|EXHIBIT 99.1
|------------

Effective as of September 30, 2004

Bank
of America, N.A.,     as Administrative Agent
231 South LaSalle StreetMail
Code: IL1-231-08-03Chicago,IL 60604Attn: Anne M. Zeschke

Bank
One, N.A.,     as Document Agent and Lender221 West 6th Street, Suite 200
Austin,TX 78701Attn: Peter Yuan

|Re:   Request for Waiver of Certain Provisions of the Fifth Amended and Restated Loan          Agreement.
|---------------------------------------------------------------------------------------------------------

|Prime Medical Services, Inc., a Delaware corporation (Company), certain Lenders (the
Lenders), and Bank of America, N.A., as Administrative Agent for those Lenders
(Administrative Agent), have entered into that certain Fifth Amended and Restated Loan Agreement
(as renewed, extended, restated, and amended from time to time, the Loan Agreement) dated as of
July 26, 2002.  Under the terms of certain Guaranties (for each Guarantor defined below, the
Guaranty), certain of the Subsidiaries (as defined in the Loan Agreement) of
Company (collectively, the Guarantors) have guaranteed payment of the Guaranteed
Indebtedness (as defined in the Guaranty).  Unless otherwise specified (i) capitalized terms used herein
shall have the same meanings as set forth in the Loan Agreement and (ii) references to Sections
are to sections of the Loan Agreement.  Company hereby requests a waiver of certain terms and provisions of the
Loan Agreement, and Company, Lenders, and Administrative Agent have agreed to waive certain provisions of the
Loan Agreement, each subject to the terms and conditions contained herein.
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|Section 1.
 Company
Request.
|----------------------------

| | A. | Company has proposed to enter into a merger (the Merger) with HealthTronics Surgical Services,
Inc., a Georgia corporation (HealthTronics), the terms and conditions of which are more fully set
forth in the joint proxy/prospectus of Company and HealthTronics, dated October 6, 2004, distributed to the
shareholders of Company and HealthTronics.  Pursuant to the Merger, Company will merge with and into
HealthTronics, with HealthTronics being the surviving entity (the surviving entity shall be referred to herein as
Borrower), and Borrower will assume all of the rights, titles, obligations, and liabilities of
Company including, without limitation, all Obligations (as defined in the Loan Agreement).  Also pursuant to the
Merger, Company will repay an amount not to exceed $22,000,000 of existing indebtedness of HealthTronics (the
HealthTronics Debt Repayment).
| | -- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| | B. | In connection with the acquisition by Company of Aluminum Body Corporation, a California corporation (the
Aluminum Body Acquisition), Company assumed the obligations of Aluminum Body Corporation under a guaranty of a
letter of credit (the LC Guaranty).  The Lenders have previously waived any Default existing as a result of the
LC Guaranty and agreed that the Debt represented by the LC Guaranty would be excluded from the calculations of
the financial covenants set forth in Section 8.11 of the Loan Agreement (the LC Guaranty Waiver).  As of
September 30, 2004, the LC Guaranty was still outstanding, creating a violation of the prohibition on additional
Debt set forth in Sections 8.02 and 8.03 of the Loan Agreement (the LC Guaranty Violation).
| | -- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | C. | Company has advised Administrative Agent that, as of the period ending September 30, 2004, it is not in
compliance with the Total Net Funded Debt to Adjusted EBITDA Ratio set forth in Section 8.11(a) of the Credit
Agreement (the Leverage Ratio Violation; the Leverage Ratio Violation and the LC Guaranty Violation are,
collectively, the Covenant Violations).
| | -- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | D. | Company wishes to repay up to $15,000,000 of the outstanding  indebtedness  under the Senior  Subordinated
Notes (the Subordinated Debt Repayment).
| | -- | -----------------------------------------------------------------------------------------------------------------------------------------------------

| | E. | Company has requested that Lenders (a) waive any Default or Event of Default resulting from (i) the consummation
of the Merger, (ii) the Covenant Violations, (ii) the HealthTronics Debt Repayment, and (iv) the Subordinated
Debt Repayment, and (b) that Lenders extend the LC Guaranty Waiver through February 10, 2005.
| | -- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|Section 2.     Waiver.
By execution of this Waiver by Required Lenders, and subject to the terms and conditions included herein, the
Lenders hereby make the following waivers:
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | A. | The existence of the Leverage Ratio Violation and the Default or Event of Default created thereby is hereby
waived.
| | -- | -------------------------------------------------------------------------------------------------------------------

| | B. | Until 12:00 noon (Dallas,  Texas time) on February 10, 2005 (Waiver  Termination  Date) the existence of
                  the LC  Guaranty  Violation  and the  Default  or Event of  Default  created  thereby  are hereby
                  waived,  and Lenders agree that the Debt  represented  by the LC Guaranty  shall be excluded from
                  the  calculations  of the  financial  covenants  set  forth in  Section  8.11  until  the  Waiver
                  Termination Date.
| | -- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | C. | Effective upon the consummation of the Merger and the execution and delivery of an Assumption and Modification
Agreement by Borrower in form and substance acceptable to the Administrative Agent and delivery of all documents,
instruments, notes, and other items required thereby (Merger Effectiveness Date), solely with respect to, and
to permit, the Merger, compliance with Sections 8.02, 8.04, and 8.05 of the Loan Agreement is hereby waived.
| | -- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | D. | Compliance  with Sections 7.11 and 8.12 of the Loan Agreement to permit the  HealthTronics  Debt Repayment
                  is hereby waived.
| | -- | ----------------------------------------------------------------------------------------------------------------------------------------------



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| | E. | Compliance with Sections 7.11and 8.12 of the Loan Agreement to permit the Subordinated Debt Repayment is hereby
waived; provided that, after giving effect to the HealthTronics Debt Repayment and the Subordinated Debt
Repayment, (a) no Default or Event of Default exists, (b) Borrower shall have at least $10,000,000 in
availability under the Loan Agreement, and (c) Borrower is capable of satisfying each of the conditions precedent
to a Credit Extension set forth in Section 5.02 of the Loan Agreement.
| | -- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | F. | In connection with the Merger, the Default or Event of Default created by Companys failure to satisfy the
requirement set forth in Section 7.12 of the Loan Agreement that upon the formation or acquisition of each After
Acquired Subsidiary (other than HealthTronics, HT Lithotripsy Management Company, LLC, HT Orthotripsy Management
Company, LLC, HT Prostate Therapy Management Company, LLC, HT Cryosurgery Management Company, LLC, and
HealthTronics Technology Services & Development, LLC), Borrower must deliver articles of incorporation, bylaws,
resolutions and such opinions as required by Administrative Agent, is hereby waived until 12:00 noon (Dallas,
Texas time) on February 10, 2005.
| | -- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | G. | In connection  with the Merger,  the Default or Event of Default  created by Companys  failure to satisfy
                  the requirements set forth in the definition of Permitted  Acquisition under  subparagraphs  (f),
                  (g), (h), and (s) and the proviso at the end of such definition, are hereby waived.
| | -- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|Section 3.     Representations.
The  Company  and each  Guarantor  hereby  represent  and warrant to  Administrative  Agent and the  Lenders  that:
(i) the  representations  and warranties  contained in the Loan Agreement and the other Loan Documents are true and
correct  on and as of the date  hereof as  though  made on and as of such  date,  except  to the  extent  that such
representations  and warranties speak to a specific date or the facts on which such  representations and warranties
are based have been changed by transactions  contemplated  by the Loan Documents;  (ii) after giving effect to this
letter and the waiver  granted  herein, neither  the  Company  nor any of the  Guarantors  is in default in the due
performance  of any covenant or agreement  contained in the Loan  Agreement or any other Loan  Document;  and (iii)
after giving effect to this letter and the waiver granted herein, no Default has occurred and is continuing.
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|Section 4.     Confirmations.
Each of the Company and the Guarantors ratifies and confirms that the Loan Agreement, the Guaranties, the
Borrower Security Agreement, the Guarantor Security Agreements, the Pledge Agreements, and the other Loan
Documents are and remain in full force and effect in accordance with their respective terms, as amended hereby.
In addition, each of the Guarantors acknowledges, agrees, accepts and consents to the terms and provisions hereof
and each other Loan Document as amended hereby.  Except as expressly provided herein, this letter does not
constitute a waiver or modification of any of the terms or provisions set forth in the Loan Agreement or any
other Loan Document and shall not impair any right that Administrative Agent or the Lenders may now or hereafter
have under or in connection with the Loan Agreement or any other Loan Document.
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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|Section 5.     No Impairment.

The waivers hereby granted by Administrative Agent and the Required Lenders (i) does not impair Administrative
Agents or any of the Lenders rights to insist upon strict compliance with the Loan Agreement or the other Loan
Documents (as waived or amended hereby), and (ii) does not extend to any other Loan Document.  The Loan
Documents, as waived hereby, continue to bind and inure to Administrative Agent, the Lenders, Company, the
Guarantors, and their respective successors and permitted assigns.
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|Section 6.     Conditions Precedent.
The  effectiveness  of the waivers set forth in Section 2A and 2B of this letter and waiver agreement is subject to
the conditions  precedent  that the  Administrative  Agent shall have received an officers  certificate of Company
dated as of the date hereof  certifying the following under (A) and (B), in form and substance  satisfactory to the
Administrative Agent:
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | A. | No Default.  No Default other than the Defaults waived in Section 2 hereof shall have occurred and be continuing
under the Loan Agreement.
| | -- | ------------------------------------------------------------------------------------------------------------------------------------------

| | B. | Representations  and Warranties.  All of the  representations  and warranties  contained in Article VII of
                  the Loan Agreement  hereof and in each of the other Loan  Documents  shall be true and correct on
                  and as of the  date  hereof  with  the same  force  and  effect  as if such  representations  and
                  warranties had been made on and as of such date,  except to the extent that such  representations
                  and  warranties  speak  to a  specific  date or the  facts  on  which  such  representations  and
                  warranties are based have been changed by transactions contemplated by the Loan Documents.
| | -- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|The  effectiveness  of the  waivers  set forth in  Section 2C through  2G of this  letter and waiver  agreement  is
subject to the  additional  conditions  precedent  that the  Administrative  Agent shall have  received  all of the
following,  in form and substance reasonably  satisfactory to the Administrative Agent (and items 6(C) through 6(P)
shall be referred to herein as the Assumption Documents):
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | C. | Permitted Acquisition Certificate.  A duly executed and completed Permitted Acquisition Certificate substantially
in the form of Exhibit I to the Loan Agreement with appropriate revisions to give effect to the waivers set forth
herein.
| | -- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | D. | Updating Certificate.  A Certificate signed by the Chief Executive or Chief Financial Officer or Vice
President-Treasurer of Company and the Guarantors setting forth any changes to the Schedules to the Loan
Agreement since the date of execution of the Loan Agreement.
| | -- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | E. | Assumption and Modification Agreement.  Assumption and Modification Agreement dated as of the date of the
consummation of the Merger among Borrower, Agent, and the Lenders party hereto.
| | -- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | F. | Borrower Security Agreement.  A Security Agreement executed by Borrower in favor of Agent, which is an amendment
and restatement of the Borrower Security Agreement.
| | -- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| | G. | Borrower Financing Statement

..  Uniform Commercial Code Financing Statements naming Borrower as debtor for filing with the Secretary of State of
Georgia.
| | -- | -----------------------------------------------------------------------------------------------------------------------------------------------------------

| | H. | In Lieu Financing Statements.  UCC-1 In-Lieu of Continuation Financing Statements naming Borrower as debtor,
continuing the filings originally filed naming Prime as debtor, for filing with the Secretary of State of
Georgia.
| | -- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | I. | Subsidiary Guaranty.  A Continuing and Unconditional Guaranty executed by each of the Subsidiaries of Borrower
listed on Exhibit A  attached hereto (Additional Subsidiary Guarantors)  in favor of Agent.
| | -- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | J. | Subsidiary Security Agreement.  A Security Agreement executed by each Additional Subsidiary Guarantor in favor of
Agent.
| | -- | ------------------------------------------------------------------------------------------------------------------------

| | K. | Officers Certificate of Borrower.  Officers Certificate of Borrower, certifying (a) the articles of
incorporation of Borrower, (b) the bylaws of Borrower, (c) resolutions approving the execution, delivery, and
performance of the Assumption Documents executed by Borrower and the transactions contemplated therein, and (d)
incumbency of officers of Borrower authorized to sign the Assumption Documents.
| | -- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | L. | Officers  Certificate of HT  Lithotripsy.  Officers  Certificate of HT Lithotripsy  Management  Company,
                  LLC (HT  Lithotripsy),  certifying (a) the certificate of formation of HT Lithotripsy,  (b) the
                  limited liability company agreement of HT Lithotripsy,  (c) resolutions  approving the execution,
                  delivery,  and  performance  of the  Assumption  Documents  executed  by HT  Lithotripsy  and the
                  transactions  contemplated  therein, and (d) incumbency of officers of HT Lithotripsy  authorized
                  to sign the Assumption Documents.
| | -- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | M. | Officers Certificate of HT Orthotripsy.  Officers Certificate of HT Orthotripsy Management Company, LLC (HT
Orthotripsy), certifying (a) the certificate of formation of HT Orthotripsy, (b) the limited liability company
agreement of HT Orthotripsy, (c) resolutions approving the execution, delivery, and performance of the Assumption
Documents executed by HT Orthotripsy and the transactions contemplated therein, and (d) incumbency of officers of
HT Orthotripsy authorized to sign the Assumption Documents.
| | -- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | N. | Officers Certificate of HT Prostate.  Officers Certificate of HT Prostate Therapy Management Company, LLC (HT
Prostate), certifying (a) the certificate of formation of HT Prostate, (b) the limited liability company
agreement of HT Prostate, (c) resolutions approving the execution, delivery, and performance of the Assumption
Documents executed by HT Prostate and the transactions contemplated therein, and (d) incumbency of officers of HT
Prostate authorized to sign the Assumption Documents.
| | -- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| | O. | Officers Certificate of HT Cryosurgery.  Officers Certificate of HT Cryosurgery Management Company, LLC (HT
Cryosurgery), certifying (a) the certificate of formation of HT Cryosurgery, (b) the limited liability company
agreement of HT Cryosurgery, (c) resolutions approving the execution, delivery, and performance of the Assumption
Documents executed by HT Cryosurgery and the transactions contemplated therein, and (d) incumbency of officers of
HT Cryosurgery authorized to sign the Assumption Documents.
| | -- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | P. | Officers  Certificate of HT Technology.  Officers  Certificate of  HealthTronics  Technology  Services &
                  Development,  LLC  (HT  Technology),   certifying  (a)  the  certificate  of  formation  of  HT
                  Technology,  (b) the limited  liability  company  agreement  of HT  Technology,  (c)  resolutions
                  approving the execution,  delivery,  and performance of the Assumption  Documents  executed by HT
                  Technology  and the transactions contemplated  therein,  and (d)  incumbency  of officers of HT
                  Technology authorized to sign the Assumption Documents.
| | -- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Q. | Articles  of  Incorporation  of  Borrower.  Articles  of  incorporation  of  Borrower,  as filed  with the
                  Secretary  of State of the State of Georgia in  connection  with the  Merger,  which shall be the
                  Articles of Incorporation of Borrower immediately after giving effect to the Merger.
| | -- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | R. | Certificate of Formation of HT Lithotripsy.  Certificate of formation of HT Lithotripsy, certified by the
Secretary of State of the State of formation of HT Lithotripsy no earlier than the date that is thirty (30) days
prior to the date hereof.
| | -- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | S. | Certificate of Formation of HT Orthotripsy.  Certificate of formation of HT Orthotripsy, certified by the
Secretary of State of the State of formation of HT Orthotripsy no earlier than the date that is thirty (30) days
prior to the date hereof.
| | -- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | T. | Certificate of Formation of HT Prostate.  Certificate of formation of HT Prostate, certified by the Secretary of
State of the State of formation of HT Prostate no earlier than the date that is thirty (30) days prior to the
date hereof.
| | -- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | U. | Certificate of Formation of HT Cryosurgery.  Certificate of formation of HT Cryosurgery, certified by the
Secretary of State of the State of formation of HT Cryosurgery no earlier than the date that is thirty (30) days
prior to the date hereof.
| | -- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | V. | Certificate of Formation of HT Technology.  Certificate of formation of HT Technology, certified by the Secretary
of State of the State of formation of HT Technology no earlier than the date that is thirty (30) days prior to
the date hereof.
| | -- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | W. | Certificates of Existence and Good Standing.   Certificates of existence and good standing for Borrower, HT
Lithotripsy, HT Orthotripsy, HT Prostate, HT Cryosurgery, and HT Technology as certified by the  Secretary of
State of the State of formation of each such entity no earlier than the date that is thirty (30) days prior to
the date hereof.
| | -- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| | X. | UCC Searches.  Uniform  Commercial Code search results for Borrower,  HT Lithotripsy,  HT Orthotripsy,  HT
                  Prostate,  HT Cryosurgery,  and HT Technology as certified by the Secretary of State of the State
                  of  formation  of each such entity no earlier than the date that is thirty (30) days prior to the
                  date hereof.
| | -- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Y. | Financing  Statements of Additional  Subsidiary  Guarantors.  Uniform Commercial Code Financing Statements
                  listing each  Additional  Subsidiary  Guarantor as debtor for filing with the  Secretary of State
                  of the State of each such entities formation.
| | -- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Z. | Certificate regarding Schedules.  A certificate signed by the Chief Executive or Chief Financial Officer or Vice
President-Treasurer of Borrower and the Guarantors setting forth any changes to the Schedules to the Credit
Agreement since the date of execution of the Credit Agreement.
| | -- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | AA. | Opinions.  Opinions of Counsel to Borrower.
| | --- | -------------------------------------------

| | BB. | Fees and Expenses.  Payment of all fees and expenses of counsel for Administrative Agent in connection with the
preparation and negotiation of this Waiver Letter.
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | CC. | Further Assurances.  Such other assurances, certificates, documents, consents or opinions as Agent or the
Required Lenders reasonably may require.
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------

|Section 7.     Counterparts.
This agreement,  when countersigned by Company,  Guarantors,  Administrative Agent, and Required Lenders shall be a
Loan  Document as defined and referred to in the Loan Agreement and the other Loan Documents and may be signed in
any number of counterparts,  each of which shall be deemed an original,  but all of which together shall constitute
one and the same  instrument.  This  agreement  shall be governed by and construed in  accordance  with the laws of
the State of Texas.
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|Section 8.     Entire Agteement.
THIS  AGREEMENT,  THE LOAN AGREEMENT,  THE NOTES AND THE OTHER LOAN DOCUMENTS  EMBODY THE FINAL,  ENTIRE  AGREEMENT
AMONG  THE  PARTIES  HERETO  AND  SUPERSEDE  ANY  AND  ALL  PRIOR  COMMITMENTS,  AGREEMENTS,  REPRESENTATIONS,  AND
UNDERSTANDINGS,  WHETHER  WRITTEN OR ORAL,  RELATING TO THE SUBJECT  MATTER HEREOF AND MAY NOT BE  CONTRADICTED  OR
VARIED BY  EVIDENCE  OF PRIOR,  CONTEMPORANEOUS,  OR  SUBSEQUENT  ORAL  AGREEMENTS  OR  DISCUSSIONS  OF THE PARTIES
HERETO.  THERE ARE NO ORAL AGREEMENTS AMONG THE PARTIES HERETO.
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|[REMAINDER OF PAGE
INTENTIONALLY BLANK.SIGNATURE
PAGES FOLLOW.]
|---------------------------------------------------------------



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|If the foregoing is agreeable to you,
please signify your acceptance of the terms and conditions set forth herein by placing
your signature in the space provided below.
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Very truly yours,PRIME MEDICAL SERVICES, INC.,
   as Company
By: _______________________________ 
       Name:  __________________________ 
       Title:   __________________________
| | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| | GUARANTORS:PROSTATHERAPIES, INC.
LITHOTRIPTORS, INC.
FASTSTART, INC.
NATIONAL LITHOTRIPTORS ASSOCIATION
R.R. LITHO, INC.
OHIO LITHO, INC.
MEDTECH INVESTMENT, INC.
PRIME MEDICAL OPERATING, INC.
PRIME MANAGEMENT, INC.
PRIME LITHOTRIPTER OPERATIONS, INC.
PRIME DIAGNOSTIC SERVICES, INC.
PRIME LITHOTRIPSY SERVICES, INC.
PRIME DIAGNOSTIC CORP. OF FLORIDA
SUN MEDICAL TECHNOLOGIES, INC.
PRIME PRACTICE MANAGEMENT, INC.
PRIME SERVICE CENTER, INC.
         formerly known as  Prime Cardiac Rehabilitation
         Services, Inc.ALABAMA RENAL STONE INSTITUTE, INC.
PRIME KIDNEY STONE TREATMENT, INC.
SUN ACQUISITION, INC.
EXECUTIVE MEDICAL ENTERPRISES, INC.
PRIME RVC, INC.
AK ASSOCIATES, L.L.C.
PRIME MEDICAL MANUFACTURING, LLC
PRIME REFRACTIVE MANAGEMENT, L.L.C.
WINEMILLER COMMUNICATIONS, INC.
ALUMINUM BODY CORPORATION
MEDSTONE INTERNATIONAL, INC.
   each as a Guarantor

By:  _____________________________________              
      Name: ________________________________              
      Title:   ________________________________              PRIME MEDICAL MANAGEMENT, L.P.
  as a Guarantor
By:  PRIME MEDICAL OPERATING, INC.,
       a Delaware corporation, its General Partner
     By:   __________________________________              
             Name:  _____________________________              
             Title: ______________________________
| | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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AGREED AND ACCEPTED as of the
date first stated above.

| | BANK OF AMERICA, N.A., as Administrative Agent
By:       _____________________________       
          Anne M. Zeschke
          Vice President
| | ------------------------------------------------------------------------------------------------------------------------------------------------



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| | BANK OF AMERICA, N.A., as a Lender
By:       _____________________________
          Daniel H. Penkar
          Senior Vice President
| | -------------------------------------------------------------------------------------------------------------------------------------

|Signature Page to Waiver Letter
|-------------------------------



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| | BANK ONE, NA, with its main office in Chicago, Illinoisas a Lender
By:   __________________________________                    
       Name: _____________________________                                           
       Title:   _____________________________
| | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|Signature Page to Waiver Letter
|-------------------------------



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| | LASALLE BANK, NATIONAL ASSOCIATION,as a Lender
By:   __________________________________                    
       Name: _____________________________                                           
       Title:   _____________________________
| | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|Signature Page to Waiver Letter
|-------------------------------



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| | COMERICA BANK,as a Lender
By:   __________________________________                    
       Name: _____________________________                                           
       Title:   _____________________________
| | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|Signature Page to Waiver Letter
|-------------------------------