Document:

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                                                                   Exhibit 10.55

                              DJ ORTHOPEDICS, INC.
                                2985 Scott Street
                                 Vista, CA 92083

                                          November 20, 2001

Cyril Talbot III
2511 Lozana Road
Del Mar, CA 92014

                           NOTES AND PLEDGE AGREEMENTS

Dear Cy:

                  Reference is hereby made to the following: (i) a Promissory
Note originally issued by you to DonJoy, L.L.C. (the "COMPANY") on June 30,
1999, and amended and restated on June 28, 2000, in the original principal
amount, as so amended and restated, of $210,541.11, (the "JUNE 1999 NOTE"); (ii)
a Promissory Note issued by you to the Company on June 28, 2000, in the original
principal amount of $17,728.91 (the "JUNE 2000 Note"); (iii) a Promissory Note
issued by you to the Company on July 7, 2000, in the original principal amount
of $24,924.67 (the "JULY 2000 NOTE"); (iv) a Promissory Note originally issued
by you to the Company on June 11, 2001, in the original principal amount of
$30,121.74 (the "JUNE 2001 NOTE" and collectively with the June 1999 Note, the
June 2000 Note and the July 2000 Note, the "NOTES"); (v) a Third Amended and
Restated Pledge Agreement between you and the Company, dated as of June 11, 2001
(the "PLEDGE AGREEMENT") and (vi) the Agreement and Plan of Merger (the "MERGER
AGREEMENT"), dated as of October 26, 2001, among dj Orthopedics, Inc. (the
"PARENT"), the Company, and DJ Acquisition Corporation, a wholly-owned
subsidiary of the Parent (the "MERGER SUB").

                  You hereby acknowledge that pursuant to Merger Agreement (i)
the Merger Sub was merged with and into the Company and the previous holders of
units of the Company received shares of the Parent Common Stock (as defined in
the Merger Agreement) in exchange for their units of the Company and (ii) the
Company assigned all of its right, title and interest in and to, and the Parent
assumed all of the Company's obligations under the Notes and the Pledge
Agreement. Accordingly, you hereby acknowledge that: (i) all references to the
Payee in the Notes shall refer to the Parent; (ii) all references to the Company
in the Pledge Agreement shall refer to the Parent; and (iii) all references to
"Pledged Securities" in the Pledge Agreement shall refer to the Parent Common
Stock that was issued to you pursuant to the Merger Agreement.

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                  Please acknowledge your agreement with the foregoing by
signing a copy of this letter where indicated.

                                        Very truly yours,

                                        DJ ORTHOPEDICS, INC.

                                        By: /s/ Leslie H. Cross
                                           -------------------------------------
                                           Leslie H. Cross
                                           President and Chief Executive Officer

ACKNOWLEDGED AS OF
NOVEMBER 20, 2001:

/s/ Cyril Talbot III
--------------------
Cyril Talbot III<Page>

                                                                   Exhibit 10.56

                              DJ ORTHOPEDICS, INC.
                                2985 Scott Street
                                 Vista, CA 92083

                                          November 20, 2001

Michael R. McBrayer
4308 Horizon Drive
Carlsbad, CA92008

                           NOTES AND PLEDGE AGREEMENTS

Dear Michael:

                  Reference is hereby made to the following: (i) a Promissory
Note originally issued by you to DonJoy, L.L.C. (the "COMPANY") on June 30,
1999, and amended and restated on June 28, 2000, in the original principal
amount, as so amended and restated, of $210,541.11, (the "JUNE 1999 NOTE"); (ii)
a Promissory Note issued by you to the Company on June 28, 2000, in the original
principal amount of $17,728.91 (the "JUNE 2000 Note"); (iii) a Promissory Note
issued by you to the Company on July 7, 2000, in the original principal amount
of $24,924.67 (the "JULY 2000 NOTE"); (iv) a Promissory Note originally issued
by you to the Company on June 11, 2001, in the original principal amount of
$30,121.74 (the "JUNE 2001 NOTE" and collectively with the June 1999 Note, the
June 2000 Note and the July 2000 Note, the "NOTES"); (v) a Third Amended and
Restated Pledge Agreement between you and the Company, dated as of June 11, 2001
(the "PLEDGE AGREEMENT") and (vi) the Agreement and Plan of Merger (the "MERGER
AGREEMENT"), dated as of October 26, 2001, among dj Orthopedics, Inc. (the
"PARENT"), the Company, and DJ Acquisition Corporation, a wholly-owned
subsidiary of the Parent (the "MERGER SUB").

                  You hereby acknowledge that pursuant to Merger Agreement (i)
the Merger Sub was merged with and into the Company and the previous holders of
units of the Company received shares of the Parent Common Stock (as defined in
the Merger Agreement) in exchange for their units of the Company and (ii) the
Company assigned all of its right, title and interest in and to, and the Parent
assumed all of the Company's obligations under the Notes and the Pledge
Agreement. Accordingly, you hereby acknowledge that: (i) all references to the
Payee in the Notes shall refer to the Parent; (ii) all references to the Company
in the Pledge Agreement shall refer to the Parent; and (iii) all references to
"Pledged Securities" in the Pledge Agreement shall refer to the Parent Common
Stock that was issued to you pursuant to the Merger Agreement.

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                  Please acknowledge your agreement with the foregoing by
signing a copy of this letter where indicated.

                                        Very truly yours,

                                        DJ ORTHOPEDICS, INC.

                                        By: /s/ Leslie H. Cross
                                           -------------------------------------
                                           Leslie H. Cross
                                           President and Chief Executive Officer

ACKNOWLEDGED AS OF
NOVEMBER 20, 2001:

/s/ Michael R. McBrayer
-----------------------
Michael R. McBrayer<Page>

                                                                   Exhibit 10.57

                                               ASSIGNMENT AND ASSUMPTION
                                     AGREEMENT dated as of November 20, 2001
                                     (this "AGREEMENT"), between DONJOY, L.L.C.,
                                     a Delaware limited liability company (the
                                     "COMPANY"), and DJ ORTHOPEDICS, INC., a
                                     Delaware corporation (the "Parent").

                  Reference is made to the Agreement and Plan of Merger, dated
as of October 26, 2001 (the "MERGER AGREEMENT"), among the Company, the Parent,
and DJ Acquisition Corporation, a Delaware corporation and a wholly owned
subsidiary of the Parent (the "MERGER SUBSIDIARY" and, together with the Company
and the Parent, the "PARTIES").

                  Pursuant to the terms of the Merger Agreement, the Parties
have agreed that the Merger Subsidiary shall merge with and into the Company,
with the result being that the Company shall be the surviving entity.

                  ACCORDINGLY, in consideration of the mutual covenants and
obligations set forth herein and for other good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, the parties hereby
agree as follows:

         SECTION 1. DEFINED TERMS.

                  Capitalized terms used and not otherwise defined herein have
the respective meanings ascribed thereto in the Merger Agreement.

         SECTION 2. ASSIGNMENT.

                  On and subject to the terms and conditions of the Merger
Agreement, the Company hereby transfers, conveys and assigns to the Parent all
of its right, title and interest in, to and under the Assigned Contracts.

         SECTION 3. ASSUMPTION.

                  On and subject to the terms and conditions of the Merger
Agreement, the Parent hereby assumes and shall perform, discharge and otherwise
be responsible for all obligations, responsibilities or liabilities of the
Company under the Assigned Contracts and those items referred to in SECTION
2.1(C) of the Merger Agreement.

         SECTION 4. GOVERNING LAW.

                  This agreement will be governed by and construed in accordance
with the domestic laws of the State of Delaware, without giving effect to any
choice of law or conflicting provision or rule (whether of the State of Delaware
or any other jurisdiction) that would cause the laws of any jurisdiction other
than the State of Delaware to be applied.

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         SECTION 5. MERGER AGREEMENT.

                  The Merger Agreement is hereby incorporated herein by
reference and shall control in the event of any conflict with this Agreement.
Nothing contained in this Agreement is intended to provide any rights to, or
impose any obligations on, the Company or the Parent beyond those rights and
obligations expressly provided to, or imposed on, the Company or the Parent in
the Merger Agreement.

                                    * * * * *

                                       2
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                  IN WITNESS WHEREOF, each of the undersigned has caused this
Assignment and Assumption Agreement to be executed on its behalf as of the date
first written above.

                                      DONJOY, L.L.C.

                                      By:  /s/ Leslie H. Cross
                                           Leslie H. Cross
                                           President and Chief Executive Officer

                                      DJ ORTHOPEDICS, INC.

                                      By:  /s/ Cyril Talbot III
                                           Cyril Talbot III
                                           Senior Vice President - Finance,
                                           Chief Financial Officer & Secretary

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