient Party's affiliates, in any manner whatsoever, in whole or in 
part, and will not be used by any of the foregoing other than in connection 
with considering your possible interest in a transaction with the Company. 
Moreover, the Recipient Party agrees to transmit Information only to the 
Recipient Party's partners, directors, officers, employees, agents and 
advisers, or those of the Recipient Party's affiliates who need to know 
Information for the purpose of considering the Recipient Party's possible 
interest in a transaction with the Disclosing Party and who are informed by 
the Recipient Party of the confidential nature of Information, and who agree 
to be bound by this Agreement. The Recipient Party will be responsible for 
any breach of any provision of this Agreement by the Recipient Party's 
affiliates, partners, directors, officers, employees, agents and advisers and 
those of the Recipient Party's affiliates.

     2. In no event shall Information be used by the Recipient Party, the 
Recipient Party's affiliates, or any of the Recipient Party's partners, 
directors, officers, employees, agents or advisers, or those of the Recipient 
Party's affiliates, in connection with purchases or sales of, or trading in, 
any securities of the Disclosing Party, including but not limited to direct 
or indirect purchases or sales, offers or agreements to purchase or sell, or 
rights or options to purchase or sell any such securities. You hereby 
acknowledge that neither you nor any of your subsidiaries own any capital 
stock of the Company.

     3. You agree that, except as otherwise provided in the last sentence of 
this paragraph 3, for a period of eighteen months from the date hereof, you 
and your affiliates and associates (as such terms are defined in Rule 12b-2 
under the Securities Exchange Act of 1934, as amended (the "Exchange Act')) 
will not (and you and they will not assist or encourage others to), directly 
or indirectly, without the prior written consent of the Company.

     (a) acquire or agree (except with the Company) or publicly offer, seek 
         or propose to acquire, or cause to be acquired (by merger, tender 
         offer, purchase, statutory share exchange or otherwise), ownership 
         (including, but not limited to, beneficial ownership as defined in 
         Rule 13d-3 under the Exchange Act) of any of the Company's assets 
         (other than acquisitions of inventory in the ordinary course of 
         business) or businesses or any voting stock that would result in 
         beneficial ownership by you and your affiliates and associates of 
         voting stock of the Company in excess of 1% of the total voting 
         power of the outstanding shares of stock of the Company in the

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         aggregate, for which purpose any rights or options (including 
         without limitation convertible securities) to acquire such ownership 
         of voting stock shall constitute beneficial ownership of such voting 
         stock, regardless of when they are exercisable, provided that 
         nothing herein stated shall limit your right to make a proposal to 
         the Board of Directors of the Company on a confidential basis as 
         long as such proposal is not made public by you (or any of your 
         affiliates or associates or any person acting in concert with you or 
         any of your affiliates or associates) by press release or other 
         public communication or filing unless you are legally compelled to 
         make such disclosure; or

     (b) seek or propose to influence or control the management or policies 
         of the Company or to obtain representation on the Company's Board of 
         Directors, or solicit, or participate in the solicitation of, 
         proxies or consents with respect to any securities of the Company in 
         connection with the election of directors or any other matter or 
         disclose to the public by press release or other communication its 
         or their position concerning the election of directors or any other 
         matter to be considered by the shareholders of the Company, or 
         request permission to do any of the foregoing; or

     (c) make any other public announcement with respect to any of the 
         foregoing; or

     (d) publicly request the Company, direct or indirectly, to waive or 
         amend any provision of this paragraph 3.

Notwithstanding anything stated above in this paragraph 3, this paragraph 3 
(except this sentence) shall be of no force or effect following (i) the 
publication by the Company or a proposing person, in a newspaper or 
periodical of general circulation or by press release, of an offer or 
proposal for, or the execution of an agreement in principle or definitive 
acquisition agreement for, a business transaction involving the sale of the 
Company, any merger or other business combination involving the Company or 
the sale of any substantial portion of the stock or assets of the Company 
(other than sales of inventory in the ordinary course of business) sufficient 
to substantially preclude the benefits that would otherwise be obtained by 
you from a transaction with you (other than the publication by you or any of 
your affiliates or associates or any person acting in concert with you or any 
of your affiliates or associates of such an offer or proposal) or (ii) the 
making (including a public announcement of an intention to make) by any 
person (other than the Company or you or any of your affiliates or associates 
or any person acting in concert with you or any of your affiliates or 
associates) of any tender offer or exchange offer to purchase outstanding 
shares of the Company's voting stock representing 10% or more of the total 
voting power of the Company's voting stock.


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     4.  All information, and all copies thereof, except for that portion of 
Information which consists of analyses, compilations, studies or other 
documents prepared by the Recipient Party, the Recipient Party's partners, 
directors, officers, employees, agents or advisors, or those of the Recipient 
Party's affiliates, will be returned to the Disclosing Party without 
retaining any copies thereof immediately upon request of the Disclosing 
Party. That portion of Information which consists of analyses, compilations, 
studies or other documents prepared by the Recipient Party's affiliates, the 
Recipient Party's partners, directors, officers, employees, agents or 
advisers, or those of the Recipient Party's affiliates, will be held by the 
Recipient Party or them and kept confidential and subject to the terms of 
this Agreement or, at the request of the Disclosing Party, destroyed. Such 
destruction will be confirmed in writing upon request of the Disclosing 
Party. Notwithstanding any contrary foregoing provisions, the Recipient Party 
may, if it so elects, retain one copy only of Information in a secure 
location with appropriate restricted access for evidentiary purposes.

     5.  Nothing stated herein shall preclude the Recipient Party, the 
Recipient Party's affiliates, the Recipient Party's partners, directors, 
officers, employees, agents or advisers, or those of the Recipient Party's 
affiliates, from disclosing Information that the Recipient Party is legally 
compelled to disclose, provided that the procedures referred to in this 
paragraph 5 are satisfied. In the event that the Recipient Party or any 
persons to whom the Recipient Party transmits Information pursuant to this 
Agreement become legally compelled to disclose any Information, the Recipient 
Party will provide the Disclosing Party with prompt notice thereof and 
cooperate with the Disclosing Party so that the Disclosing Party may seek a 
protective order or other appropriate remedy and/or waive compliance with the 
provisions of this Agreement. In the event that such protective order or 
other remedy is not obtained, or that the Disclosing Party waives compliance 
with the provisions of this Agreement, the Recipient Party or such person 
will furnish only that portion of such Information that the Recipient Party 
or such person is advised by written opinion of counsel, reasonably 
satisfactory to the Disclosing Party, is legally required and the Recipient 
Party or such person will exercise the Recipient Party's or such person's 
best efforts to obtain a protective order or other reasonable assurance that 
confidential treatment will be accorded such Information.

     6.  Although each party hereto understands that the Disclosing Party has 
included, or may include, certain data in the Information which it believes 
to be relevant for the purpose of the Recipient Party's evaluation, neither 
such party nor its advisers makes any representation or warranty as to the 
accuracy or completeness of Information or of any other written or oral 
communication transmitted or made available to the Recipient Party, and each 
such party expressly disclaims any and all liability based on such 
information or communications or on omissions therefrom.

     7.  The term "Information" does not include information that (a) becomes 
generally available to the public other than as a result of a disclosure by 
the Recipient Party or anyone to whom the Recipient Party transmits 
Information, (b) was known or available to the

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Recipient Party or in the Recipient Party's possession on a non-confidential 
basis prior to its disclosure to the Recipient Party by the Disclosing Party, 
(c) is developed by the Recipient Party following disclosure by the 
Disclosing Party, but independently and without reference to such disclosure, 
or (d) becomes available to the Recipient Party on a non-confidential basis 
from a source other than the Disclosing Party who is not bound by a 
confidentiality agreement or other obligation of secrecy with respect to such 
information.

     8.  It is understood and agreed that nothing stated herein shall entitle 
either party to receive any Information from the other party other than 
Information that the other party determines to provide or obligate either 
party in any manner to enter into discussions or negotiations with the other 
party or accept any proposals from the other party or to continue any 
discussions or negotiations with the other party if it does enter into any 
discussions or negotiations with the other party or to enter into any 
definitive agreements with the other party and that neither party shall be 
obligated to the other party in any respect except to the extent expressly 
set forth in any definitive written agreement, if any, hereafter entered into 
by the Company and you. Each party acknowledges that it has been advised by 
the other party that the other party has not made any determination to enter 
into a business transaction with such party or anyone else of the nature of 
the business transaction in which you have expressed an interest.

     9.  It is further understood and agreed that no failure or delay by 
either party in exercising any right, power or privilege under this Agreement 
shall operate as a waiver thereof nor shall any single or partial exercise 
thereof preclude any other or further exercise of any right, power or 
privilege hereunder.

     10. Each party recognizes that irreparable injury may result to the 
non-breaching party and its business and property if the other party breaches 
any provision of this Agreement and that money damages would not be a 
sufficient remedy for any such breach. Each party therefore agrees that if it 
should engage, or cause or permit any other person or entity to engage, in 
any act in violation of any provision hereof, the other party shall be 
entitled, in addition to such other remedies, damages and relief as may be 
available under applicable law, to an injunction prohibiting the breaching 
party from engaging in any such act or specifically enforcing this Agreement, 
as the case may be.

     11. This Agreement shall be governed by and construed in accordance with 
the laws of the State of Minnesota, without giving effect to the principles 
of conflict of laws thereof.

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     If you are in agreement with the foregoing, please sign below and return 
one or more fully executed copies of this Agreement to the undersigned.

                                       Very truly yours,



                                       SPINE-TECH, INC.

                                       By  /s/ Thomas P. Schnettler
                                          ---------------------------------
                                          Its  Managing Director
                                              -----------------------------
                                              as agent for the Company.


Accepted and agreed as of
the date first above written.

SULZER MEDICA



By /s/ Robert Cohen
  -----------------------------
  Its  Group Vice President
     --------------------------










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