MEDICAL DYNAMICS INC
8-K, 1998-08-06
PHOTOGRAPHIC EQUIPMENT & SUPPLIES
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                       SECURITIES AND EXCHANGE COMMISSION
                                Washington, D.C.

                                    FORM 8-K

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

                          Date of Report: April 9, 1998


                             MEDICAL DYNAMICS, INC.
                             ----------------------
             (Exact name of Registrant as specified in its charter)

                         Commission file number: 0-8632

          Colorado                                              84-0631765
          --------                                              ----------
(State orother jurisdiction of                                (IRS Employer
incorporation or organization)                            Identification Number)


         99 Inverness Drive East
           Englewood, Colorado                                    80112
           -------------------                                    -----
(Address of principal executive offices)                        (Zip Code)


               Registrant's telephone number, including area code:
                                 (303) 790-2990

                                 not applicable
                                 --------------
                  former name or former address, if applicable

<PAGE>



Item 5.  Other Events.

     On July 31, 1998, MEDY sold convertible  debentures in the aggregate amount
of $1,100,000 to Tail Wind Fund,  Ltd.  ("Tail Wind")  pursuant to Regulation D,
and  (assuming  certain  conditions  are met),  Tail Wind  committed to purchase
additional  convertible  debentures  aggregating  $400,000 in December 1998. The
following provides the information required by Item 701 of Regulation S-B.

(A)  The title of the securities sold is: 8% convertible debenture,  convertible
     into shares of MEDY common  stock at the rate equal to the Market Price (as
     defined in the debenture) but not greater than the "Ceiling Price" (a price
     equal to 120% of the closing bid prices for the 20 days  preceding the date
     the contemplated registration statement becomes effective). Interest on the
     principal amount is payable semi-annually,  and the principal amount of the
     debenture  is payable in full on July 31,  2003.  MEDY is  entitled to make
     payment  of  interest  in shares of its common  stock  valued at the Market
     Price (as defined).

(B)  Rochon Capital Ltd., San Rafael,  California,  acted as placement agent for
     the transaction.  The investor,  Tail Wind, is a sophisticated,  accredited
     investor,  an existing  shareholder and debenture  holder of MEDY.

(C)  The total offering price was $1,500,000,  including $1,100,000 purchased on
     July 31,  1998 and an  additional  $400,000  expected  to be  purchased  in
     December  1998. A commission  of 6% was paid to the  placement  agent,  and
     legal fees and  expenses of $12,500 were  reimbursed  to the  purchaser.  A
     commission of 6% will be paid on the December 1998 investment when made.

(D)  The  transaction was exempt from  registration  pursuant to Section 4(2) of
     the  Securities  Act of 1933,  as  amended.  The  facts  establishing  such
     exemption include (without limitation) the following: the offer and sale of
     securities were made to a single,  existing security holder of MEDY with no
     public   advertising   or  general   solicitation.   The   purchaser  is  a
     sophisticated  entity which negotiated the investment at arms' length after
     performing  such due diligence into MEDY as the purchaser  determined to be
     necessary,  and after  consultation  with its professional  advisors as the
     purchaser deemed to be necessary..

(E)  The debenture is convertible  into shares of MEDY common stock as described
     in paragraph (A),  above. In addition,  MEDY issued a five-year  warrant to
     the purchaser to acquire  110,000 shares of MEDY common stock,  exercisable
     at $2.58 per share, and an additional warrant to acquire 40,000 shares will
     be  issued in  December  1998 in  connection  with the  $400,000  purchase.
     One-third of the principal  amount of the debenture is convertible from and
     after November 29, 1998, an additional one-third from and after January 27,
     1999; and the entire debenture from and after March 29, 1999.

(F)  MEDY undertook to file a  registration  on Form S-3 and (subject to certain
     conditions) obtain its effectiveness by November 30, 1998. The registration
     statement will allow resale of the MEDY shares  underlying the  convertible
     
    


<PAGE>

     debentures and the warrant,  but only after issuance through  conversion or
     exercise,  if the investor  actually  elects to convert the  debentures  or
     exercise the warrants.  If the  registration  statement is not effective as
     required under the Registration Rights Agreement, MEDY will be obligated to
     pay  liquidated  damages  to the  investor  equal  to 2% of  the  aggregate
     principal  amount  of the  debentures  for  each  month  during  which  the
     Registration Statement is not effective.

Item 7.  Financial Statements and Exhibits

     (A)  and (B) Financial Statements

          None

     (C)  Exhibits

     (1)  Purchase  Agreement between Medical  Dynamics,  Inc. and The Tail Wind
          Fund, Ltd.

     (2)  Form of Convertible Debenture

     (3)  Registration  Rights Agreement between Medical Dynamics,  Inc. and The
          Tail Wind Fund, Ltd.

     (4)  Common Stock Purchase Warrant issued to The Tail Wind Fund, Ltd.


<PAGE>



                                   SIGNATURES

     Pursuant to the  requirements  of the  Securities  Exchange Act of 1934, as
amended,  the  registrant has duly caused this report to be signed on its behalf
by the undersigned hereunto duly authorized.

                                                MEDICAL DYNAMICS, INC.



August 6, 1998                                  By: /s/ Van A Horsley
                                                   -----------------------------
                                                   Van A. Horsley, President




                               PURCHASE AGREEMENT
                               ------------------

     THIS PURCHASE  AGREEMENT  ("Agreement") is made as of the 31st day of July,
1998  by and  between  Medical  Dynamics,  Inc.,  a  Colorado  corporation  (the
"Company"),  and The Tail Wind Fund,  Ltd.,  a British  Virgin  Islands  limited
liability company (the "Investor").


     In  consideration of the mutual promises made herein and for other good and
valuable  consideration,   the  receipt  and  sufficiency  of  which  is  hereby
acknowledged, the parties hereto agree as follows:

     1.  Definitions.  The following  terms, as used herein,  have the following
meanings:

          1.1 "Affiliate"  means,  with respect to any person,  any other person
which  directly or indirectly  controls,  is  controlled  by, or is under common
control with, such person.

          1.2  "Agreements"  means this  Agreement and the  Registration  Rights
Agreement.

          1.3 "Closing" means the consummation of the transactions  contemplated
by this Agreement, which shall occur as provided herein.

          1.4 "Common Stock" means the Common Stock,  par value $.001 per share,
of the Company.

          1.5 "Control" means the possession , direct or indirect,  of the power
to direct or cause the  direction  of the  management  and policies of a person,
whether through the ownership of voting securities, by contract or otherwise.

          1.6 "Debenture" means the Convertible Debenture issued to the Investor
in the form attached hereto as Exhibit A.

          1.7 "Material  Adverse Effect" means a material  adverse effect on the
(i) condition (financial or otherwise),  business, assets, results of operations
or prospects of the Company and its subsidiaries, taken as a whole; (ii) ability
of the Company to perform  any of its  material  obligations  under the terms of
this Agreement;  or (iii) rights and remedies of the Investor under the terms of
this Agreement.

          1.8 "Person" means an  individual,  corporation,  partnership,  trust,
business  trust,   association,   joint  stock  company,  joint  venture,  pool,
syndicate,  sole  proprietorship,   unincorporated  organization,   governmental
authority or any other form of entity not specifically listed herein.

          1.9  "Registration  Rights  Agreement" means the  Registration  Rights
Agreement  relating to the Common Stock  issuable  pursuant to the conversion of
the Debentures and the exercise of the Warrants,  in the form attached hereto as
Exhibit B, to be entered into as of the date hereof.

<PAGE>


          1.10 "SEC" means the Securities and Exchange Commission.

          1.11 "SEC Filings" has the meaning set forth in Section 4.5.

          1.12 "Securities" means the Debentures, the Common Stock issuable upon
the  conversion  of, or payable  as accrued  interest  on, the  Debentures,  the
Warrants and the Common Stock issuable upon the exercise of Warrants.

          1.13 "1933 Act" means the Securities Act of 1933, as amended,  and the
rules and regulations promulgated thereunder.

          1.14 "1934 Act" means the Securities Exchange Act of 1934, as amended,
and the rules and regulations promulgated thereunder.

          1.15 "Warrants" means (a) the "First Investment Warrant," which is the
Warrant  issued to the  Investor on the First  Closing Date to purchase up to an
aggregate  of  110,000  shares  of Common  Stock at the  exercise  price  stated
therein,  the form of which is attached  hereto as Exhibit C and (b) the "Second
Investment  Warrant,"  which is the Warrant to be issued to the  Investor on the
Second  Closing Date to purchase up to an  aggregate of 40,000  shares of Common
Stock at the exercise price stated therein, the form of which is attached hereto
as Exhibit D.

     2. Purchase and Sale of Debenture and Issuance of Warrant.

          2.1 First  Investment.  Subject  to the terms and  conditions  of this
Agreement,  and in  reliance on the  representations  and  warranties  contained
herein, the Investor hereby purchases and the Company hereby sells and issues to
the Investor (a) the  Debenture at an aggregate  purchase  price of  $1,100,000,
issued and delivered  concurrently  herewith in eleven equal  Debenture forms of
$100,000  face  amount  each and (b) the First  Investment  Warrant  issued  and
delivered concurrently herewith (the "First Investment").

          2.2 Second  Investment.  Subject to the terms and  conditions  of this
Agreement,  and in  reliance on the  representations  and  warranties  contained
herein,  upon the  satisfaction  of the conditions set forth below, on or before
December 31, 1998,  the Investor  shall  purchase and the Company shall sell and
issue to the Investor (a) Debentures at an aggregate purchase price of $400,000,
which shall be issued and delivered  against receipt of funds as contemplated by
Section 3, below, in four equal Debenture forms of $100,000 face amount each and
(b) the Second Investment Warrant (the "Second  Investment").  The obligation of
the Investor to make the Second  Investment shall be subject to the satisfaction
of the following conditions:

                                        2

<PAGE>


               (a) The  average  closing  bid price of the Common  Stock for the
month of November 1998 shall be $2.10 or above;



               (b) The effective date of the registration statement contemplated
by the Registration Rights Agreement is within 120 days of the date hereof;

               (c) The registration statement on Form S-3 (Registration No. 333-
42631) is not subject to any  suspension  of  effectiveness  and has not been so
subject for a period in excess of ten (10) days during the period  commencing on
the date hereof and ending on November 30, 1998;

               (d) The  representations  and  warranties of the Company shall be
true and correct as of the date of the Second Investment;

               (e) The trading in the Common Stock shall not have been suspended
by the SEC or the Nasdaq Stock Market,  and the Common Stock shall not have been
delisted from the Nasdaq Stock Market;

               (f) The Company  shall have  delivered to the Investor an opinion
of Company's  counsel in form and substance  similar to the opinion delivered in
connection with the First Investment.

          2.3 Closing Dates and Closings.  The date and time of the issuance and
sale of the  Debentures  and Warrants  pursuant to this  Agreement (the "Closing
Dates") shall be (i) in the case of the First  Investment,  the date hereof (the
"First Closing Date"); and (ii) in the case of the Second  Investment,  December
31, 1998 or such earlier  date in the month of December  1998 as the parties may
mutually agree (the "Second Closing  Date").  On each Closing Date, the Investor
shall  cause the  purchase  price for the  Debentures  being  purchased  on that
Closing Date to be paid into escrow as provided in the Escrow Agreement attached
hereto as Exhibit E, and the  Company  shall  cause the  Debentures  and Warrant
subscribed  for hereby with respect to that Closing Date to be executed,  issued
and  delivered  to the Escrow  Agent as  provided in the Escrow  Agreement.  The
parties  expressly  acknowledge  and agree that on or before the Second  Closing
Date, the Company also shall cause to be delivered to the Investor a certificate
of an officer of the Company to the effect that the conditions  precedent to the
Second  Investment  (as set forth in Section 2.2 above) have been  satisfied and
that the representations and warranties of the Company set forth herein are true
and  correct  as of such  date  and will be true and  correct  as of the  Second
Closing Date.

     3. Payment of Purchase  Price.  The Investor shall cause the purchase price
to be paid in full by wire transfer to the Escrow Agent pursuant to the terms of
the Escrow Agreement.

     4.  Representations  and  Warranties  of the  Company.  The Company  hereby
represents and warrants to the Investor that:

                                        3

<PAGE>


          4.1 Organization,  Good Standing and  Qualification.  The Company is a
corporation duly  incorporated,  validly existing and in good standing under the
laws of the State of Colorado and has all requisite power and authority to carry
on its business and own its  properties as now conducted and owned.  The Company
and each of its  subsidiaries  is duly qualified or licensed to do business as a
foreign  corporation in good standing in each  jurisdiction in which the conduct
of its business or its ownership or leasing of property makes such qualification
or licensing necessary unless the failure to so qualify or be licensed would not
have a Material Adverse Effect.

          4.2  Authorization.  The Company has full power and  authority and has
taken all requisite action on the part of the Company,  its officers,  directors
and stockholders necessary for (i) the authorization,  execution and delivery of
the Agreements, (ii) the performance of all obligations of the Company hereunder
or  thereunder,  and (iii)  the  authorization,  issuance  (or  reservation  for
issuance) and delivery of the Securities.  The Agreements  constitute the legal,
valid and binding obligations of the Company, enforceable against the Company in
accordance with their terms.

          4.3 Valid Issuance.

               (a) The Company  has  reserved a  sufficient  number of shares of
Common Stock for issuance upon  conversion of the Debentures and exercise of the
Warrants,  and such shares,  when issued in accordance with the respective terms
of the Debentures and the Warrants,  will be duly  authorized,  validly  issued,
fully  paid,   non-assessable  and  free  and  clear  of  all  encumbrances  and
restrictions,   except  for  restrictions  on  transfer  imposed  by  applicable
securities laws.

               (b) The authorized capital stock of the Company consists,  solely
of 30,000,000 shares of Common Stock and 5,000,000 shares of preferred stock. As
of July 27, 1998, the Company has 9,991,739 shares of Common Stock and no shares
of preferred  stock issued and  outstanding  and there are no other  outstanding
shares of capital stock of the Company. All of the issued and outstanding shares
of the Company's  Common Stock have been duly  authorized and validly issued and
are fully paid, nonassessable and free of preemptive rights. Except as set forth
on  Schedule  4.3,  no one is entitled to  preemptive  or similar  statutory  or
contractual  rights with respect to any  securities  of the  Company.  Except as
disclosed on Schedule 4.3 to this Agreement,  there are no outstanding warrants,
options,  convertible securities or other rights,  agreements or arrangements of
any character under which the Company is or may be obligated to issue any equity
securities  of any kind, or to transfer any equity  securities of any kind,  and
the Company and its  subsidiaries  do not have any present  plan or intention to
issue any equity securities of any kind, or to transfer any equity securities of
any kind owned by them.  Except as disclosed  on Schedule  4.3, the Company does
not know of any voting agreements, buy-sell agreements, option or right of first
purchase   agreements  or  other  agreements  of  any  kind  among  any  of  the
securityholders  of the Company relating to the securities held by them.  Except
as disclosed  on Schedule  4.3, the Company has not granted any Person the right
to require the Company to register any  securities of the Company under the 1933
Act,  whether  on a demand  basis or in  connection  with  the  registration  of
securities  of the  Company  for its own account or for the account of any other
Person.

                                        4

<PAGE>


               (c)  The  number  of  outstanding  shares  of  Common  Stock,  as
indicated above,  plus the number of shares of Common Stock issuable pursuant to
outstanding rights and agreements,  assuming the complete exercise or conversion
of all rights to acquire  capital  stock of the  Company  until such  rights and
subsequent  rights  incident to exercise or  conversion  are fully  exercised or
converted for Common Stock,  together  represent a total of 13,887,691 shares of
Common Stock immediately prior to the Closing,  plus an indeterminable number of
shares  of  Common  Stock  issuable  to the  Investor  pursuant  to  convertible
debentures previously issued to the investor.

          4.4 Consents.  The execution,  delivery and performance by the Company
of the  Agreements and the offer,  issue and sale of the  Securities  require no
consent of, action by or in respect of, or filing with, any Person, governmental
body,  agency,  or official  other than filings that have been made  pursuant to
applicable  state  securities laws and post-sale  filings pursuant to applicable
state and federal  securities  laws and the  requirements  of Nasdaq,  which the
Company undertakes to file within the applicable time periods.

          4.5 Delivery of SEC Filings;  Business.  The Company has  delivered or
made  available to the Investor  true and correct  copies of (i) its most recent
Annual  Report on Form 10- KSB,  (ii) its  quarterly  reports on Form 10-QSB for
each fiscal  quarter  subsequent  to that  fiscal year end,  and (iii) any other
documents  filed with the Securities and Exchange  Commission  (the "SEC") since
the filing of its most recent  Annual Report on Form 10-KSB  (collectively,  the
"SEC  Filings").  The  Company  and its  subsidiaries  are  engaged  only in the
business described in the SEC Filings and the SEC Filings contain a complete and
accurate description of the business of the Company and its subsidiaries.

          4.6 Use of  Proceeds.  The  proceeds  of the  sale  of the  Securities
hereunder  shall  be used by the  Company  for  working  capital  and  operating
capital.

          4.7 No Material  Adverse Change.  Except as set forth in Schedule 4.7,
since the filing of the Company's most recent Annual Report on Form 10-KSB or as
otherwise  identified  and described in subsequent  reports filed by the Company
pursuant to the 1934 Act, there has not been:

               (i) any change in the consolidated assets, liabilities, financial
condition  or  operating  results  of the  Company  from that  reflected  in the
financial  statements  included in the Company's most recent Quarterly Report on
Form 10-QSB,  except  changes in the ordinary  course of business which have not
had, in the aggregate, a Material Adverse Effect;

               (ii)  any  declaration  or  payment  of  any  dividend,   or  any
authorization or payment of any distribution, on any of the capital stock of the
Company, or any redemption or repurchase of any securities of the Company;

                                        5

<PAGE>


               (iii) any material  damage,  destruction or loss,  whether or not
covered by  insurance to any assets or  properties  of the Company or any of its
subsidiaries;

               (iv) any waiver by the  Company or any of its  subsidiaries  of a
valuable right or of a material debt owed to it;

               (v)  any   satisfaction  or  discharge  of  any  lien,  claim  or
encumbrance  or  payment  of  any  obligation  by  the  Company  or  any  of its
subsidiaries,  except  in the  ordinary  course  of  business  and  which is not
material to the assets,  properties,  financial condition,  operating results or
business of the Company and its subsidiaries  taken as a whole (as such business
is presently conducted and as it is proposed to be conducted);

               (vi) any material  change or amendment to a material  contract or
arrangement  by which the  Company  or any of their  subsidiaries  or any of its
assets or properties is bound or subject;

               (vii) any  material  change in any  compensation  arrangement  or
agreement  with any employee of the Company or any of its  subsidiaries  who now
earns,  or who would earn as a result of such change,  in excess of $100,000 per
annum or any other officer of the Company or any of its subsidiaries;

               (viii)  any  labor   difficulties   or  labor  union   organizing
activities with respect to employees of the Company or any of its subsidiaries;

               (ix) any  transaction  entered  into by the Company or any of its
subsidiaries other than in the ordinary course of business; or

               (x) any other event or  condition  of any  character  which might
have a Material Adverse Effect that is not reflected in the SEC Filings.

          4.8 SEC Filings; Material Contracts.

               (a) As of its filing date,  each report filed by the Company with
the SEC pursuant to the 1934 Act,  complied as to form in all material  respects
with the  requirements of the 1934 Act and did not contain any untrue  statement
of a material fact or omit to state any material fact necessary in order to make
the statements made therein,  in the light of the circumstances under which they
were made, not misleading.

               (b) Each  registration  statement and any amendment thereto filed
by the  Company  pursuant  to  the  1933  Act  and  the  rules  and  regulations
thereunder,  as of the  date  such  statement  or  amendment  became  effective,
complied  as to form in all  material  respects  with  the  1933 Act and did not
contain any untrue  statement  of a material  fact or omit to state any material
fact required to be stated therein or necessary to make the  statements  therein
not misleading; and each prospectus filed pursuant to Rule 424(b) under the 1933
Act,  as of its  issue  date and as of the  closing  of any  sale or  securities
pursuant thereto did not contain any untrue statement of a material fact or omit
to state  any  material  fact  necessary  in order to make the  statements  made
therein,  in the light of the  circumstances  under  which they were  made,  not
misleading.

                                        6

<PAGE>


               (c)  Except  as  listed  in  Schedule  4.8  hereto,  there are no
agreements  or  instruments  currently  in force and effect  that  constitute  a
"material  contract"  (as such term is defined in Item  601(b)(10) of Regulation
S-K) of the Company or that constitute a warrant,  option,  convertible security
or other  right,  agreement  or  arrangement  of any  character  under which the
Company is or may be obligated to issue any equity  security of any kind,  or to
transfer  any equity  security of any kind.  The Company  has  delivered  to the
Investor  prior  to the  Closing  full and  complete  copies  of all  agreements
indicated in Schedule 4.8 hereto.

          4.9  Registration  Rights.  The  registration  rights  granted  to the
Investor pursuant to the Registration Rights Agreement are at least as favorable
to the Investor as those granted to any holder of any  securities of the Company
are to such holder.

          4.10 No Breach,  Violation  or Default.  The  execution,  delivery and
performance of the  Agreements and the issuance and sale of the Securities  will
not result in a breach or  violation of any of the terms and  provisions  of, or
constitute  a default  under,  any  statute,  rule,  regulation  or order of any
governmental  agency  or  body  or  any  court,  domestic  or  foreign,   having
jurisdiction  over the Company or any  subsidiary of the Company or any of their
properties,  or any  agreement  or  instrument  to which the Company or any such
subsidiary is a party or by which the Company or any such subsidiary is bound or
to which any of the properties of the Company or any such subsidiary is subject,
or the  Certificate  of  Incorporation  or  By-Laws  of the  Company or any such
subsidiary.

          4.11 Tax Returns and Payments.  The Company and its subsidiaries  have
correctly  and timely  prepared and filed all tax returns  required to have been
filed by it with all appropriate federal,  state and local governmental agencies
and timely paid all taxes owed by them.  The  charges,  accruals and reserves on
the books of the Company and its subsidiaries in respect of taxes for all fiscal
periods are adequate in all material respects,  and there are no material unpaid
assessments  of the  Company or any  subsidiary  nor,  to the  knowledge  of the
Company,  any basis for the  assessment of any  additional  taxes,  penalties or
interest for any fiscal period or audits by any federal,  states or local taxing
authority  except such as which are not material.  All material  taxes and other
assessments  and levies  which the  Company or any  subsidiary  is  required  to
withhold or to collect for payment  have been duly  withheld and  collected  and
paid to the proper governmental entity or third party. There are no tax liens or
claims  pending or  threatened  against the Company or any  subsidiary or any of
their  respective  assets or  property.  There are no  outstanding  tax  sharing
agreements or other such arrangements  between the Company or any subsidiary and
any other corporation or entity.

          4.12 Title to Properties.  Except as disclosed in the SEC Filings, the
Company  and its  subsidiaries  have  good  and  marketable  title  to all  real
properties and all other  properties and assets owned by them, in each case free
from liens,  encumbrances  and defects  that would  materially  affect the value
thereof or  materially  interfere  with the use made or currently  planned to be
made thereof by them;  and except as  disclosed in the SEC Filings,  the Company
and its subsidiaries  hold any leased real or personal  property under valid and
enforceable  leases with no exceptions that would materially  interfere with the
use made or currently planned to be made thereof by them.

                                        7

<PAGE>


          4.13  Certificates,  Authorities  and  Permits.  The  Company  and its
subsidiaries  possess  adequate  certificates,  authorities or permits issued by
appropriate  governmental  agencies or bodies  necessary to conduct the business
now operated by them and have not received any notice of proceedings relating to
the  revocation or  modification  of any such  certificate,  authority or permit
that, if determined  adversely to the Company or any of its subsidiaries,  would
individually or in the aggregate have a Material Adverse Effect.

          4.14 No Labor  Disputes.  No labor  dispute with the  employees of the
Company  or any  subsidiary  exists  or, to the  knowledge  of the  Company,  is
imminent that might have a Material Adverse Effect.

          4.15  Intellectual  Property.  The Company and its subsidiaries own or
possess  adequate  trademarks  and  trade  names  and have all  other  rights to
inventions,  know-how, patents,  copyrights,  confidential information and other
intellectual property  (collectively,  "Intellectual Property Rights"), free and
clear of all liens,  security  interests,  charges,  encumbrances,  equities and
other adverse claims, necessary to conduct the business now operated by them, or
presently  employed by them, and presently  contemplated to be operated by them,
and have not received any notice of  infringement  of or conflict  with asserted
rights of others with  respect to any  Intellectual  Property  Rights  that,  if
determined  adversely  to  the  Company  or  any  of  its  subsidiaries,   would
individually or in the aggregate have a Material Adverse Effect.  No proprietary
technology of any Person was used in the design or development by the Company of
(or otherwise  with respect to) any of the  Intellectual  Property  Rights which
technology was not properly acquired by the Company from such Person.

          4.16  Environmental  Matters.  Neither  the  Company  nor  any  of its
subsidiaries is in violation of any statute, rule, regulation, decision or order
of any governmental agency or body or any court,  domestic or foreign,  relating
to the use,  disposal or release of hazardous or toxic substances or relating to
the protection or restoration of the  environment or human exposure to hazardous
or toxic substances  (collectively,  "Environmental Laws"), owns or operates any
real  property   contaminated   with  any  substance  that  is  subject  to  any
Environmental  Laws,  is  liable  for any  off-site  disposal  or  contamination
pursuant to any  Environmental  Laws, or is subject to any claim relating to any
Environmental  Laws,  which violation,  contamination,  liability or claim would
individually or in the aggregate have a Material Adverse Effect; and the Company
is not aware of any pending investigation which might lead to such a claim.

          4.17 Litigation.  Except as disclosed in the SEC Filings, there are no
pending actions,  suits or proceedings against or affecting the Company,  any of
its  subsidiaries  or any of their  respective  properties  that,  if determined
adversely to the Company or any of its  subsidiaries,  would  individually or in
the aggregate have a Material  Adverse Effect or would  materially and adversely
affect  the  ability  of the  Company  to  perform  its  obligations  under this
Agreement,  or which are  otherwise  material  in the context of the sale of the
Securities;   and  to  the  Company's  knowledge,  no  such  actions,  suits  or
proceedings are threatened or contemplated.

                                        8

<PAGE>


          4.18 Financial  Statements.  The financial statements included in each
SEC Filing present fairly the consolidated financial position of the Company and
its  subsidiaries  as of the  dates  shown  and their  consolidated  results  of
operations and cash flows for the periods shown,  and such financial  statements
have  been  prepared  in  conformity  with  the  generally  accepted  accounting
principles applied on a consistent basis.

          4.19 Insurance Coverage.  The Company and its subsidiaries maintain in
full  force and effect  insurance  coverage  that is  customary  for  comparably
situated  companies for the business being  conducted,  and properties  owned or
leased, by the Company and its subsidiaries, and the Company reasonably believes
such insurance coverage to be adequate against all liabilities, claims and risks
against which it is customary for comparably situated companies to insure.

          4.20  Compliance  with  Nasdaq  Continued  Listing  Requirements.  The
Company is in compliance with all applicable  Nasdaq Small Cap Market  continued
listing  requirements  and has not received any notice from Nasdaq  concerning a
possible delisting of the Company's Common Stock within the last twelve months.

          4.21 Acknowledgment of Dilution.  The number of shares of Common Stock
issuable upon conversion of the Debentures may increase substantially in certain
circumstances,  including the circumstance where the trading price of the Common
Stock declines.  The Company's executive officers and directors have studied and
fully understand the nature of the Securities being sold hereunder and recognize
that such  Securities  have a dilutive  effect.  The Board of  Directors  of the
Company has concluded in its good faith business  judgment that such issuance is
in the  best  interests  of the  Company.  The  Company  acknowledges  that  its
obligations to issue shares of Common Stock in accordance  with the terms of the
Debentures upon conversion of the Debentures are binding upon it and enforceable
regardless of the dilution that such issuance may have on the ownership interest
of the other stockholders of the Company.

          4.22 Brokers and Finders.  The Company has taken no action which would
give rise to any claim by any Person for a broker's commission,  finder's fee or
similar payment by the Company or the Investor  related to this Agreement or the
transactions contemplated hereby, except for amounts which are payable to Rochon
Capital Group,  Ltd. which shall be the sole  responsibility  of the Company and
shall be paid exclusively by the Company out of escrow from the proceeds hereof.

          4.23 No Directed Selling Efforts or General Solicitation.  Neither the
Company  nor  any  person  acting  on  its  behalf  has  conducted  any  general
solicitation  or general  advertising  (as those terms are used in  Regulation D
under  the  1933  Act)  in  connection  with  the  offer  or  sale of any of the
Securities.

                                        9

<PAGE>


          4.24  No  Integrated  Offering  Requiring  Registration.  Neither  the
Company nor any of its Affiliates, nor any Person acting on its or their behalf,
has,  directly  or  indirectly,  made any  offers  or sales of any  security  or
solicited any offers to buy any security, under circumstances that would require
registration  of the offer  and sale of the  Securities  under the 1933 Act,  or
cause the offering of the Securities to be integrated with any prior offering(s)
by the  Company  for  purposes  of the  1933 Act or any  applicable  shareholder
approval provisions, including those under the rules of Nasdaq.

          4.25 Year 2000.  All of the products  which are being offered and sold
by the  Company  are now Year  2000  compliant,  which for the  purpose  of this
Section 4.25 means that such products  contain and/or rely on computer  software
programs  which are capable of handling  and  processing  dates  beyond the year
1999. The Company has undertaken all commercially  reasonable  efforts to ensure
that its  operational  computer  systems also are prepared to handle and process
dates beyond the year 1999.

          4.26 Disclosures. No representation or warranty made under any Section
hereof and no information  furnished by the Company pursuant  hereto,  or in any
other  document,  certificate  or  statement  furnished  by the  Company  to the
Investor  or any  authorized  representative  of the  Investor,  pursuant to the
Agreements  or in  connection  therewith,  contains  any untrue  statement  of a
material fact or omits to state a material fact necessary to make the respective
statements  contained  herein or therein,  in light of the  circumstances  under
which the statements were made, not misleading.

     5.  Representations  and  Warranties of the Investor.  The Investor  hereby
represents and warrants to the Company that:

          5.1  Organization  and Existence.  The Investor is a validly  existing
limited liability company and has all requisite corporate power and authority to
invest in the  Securities  pursuant  to this  Agreement.  The  Investor is not a
resident of the United States or any state, district or territory thereof.

          5.2  Authorization.  The  execution,  delivery and  performance by the
Investor of the Agreements  have been duly  authorized  and the Agreements  will
each  constitute  the valid and  legally  binding  obligation  of the  Investor,
enforceable against the Investor in accordance with their terms.

          5.3 Purchase  Entirely for Own Account.  The Securities to be received
by such Investor  hereunder  will be acquired for  investment for the Investor's
own  account,  not as  nominee  or agent,  and not with a view to the  resale or
distribution of any part thereof,  and the Investor has no present  intention of
selling,  granting any participation in, or otherwise distributing the same. The
Investor is not a registered  broker dealer or a Person  engaged in the business
of being a broker dealer.

          5.4 Investment Experience.  The Investor acknowledges that it can bear
the economic risk and complete loss of its  investment in the Securities and has
such  knowledge  and  experience  in  financial  or business  matters that it is
capable  of  evaluating  the  merits  and risks of the  investment  contemplated
hereby.

                                       10

<PAGE>


          5.5 Disclosure of Information.  The Investor has had an opportunity to
ask questions and receive  answers from the Company  regarding the Company,  its
business and the terms and conditions of the offering of the Securities. Neither
such  inquiries  nor any  other due  diligence  investigation  conducted  by the
Investor  shall  modify,  amend or affect  the  Investor's  right to rely on the
Company's  representations  and  warranties  contained in this Agreement or made
pursuant to this Agreement.

          5.6  Restricted   Securities.   The  Investor   understands  that  the
Securities  are  characterized  as  "restricted  securities"  under the  federal
securities  laws  inasmuch  as they are being  acquired  from the  Company  in a
transaction  not  involving  a public  offering  and that  under  such  laws and
applicable  regulations such securities may be resold without registration under
the 1933 Act only in certain limited circumstances.

          5.7 Legends.  It is understood  that,  until  registration  for resale
pursuant to the  Registration  Rights  Agreement,  certificates  evidencing  the
Securities may bear one or all of the following legends:

               (a)  "These   securities  have  not  been  registered  under  the
Securities  Act of 1933 (the  "Act").  They may not be sold,  offered  for sale,
pledged or  hypothecated  in the absence of a  registration  statement in effect
with  respect  to  the  securities  under  the  Act  or an  exemption  from  the
registration requirements of the Act."

               (b) If required  by the  authorities  of any state in  connection
with the issuance of sale of the  Securities,  the legend required by such state
authority.

          Upon  registration  for resale  pursuant  to the  Registration  Rights
Agreement,  all certificates evidencing the Common Stock shall be issued free of
such restrictive legends.

          5.8  Accredited  Investor.  The Investor is an accredited  investor as
defined in Rule 501(a) of Regulation D, as amended, under the 1933 Act.

          5.9 No  General  Solicitation.  The  Investor  did  not  learn  of the
investment in the  Securities as a result of any public  advertising  or general
solicitation.

     6. Registration  Rights Agreement.  The parties  acknowledge and agree that
part of the  inducement  for the  Investor to enter into this  Agreement  is the
Company's  execution  and delivery of the  Registration  Rights  Agreement.  The
parties acknowledge and agree that simultaneously with the execution hereof, the
Registration  Rights  Agreement  is being duly  executed  and  delivered  by the
parties thereto.

     7. Covenants and Agreements of the Company.

                                       11

<PAGE>


          7.1 Capital  Raising  Limitations.  From the date  hereof  through the
eight-month  period  following  the  later  of (A)  the  effective  date  of the
registration statement contemplated by the Registration Rights Agreement and (B)
the Second  Closing Date (the  "Restricted  Period"),  without the prior written
consent of the Investor  (which consent may be withheld in such  Investor's sole
discretion),  the Company shall not issue or sell, or agree to issue or sell (a)
any  equity  or debt  securities  that are  convertible  into,  exchangeable  or
exercisable  for,  or include the right to receive  additional  shares of Common
Stock either (i) at a conversion,  exercise or exchange rate or other price that
is based upon and/or  varies with the trading  prices of or  quotations  for the
Common  Stock at any time  after  the  initial  issuance  of such debt or equity
securities; or (ii) with a fixed conversion,  exercise or exchange price that is
subject to being reset at some future date(s) after the initial issuance of such
debt or equity security or upon the occurrence of specified or contingent events
directly or indirectly  related to the business of the Company or the market for
the Common Stock;  or (b) any  securities of the Company  pursuant to an "equity
line" structure which provides for the sale, from time to time, of securities of
the  Company  which are  registered  for  resale  pursuant  to the 1933 Act (the
transactions in this sentence being  collectively  referred to as "Variable Rate
Transactions").  The Restricted Period shall be extended by that number of days,
if any, during which any Blackout Period (as defined in the Registration  Rights
Agreement) has been in effect.

          7.2 Rights of Investor upon Additional  Offerings.  The Company agrees
that for the period of one year following the later of (A) the effective date of
the registration  contemplated by the Registration  Rights Agreement and (B) the
Second Closing Date,  the Company shall give thirty days advance  written notice
to the Investor  prior to any offer or sale of any of its equity  securities  or
any  securities  convertible  into  or  exchangeable  or  exercisable  for  such
securities.  In  addition,  prior to the closing of any such sale,  the Investor
shall have the right to  participate  in such  offering and purchase such equity
securities  for the same  consideration  and on the same terms and conditions as
contemplated for such third-party sale, which right must be exercised in writing
by the Investor  within ten business days  following  receipt of the notice from
the  Company.  If,  subsequent  to the  Company  giving  notice to the  Investor
hereunder, the terms and conditions of the proposed third-party sale are changed
in any way,  the  Company  shall be  required  to  provide  a new  notice to the
Investor  hereunder and the Investor  shall have the right to participate in the
offering on such changed terms and conditions as provided hereunder.

          7.3  Limitation  on  Acquisitions  by Company.  Commencing on the date
hereof and  continuing  for a period of one year following the effective date of
the registration  statement  contemplated by the Registration  Rights Agreement,
the Company agrees that it shall not, directly or indirectly, in one or a series
of transactions,  purchase all or substantially all of the assets of, or greater
than a majority of the outstanding  securities of any entity having an after-tax
loss in excess of $100,000  for the most recent  four fiscal  quarters  from the
closing  date of any such  acquisition  by the Company  (or the earlier  date on
which the Company  makes any  payment,  in cash,  stock or kind,  in  connection
therewith), without obtaining the prior written consent of the Investor.

                                       12

<PAGE>


          7.4 Opinion of Counsel. The Company has delivered, simultaneously with
the execution  and delivery of this  Agreement,  the opinion of Norton  Lidstone
LLC, its counsel, in the form attached hereto as Exhibit F.

          7.5  Reservation  of Common Stock  Pursuant to Conversion of Debenture
and Exercise of Warrants.  The Company hereby agrees to at all times reserve and
keep available out of its authorized but unissued shares of Common Stock, solely
for the purpose of  permitting  conversion  of the Debenture and exercise of the
Warrant,  such number of shares of Common Stock as shall from time to time equal
1.5 times the number of shares  sufficient to permit the complete  conversion of
the Debenture plus the number of shares of Common Stock as shall be necessary to
permit the exercise of the Warrant in accordance  with the  respective  terms of
the Debenture and the Warrant.

          7.6 Reports. So long as the Investor holds Debentures or Warrants, the
Company will deliver to the Investor the following  reports by overnight courier
to the address set forth in Section 9.4:

               (a)  Quarterly  Reports.  As soon as  available  and in any event
within  45 days  after  the end of  each  fiscal  quarter  of the  Company,  the
Company's Form 10-QSB or, in the absence of a Form 10-QSB,  consolidated balance
sheets of the Company and its  subsidiaries as at the end of such period and the
related  consolidated  statements of operations,  stockholders'  equity and cash
flows for such period and for the portion of the Company's  fiscal year ended on
the last day of such  quarter,  all in  reasonable  detail  and  certified  by a
principal  financial  officer of the Company to have been prepared in accordance
with generally  accepted  accounting  principles,  subject to year-end and audit
adjustments.

               (b) Annual Reports.  As soon as available and in any event within
90 days after the end of each fiscal year of the  Company,  the  Company's  Form
10-KSB or, in the absence of a Form 10-KSB,  consolidated  balance sheets of the
Company  and  its  subsidiaries  as at the  end of such  year  and  the  related
consolidated  statements  of earnings,  stockholders'  equity and cash flows for
such  year,  all in  reasonable  detail  and  accompanied  by the report on such
consolidated  financial statements of an independent certified public accountant
selected by the Company and reasonably satisfactory to the Investor.

               (c) Securities  Filings.  As promptly as  practicable  and in any
event  within  five days after the same are  issued or filed,  copies of (i) all
press releases issued by the Company or any subsidiary,  and all notices,  proxy
statements,  financial  statements,  reports and documents as the Company or any
subsidiary  shall send or make  available  generally to its  stockholders  or to
financial  analysts,  and (ii) all periodic and special  reports,  documents and
registration  statements  (other  than on Form  S-8)  which the  Company  or any
subsidiary  furnishes or files, or any officer or director of the Company or any
of its subsidiaries (in such person's  capacity as such) furnishes or files with
the SEC.

                                       13

<PAGE>


               (d) Other  Information.  Such other  information  relating to the
Company or its  subsidiaries as from time to time may reasonably be requested by
the Investor  provided the Company  produces  such  information  in its ordinary
course of business.

          7.7 Press Releases.  At least 48 hours prior to issuance,  the Company
shall submit for comment by facsimile to the Investor any press release or other
publicity   concerning  the  Investor,   the   Transaction   Agreements  or  the
transactions contemplated thereby.

          7.8 No  Conflicting  Agreements.  The Company  will not,  and will not
permit its  subsidiaries  to, take any action,  enter into any agreement or make
any commitment  which would  conflict or interfere in any material  respect with
the obligations to the Investor under the Agreements.

          7.9 Insurance.  The Company shall, and shall cause each subsidiary to,
have in full force and effect (a) insurance  reasonably  believed to be adequate
on all assets and activities of a type customarily  insured,  covering  property
damage  and  loss of  income  by  fire  or  other  casualty,  and (b)  insurance
reasonably  believed to be adequate  protection against all liabilities,  claims
and risks against which it is customary for companies  similarly situated as the
Company and the subsidiaries to insure.

          7.10  Compliance  with Laws. The Company will use reasonable  efforts,
and will cause each of its subsidiaries to use reasonable  efforts, to comply in
all material respects with all applicable laws, rules,  regulations,  orders and
decrees of all governmental authorities, except to the extent non-compliance (in
one instance or in the aggregate) would not have a Material Adverse Effect.

          7.11 Corporate Governance.  For so long as the Convertible  Debenture,
or any portion  thereof,  is  outstanding  and/or the Investor is the beneficial
owner of the Company's Common Stock, the Company:

               (a)  Shall  distribute  to its  shareholders  copies of an annual
report  containing   audited  financial   statements  of  the  Company  and  its
subsidiaries a reasonable  period of time prior to the Company's  annual meeting
of shareholders;

               (b) Shall maintain a minimum of two independent  directors on its
board of directors;

               (c) Shall hold an annual meeting of  shareholders  each and every
year;

               (d) Shall solicit  proxies and provide proxy  statements  for all
meetings of shareholders;

               (e) Shall obtai shareholder approval of (i) a plan or arrangement
pursuant to which stock may be acquired by officers or  directors of the Company
(except for warrants or rights issued  generally to  shareholders of the Company
or  broadly  based  plans  or  arrangements  including  other  employees  of the
Company);  (ii) an issuance of the Company's  securities  when the issuance will

                                       14

<PAGE>



result in a change of control;  (iii) an issuance of the Company's securities in
connection with the  acquisition of another  company if shareholder  approval of
such issuance is required  under  applicable  Nasdaq  rules;  and (iv) any other
issuance of the Company's securities if shareholder approval of such issuance is
required under applicable Nasdaq rules.

     8.  Survival.  All  representations,  warranties,  covenants and agreements
contained in this Agreement shall be deemed to be  representations,  warranties,
covenants  and  agreements as of the date hereof and shall survive the execution
and  delivery of this  Agreement  for a period of five years and six months from
the date of this Agreement;  provided, however, that the provisions contained in
Section 7 hereof shall survive in accordance therewith.

     9. Miscellaneous.

          9.1  Successors  and Assigns.  This  Agreement  may not be assigned by
either party without the prior written consent of the other party hereto, except
that without the prior  written  consent of the  Company,  but after notice duly
given,  the Investor may assign its rights and delegate its duties  hereunder to
an  Affiliate,  and without the prior  written  consent of  Investor,  but after
notice duly given,  the  Company may assign its rights and  delegate  its duties
hereunder to any  successor-in-interest  corporation in the event of a merger or
consolidation of the Company with or into another corporation,  or any merger or
consolidation  of another  corporation  with or into the Company  which  results
directly or  indirectly  in an aggregate  change in the  ownership or control of
more than 50% of the voting rights of the equity  securities of the Company,  or
the sale of all or  substantially  all of the  Company's  assets.  The terms and
conditions of this  Agreement  shall inure to the benefit of and be binding upon
the respective permitted successors and assigns of the parties.  Nothing in this
Agreement,  express or implied,  is intended to confer upon any party other than
the  parties  hereto or their  respective  successors  and  assigns  any rights,
remedies,  obligations,  or  liabilities  under or by reason of this  Agreement,
except as expressly provided in this Agreement.

          9.2  Counterparts.  This  Agreement  may be  executed  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.

          9.3  Titles and  Subtitles.  The  titles  and  subtitles  used in this
Agreement  are  used  for  convenience  only  and  are not to be  considered  in
construing or interpreting this Agreement.

          9.4  Notices.  Unless  otherwise  provided,  any  notice  required  or
permitted  under this  Agreement  shall be given in writing  and shall be deemed
effectively given upon personal delivery to the party to be notified, or if sent
by telex or telecopier, upon receipt of the correct answer back, or upon deposit
with the United States Post Office,  by  registered  or certified  mail, or upon
deposit  with an  overnight  air  courier,  in each  case  postage  prepaid  and
addressed  to the party to be notified  at the  address as  follows,  or at such
other address as such party may designate by ten days' advance written notice to
the other party:

                                       15

<PAGE>



                           If to the Company:

                                    Medical Dynamics, Inc.
                                    99 Inverness Drive East
                                    Englewood, CO 80112
                                    Attn:  Van A. Horsley
                                    Telephone:  303/790-2990
                                    Facsimile:   303/799-1378

                                    with a copy to:

                                    Norton Lidstone LLC
                                    5445 DTC Parkway, Suite 850
                                    Denver, CO 80111
                                    Attn:  Herrick Lidstone, Jr.
                                    Telephone:  303/221-5552
                                    Facsimile:   303/221-5553

                           If to the Investor:

                                    The Tail Wind Fund, Ltd.
                                    Windermere House
                                    404 East Bay Street
                                    P.O. Box SS-5539
                                    Nassau, Bahamas
                                    Telephone:
                                    Facsimile:


                                    with a copy to:

                                    The Tail Wind Fund, Ltd.
                                    c/o European American Securities, Inc.
                                    One Regent Street, 4th Floor
                                    London SW1Y 4NS
                                    England
                                    Attn:  David Crook
                                    Telephone:  44-171-468-7660
                                    Facsimile:   44-171-468-7657

                                    and with a copy to:

                                    Bryan Cave LLP
                                    700 Thirteenth Street, N.W.
                                    Washington, D.C.  20005
                                    Attn:  LaDawn Naegle
                                    Telephone:  202/508-6046
                                    Facsimile:   202/508-6200

                                       16

<PAGE>


          9.5  Expenses.  The  Company  shall  pay the fees of Bryan  Cave  LLP,
counsel to the Investor, in an amount up to $12,500.

          9.6 Amendments and Waivers.  Any term of this Agreement may be amended
and the observance of any term of this Agreement may be waived (either generally
or in a particular  instance and either  retroactively or  prospectively),  only
with the written  consent of the  Company and the  Investor.  Any  amendment  or
waiver  effected in accordance  with this  paragraph  shall be binding upon each
holder of any Securities purchased under this Agreement at the time outstanding,
each future holder of all such securities, and the Company.

          9.7 Severability. If one or more provisions of this Agreement are held
to be unenforceable  under applicable law, such provision shall be excluded from
this Agreement and the balance of this Agreement shall be interpreted as if such
provision  were so excluded  and shall be  enforceable  in  accordance  with its
terms.

          9.8 Entire  Agreement.  This  Agreement,  including  the  Exhibits and
Schedules hereto,  and the Registration  Rights Agreement  constitute the entire
agreement among the parties hereof with respect to the subject matter hereof and
thereof and supersede all prior  agreements  and  understandings,  both oral and
written,  between the parties  with  respect to the  subject  matter  hereof and
thereof.

          9.9 Further Assurances. The parties shall execute and deliver all such
further  instruments  and  documents  and  take all such  other  actions  as may
reasonably be required to carry out the transactions  contemplated hereby and to
evidence the fulfillment of the agreements herein contained.

          9.10  Applicable  Law.  This  Agreement  shall  be  governed  by,  and
construed in accordance  with, the laws of the State of Colorado  without regard
to principles of conflicts of laws.

                                       17

<PAGE>


     IN WITNESS WHEREOF, the parties have executed this Agreement as of the date
first above written.



The Company:                         MEDICAL DYNAMICS, INC.


                                              By:_________________________
                                              Name:  Van A. Horsley
                                              Title:     President



The Investor:                        THE TAIL WIND FUND, LTD.


                                              By:_________________________
                                              Name:
                                              Title:


                                       18

<PAGE>


                                  Schedule 4.3
                                  ------------

                  See attached Schedule 4.3

  






                                       19
<PAGE>


                                  Schedule 4.7
                                  ------------

                  None.






                                       20

<PAGE>



                                  Schedule 4.8
                                  ------------

                  None.





                                       21



                                                                        CD98-001

                              CONVERTIBLE DEBENTURE
                              ---------------------

$100,000                                                           July __, 1998

     FOR VALUE RECEIVED,  the undersigned,  Medical  Dynamics,  Inc., a Colorado
corporation (the "Company"), promises to pay to the order of The Tail Wind Fund,
Ltd., or the holder hereof, on July __, 2003 ("Due Date"),  the principal sum of
One Hundred  Thousand  Dollars  ($100,000),  or, if less,  the unpaid  principal
amount  outstanding  at such time,  in either case together with all accrued and
unpaid interest thereon.

     The Company  also  promises  to pay  interest  semi-annually  from the date
hereof on the  principal  amount  hereof  unpaid  during such period  (including
amounts converted during the period for the time such was outstanding) at a rate
of eight percent (8%) per annum. Interest on this Debenture shall be computed on
the basis of a 360-day  year.  Interest  through  the last day of the  preceding
calendar  semi-annual period shall be payable on or before the fifth day of each
January and July, commencing in January 1999.

     This Debenture is one of the Debentures  referred to in and issued pursuant
to the  Purchase  Agreement  dated July __,  1998,  between  the Company and the
Investor  named  therein  (the  "Purchase  Agreement"),  and is  entitled to the
benefits of, and subject to the terms and provisions of the Purchase  Agreement.
Capitalized  terms used herein and not otherwise  defined  herein shall have the
meaning ascribed to them in the Purchase Agreement.

     1. Payments

     All payments by the Company  hereunder  shall be payable in lawful money of
the United States in immediately  available funds by wire transfer to an account
designated in writing by the Investor, or in the case of conversion of principal
and,  at the option of the  Company,  payment of  interest,  in shares of common
stock of the Company, par value $.001 per share (the "Common Stock"),  valued at
the  Conversion  Price (for the conversion of principal) and at the Market Price
(for the payment of  interest),  not later than 5:00 p.m.,  Mountain time on the
day when due to the holder at the following address:

                            The Tail Wind Fund, Ltd.
                            c/o Mees Pierson Fund Services
                            Fourth Floor Russell House
                            Dublin 2 IRELAND 1M14LE
                            United Kingdom

or at such other place as the holder  hereof may from time to time  designate in
writing  to the  Company.  Whenever  any  payment  to be made  pursuant  to this
Debenture  shall be stated to be due on a public  holiday,  Saturday  or Sunday,
such payment may be made on the next succeeding  business day. Such extension of
time  shall not in such case be  included  in  computing  interest,  if any,  in
connection with such payment.



<PAGE>

     2. Conversion of Debenture

          (a) From time to time,  until all unpaid  principal  and  accrued  and
unpaid interest under this Debenture is paid, the holder of this Debenture shall
have the right to  convert  (i) at any time from and  after one  hundred  twenty
(120) days after the original  issuance hereof, up to one-third of the principal
amount of this  Debenture,  (ii) at any time from and after one  hundred  eighty
(180) days after the original  issuance hereof, up to an aggregate of two-thirds
of the principal amount of this Debenture,  and (iii) at any time from and after
two hundred  forty (240) days after the  original  issuance  hereof,  all of the
principal amount of this Debenture,  in whole or in part, into an amount of duly
authorized,  fully-paid and non-assessable  shares of Common Stock determined by
dividing such principal  amount to be so converted by the  Conversion  Price (as
hereinafter  defined),  and  upon  the  terms  and  subject  to  the  conditions
hereinafter  specified  in this Section 2. Any unpaid  principal  amount of this
Debenture  outstanding  on the Due Date,  together  with any  accrued and unpaid
interest thereon,  shall automatically convert to Common Stock at the Conversion
Price (defined below).

          (b) In order to convert this  Debenture  into shares of Common  Stock,
the holder shall:  (i) fax a copy of the fully executed  notice of conversion in
the form attached  hereto  ("Notice of Conversion") to the Company at the office
of the Company or its designated  transfer  agent,  if any, for the  Debentures,
which notice shall  specify the amount of the  Debenture  to be  converted,  the
applicable Conversion Price, and a calculation of the number of shares of Common
Stock issuable upon such  conversion  (together with a copy of the first page of
this  Debenture)  prior to 5:00  p.m.,  Mountain  time (the  "Conversion  Notice
Deadline") on the date of conversion specified on the Notice of Conversion;  and
(ii) surrender the original Debenture being converted,  along with a copy of the
Notice of  Conversion  as soon as  practicable  thereafter  to the office of the
Company or the transfer agent, if any, for the  Debentures;  provided,  however,
that the Company  shall not be obligated to issue  certificates  evidencing  the
shares of Common Stock issuable upon such conversion unless either the Debenture
is  delivered  to the Company or its transfer  agent as provided  above,  or the
holder  notifies the Company or its transfer agent that such original  Debenture
has  been  lost,  stolen  or  destroyed.  In the  case  of a  dispute  as to the
calculation  of the  Conversion  Price,  the Company shall  promptly  issue such
number of shares  of Common  Stock  that are not  disputed  in  accordance  with
subparagraph  (c) below.  The Company shall submit the disputed  calculations to
its outside  accountant via facsimile within two (2) business days of receipt of
the Notice of Conversion. The accountant shall audit the calculations and notify
the  Company  and the holder of the results no later than 48 hours from the time
it receives the disputed  calculations.  The accountant's  calculation  shall be
deemed conclusive absent manifest error.

          (c) Upon the surrender of the Debenture as described above accompanied
by the  Notice of  Conversion,  the  Company  shall  issue  and,  within two (2)
business days (the  "Delivery  Period") after such surrender (or, in the case of
lost,  stolen or  destroyed  Debenture,  after  provision  of an  agreement  and
indemnification  by the holder to the  Company),  direct its  transfer  agent to
deliver to or upon the order of the  holder (i) that  number of shares of Common
Stock for the  portion of the  Debenture  converted  as shall be  determined  in


                                       2
<PAGE>


accordance  herewith and (ii) a new  Debenture  representing  the balance of the
principal  amount of the Debenture  surrendered  but not  converted,  if any. In
addition to any other remedies available to the holder, including actual damages
and/or  equitable  relief,  the Company shall pay to the holder $250 in cash for
the third day beyond such  Delivery  Period  that the  Company  fails to deliver
Common  Stock  issuable  upon  surrender  of  the  Debenture  with a  Notice  of
Conversion, and $500 per day in cash for each day thereafter, until such time as
the earlier of the date that the Company has delivered all such Common Stock and
the tenth day beyond such  Delivery  Period.  Such cash amount  shall be paid to
such  holder by the fifth day of the month  following  the month in which it has
accrued.  In the event the Company  fails to deliver  such Common Stock prior to
the  expiration  of five (5)  business  days after the  Delivery  Period for any
reason  (whether due to a requirement  of law or a stock exchange or otherwise),
the holder  shall be entitled to a 1% discount on the  Conversion  Price for the
next conversion noticed by such holder to the Company.  In the event the Company
fails to deliver  such  Common  Stock  prior to the  expiration  of the ten (10)
business day period after the Delivery  Period for any reason  (whether due to a
requirement  of law or a stock  exchange or  otherwise),  such  holder  shall be
entitled  to (in  addition  to  any  other  remedies  available  to the  holder)
Conversion  Default Payments in accordance with Section 2(h) hereof beginning on
the expiration of such ten (10) business day period.

          (d) If any conversion of this  Debenture  would result in a fractional
share of Common  Stock or the  right to  acquire  a  fractional  share of Common
Stock, such fractional share shall be disregarded.

          (e) The "Conversion Date" shall be the date specified in the Notice of
Conversion,  provided (i) that the advance copy of the Notice of  Conversion  is
faxed to the Company before 5:00 p.m.,  Mountain  time, on the Conversion  Date,
and (ii) that the  original  Debenture is  surrendered  along with a copy of the
Notice of  Conversion  as soon as  practicable  thereafter  to the office of the
Company or the transfer agent for the Debentures. The person or persons entitled
to received the shares of Common Stock issuable upon conversion shall be treated
for all purposes as the record  holder or holders of such  securities  as of the
Conversion Date and all rights with respect to the Debenture  fully  surrendered
shall forthwith terminate except the right to receive the shares of Common Stock
or other securities or property issuable on such conversion.

          (f) The  Conversion  Price per share (  "Conversion  Price")  at which
shares of Common Stock shall be issuable upon conversion of this Debenture shall
be equal to 100% of the Market Price on the business day  immediately  preceding
the Conversion  Date;  provided,  however,  that the Conversion  Price shall not
exceed the Ceiling Price (defined below).  "Market Price" shall mean the average
of the two lowest  closing  bid prices of the Common  Stock as  reported  by The
Nasdaq  Stock  Market over the sixty  trading  day period  ending on the date in
question.  The "Ceiling  Price" shall mean 120% of the average closing bid price
of the Common Stock for the twenty  trading days prior to the effective  date of
the registration  statement  contemplated by the  Registration  Rights Agreement
entered  into by and between the parties on July __,  1998;  provided,  however,
that the Ceiling Price shall be adjusted  effective upon the second  anniversary
of the  Purchase  Agreement  to 120% of the Market  Price on such date,  if such
adjustment  would  result in a lower  price,  but in no event  shall the Ceiling
Price be adjusted to an amount less than $2.25.

                                       3
<PAGE>

          (g) In order to prevent  dilution  of the  conversion  rights  granted
under this Section 2, the Conversion  Price shall be subject to adjustment  from
time to time as follows:

               (i) If the  Common  Stock  shall  be  changed  into the same or a
different number of shares of any class or classes of capital stock,  whether by
capital  reorganization,  recapitalization,  reclassification or otherwise or in
the event of a merger  or  consolidation  of the  Company  with or into  another
corporation  or the sale of  substantially  all of the  Company's  assets to any
other  person,  then and in each such event the holder of this  Debenture  shall
have the right  thereafter to convert this Debenture or any portion thereof into
the kind and amount of shares of capital stock and other securities and property
receivable upon such reorganization, recapitalization, reclassification, merger,
consolidation,  sale or other  change  by a holder  of the  number  of shares of
Common Stock into which this  Debenture  might have been  converted  immediately
prior  to  such  reorganization,  recapitalization,   reclassification,  merger,
consolidation, sale or change.

               (ii)  If  any  event  occurs  of  the  type  contemplated  by the
provisions  of  this  Section  2(g)  but  not  expressly  provided  for by  such
provisions  (including,  without limitation,  the granting of stock appreciation
rights,  phantom  stock rights or other rights with equity  features),  then the
Company's  board  of  directors  shall  make an  appropriate  adjustment  in the
Conversion  Price so as to protect  the rights of the holder of this  Debenture;
provided  that no  such  adjustment  shall  increase  the  Conversion  Price  as
otherwise  determined  pursuant to this  Section  2(g) or decrease the number of
shares of Common Stock issuable upon conversion of this Debenture.

               (iii)  Immediately  upon any adjustment of the Conversion  Price,
the Company shall give written notice  thereof to the holder of this  Debenture,
setting  forth in  reasonable  detail and  certifying  the  calculation  of such
adjustment.

          (h) The Company  covenants  that it will at all times reserve and keep
available  out of its  authorized  Common  Stock,  solely  for  the  purpose  of
effecting  the  conversion  of this  Debenture,  such number of shares of Common
Stock  as shall  from  time to time be  issuable  upon  the  conversion  of this
Debenture;  and if at any time the number of authorized  but unissued and issued
but not outstanding  shares of the Common Stock, on a fully diluted basis, shall
not be sufficient to effect the  conversion of this  Debenture at the Conversion
Price then in effect,  the  Company  will take such  corporate  action as may be
necessary to increase its authorized but unissued or issued but not  outstanding
shares of the Common Stock to such number of shares as shall be  sufficient  for
such purpose.  The Company covenants that all shares of Common Stock which shall
be so issuable, when issued upon conversion of this Debenture, shall be duly and
validly issued, fully-paid and non-assessable. If at any time a holder submits a
Conversion Notice, the Company does not have sufficient  authorized but unissued
shares of Common Stock  available to effect such  conversion in accordance  with
the  provisions of this Section 2 (a  "Conversion  Default"),  the Company shall


                                       4
<PAGE>


issue to the holder all of the shares of Common  Stock  which are  available  to
effect  such  conversion.  The  number  of  shares  included  in the  Notice  of
Conversion  which exceeds the amount which is then  convertible  into  available
shares of Common Stock (the "Excess Amount") shall,  notwithstanding anything to
the  contrary  contained  herein,  not  be  convertible  into  Common  Stock  in
accordance  with the terms hereof until (and at the holder's  option at any time
after) the date additional  shares of Common Stock are authorized by the Company
to permit such conversion, at which time the Conversion Price in respect thereof
shall be the lesser of (i) the Conversion  Price on the Conversion  Default Date
(as defined below) and (ii) the Conversion  Price on the Conversion Date elected
by the holder in respect  thereof.  The Company shall pay to the holder payments
("Conversion  Default  Payments")  for a  Conversion  Default  in the  amount of
(N/365),  multiplied by the sum of the principal  amount of the Debenture sought
to be  converted,  multiplied  by the  Excess  Amount  on the  first  day of the
Conversion Default (the "Conversion Default Date"), multiplied by .36, where N =
the  number  of  days  from  the  Conversion  Default  Date  to  the  date  (the
"Authorization  Date") that the Company authorizes a sufficient number of shares
of Common Stock to effect  conversion of the full amount of the  Debenture.  The
Company  shall send  notice to the  holder of the  authorization  of  additional
shares  of Common  Stock,  the  Authorization  Date and the  amount of  holder's
accrued Conversion Default Payments. The accrued Conversion Default Payments for
each calendar  month shall be paid in cash or shall be  convertible  into Common
Stock at the Conversion Price, at the holder's option, as follows:

               (i) In the event holder elects to take such payment in cash, cash
payment  shall be made to holder by the  fifth  day of the month  following  the
month in which it has accrued; and

               (ii) In the event  holder  elects to take such  payment in Common
Stock,  the holder may convert  such  payment  amount  into Common  Stock at the
Conversion  Price (as in effect at the time of Conversion) at any time after the
fifth day of the month following the month in which it has accrued in accordance
with the terms of this Section 2.

Nothing  herein shall limit the holder's  right to pursue actual damages for the
Company's failure to maintain a sufficient number of authorized shares of Common
Stock, and each holder shall have the right to pursue all remedies  available at
law or in equity (including a decree of specific  performance  and/or injunctive
relief).

          (i)  Notwithstanding  anything to the contrary  herein,  conversion of
this Debenture shall not be permitted, and the Company shall not pay any amounts
due to the holder of this  Debenture in the form of shares of Common  Stock,  if
such conversion or payments would result in the holder of this Debenture  owning
more than 4.99% of the issued and  outstanding  shares of Common Stock following
conversion or payment (such  percentage to be calculated in accordance with Rule
13d-3 promulgated under the Securities Exchange Act of 1934).

          (j) The issuance of  certificates  for shares of the Common Stock upon
the  conversion  of this  Debenture  shall be made without  charge to the holder
hereof for any issuance tax in respect of the issuance of such  certificates  or
other cost incurred by the Company in connection  with such  conversion  and the
related issuance of shares of Common Stock.

                                       5
<PAGE>


     3.  Covenant.  The  Company  agrees at all times  that it will not,  by any
amendment  of  the  Company's   Articles  of   Incorporation,   or  through  any
consolidation, merger, reorganization, transfer of assets, dissolution, issue or
sale of securities or any other voluntary  action,  seek to avoid the observance
or performance  hereof, but will at all times take such actions as are necessary
or appropriate in order to protect the rights of the holder of this Debenture.

     4. Events of Default

          (a) In addition to the Default provisions provided above in respect of
Conversion, an "Event of Default" shall exist if any of the following occurs and
is continuing:

               (i) Failure to make any payment of  principal  or interest on the
Debenture  when such payment is due, other than the final payment due on the Due
Date;

               (ii) Failure to make  payment of all  outstanding  principal  and
interest on the Debenture on the Due Date;

               (iii)  Failure  to  comply  with  any  other  provision  of  this
Debenture and such failure  continues for more than five (5) business days after
the holder hereof has given written notice of such failure to the Company;

               (iv) The Common Stock is not listed or included for  quotation on
The Nasdaq  SmallCap Market System,  The Nasdaq National Market System,  the New
York Stock Exchange or the American Stock Exchange;

               (v) Any levy, seizure,  attachment,  execution or similar process
shall be levied on a material portion of the Company's property; or

               (vi) A receiver, custodian, liquidator or trustee of the Company,
or of any of the  property of the Company,  is appointed by court order;  or the
Company is  adjudicated  bankrupt or  insolvent;  or any of the  property of the
Company is sequestered  by court order;  or a petition to reorganize the Company
under any  bankruptcy,  reorganization  or  insolvency  law is filed against the
Company and is not  dismissed  within sixty (60) days after such filing;  or the
Company files a voluntary  bankruptcy  petition or requesting  reorganization or
arrangement under any provision of any bankruptcy,  reorganization or insolvency
law, or consents to the filing of any petition against it under any such law; or
the Company  makes a general  assignment  for the benefit of its  creditors,  or
admits in writing its  inability to pay its debts  generally as they become due,
or  consents to the  appointment  of a receiver,  trustee or  liquidator  of the
Company or of all or any part of the property of the Company.

          (b) If an Event of Default  specified in Section 4(a)(i) exists,  then
this  Debenture  shall  accrue  additional  interest  on all  unpaid  amounts of
principal  and interest from the date of the Event of Default at a rate equal to
the greater of (i) fifteen  percent  (15%) per annum or (ii) the highest  amount
allowable by law.

                                       6
<PAGE>




          (c) If an Event of Default other than an Event of Default specified in
Section  4(a)(i)  exists,  then the holder of this  Debenture  may  exercise any
right,  power or remedy  conferred  upon it by law,  and shall have the right to
declare by written notice the entire  principal and all interest accrued on such
Debenture to be, and such Debenture  shall thereupon  become,  forthwith due and
payable without any declaration,  presentment,  demand, protest or notice of any
kind. The Company shall forthwith pay to the holder of this Debenture the entire
principal and interest accrued on such Debenture.

     5.  Registration.  The initial  holder of this Debenture is entitled to the
benefit of certain  registration rights in respect of the shares of Common Stock
into which this Debenture may be coverted pursuant to that  Registration  Rights
Agreement dated effective July __, 1998.

     6. Miscellaneous

          (a) Every  maker,  endorser  and  guarantor  of this  Debenture or the
obligation  represented by this Debenture waives  presentment,  demand,  notice,
protest  and all other  demands or notices,  in  connection  with the  delivery,
acceptance, endorsement,  performance, default or enforcement of this Debenture,
assents to any and all extensions or postponements of the time of payment or any
other indulgences,  including without limitation, the release or substitution of
collateral,  and  agrees  to be  bound  by  all of the  terms  contained  in the
Debenture.

          (b) No delay or omission by the holder hereof in exercising  any right
or remedy  hereunder  shall  constitute a waiver of any such right or remedy.  A
waiver on one occasion shall not operate as a bar to or waiver of any such right
or remedy on any future occasion.

          (c) The  Company  shall  pay all  reasonable  costs  and  expenses  of
collection,  including attorney's fees, incurred or paid by the holder hereof in
enforcing this Debenture and the obligations evidenced hereby.

          (d) This  Debenture  may be amended  only by written  agreement of the
Company and the holder hereof.

          (e) This  Debenture  is  governed by the laws of the State of Colorado
and is executed as a sealed instrument as of the date first above written.


                                       7
<PAGE>



     IN WITNESS  WHEREOF,  the Company has caused this  Debenture to be executed
and  delivered  by its duly  authorized  officer  as of the day and  year  first
written above.


                                           MEDICAL DYNAMICS, INC.


                                           By:__________________________________
                                           Title:_______________________________




                                       8
<PAGE>


                             MEDICAL DYNAMICS, INC.
                             CONVERTIBLE DEBENTURE
                              NOTICE OF CONVERSION


MEDICAL DYNAMICS, INC.
99 Iverness Drive East
Englewood, CO  80112

     The  undersigned   hereby  elects  to  convert   $_______________   of  the
Convertible  Debenture  represented by the within Convertible Debenture for, and
to  acquire  thereunder  _______________  shares  of Common  Stock  ("Conversion
Shares") as  provided  for  therein,  and  requests  that  certificates  for the
Conversion Shares be issued as follows:

                           --------------------------------
                           Name
                           --------------------------------
                           Address
                           --------------------------------

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

                           --------------------------------
                           Federal Tax Identification No.
                           or Social Security No.

and, if the amount of the principal of the Convertible Debenture being converted
hereby shall not be all of the principal amount of such  Convertible  Debenture,
that a new Convertible Debenture or the balance of such Convertible Debenture be
issued forthwith to the holder or the undersigned's  Assignee as below indicated
and delivered to the address stated below. The undersigned hereby represents and
warrants that sales of the  Conversion  Shares will be made only pursuant to the
Prospectus  covering the registered resale of the Conversion Shares, and that it
will comply with all applicable prospectus delivery requirements.

Dated:___________________, ____

                                    Signature:______________________________

                                              ------------------------------
                                              Name (please print)
                                              ------------------------------
                                              Address
                                              ------------------------------

                                              ------------------------------
                                            Federal Identification or Soc Sec #

                                       9




                         REGISTRATION RIGHTS AGREEMENT
                         -----------------------------


     This Registration Rights Agreement (the "Agreement") is made and entered as
of this ____ day of July, 1998 by and between Medical Dynamics, Inc., a Colorado
corporation  (the  "Company")  and The Tail Wind  Fund,  Ltd.  (the  "Investor")
pursuant  to the  Purchase  Agreement  of even date  herewith by and between the
Company and the Investor (the "Purchase Agreement").

     The parties hereby agree as follows:

     1. Certain Definitions

     As used in this  Agreement,  the  following  terms shall have the following
meanings:

     "Common Stock" shall mean the Common Stock,  par value $.001 per share,  of
the Company.

     "Debenture"  means  the  Debentures  issued  or  issuable  to the  Investor
pursuant to the Purchase Agreement.

     "Prospectus"  shall  mean  the  prospectus  included  in  any  Registration
Statement,  as amended or supplemented by any prospectus supplement with respect
to the  terms of the  offering  of any  portion  of the  Registrable  Securities
covered  by  such  Registration  Statement  and  by  all  other  amendments  and
supplements  to the  prospectus,  including  post-effective  amendments  and all
material incorporated by reference in such prospectus.

     "Register," "registered" and "registration" refer to a registration made by
preparing and filing a registration  statement or similar document in compliance
with the  1933 Act (as  defined  below),  and the  declaration  or  ordering  of
effectiveness of such registration statement or document.

     "Registrable Securities" shall mean (i) the Common Stock issued or issuable
upon the conversion of the Debenture, (ii) the Common Stock issued as payment of
principal or accrued and unpaid interest on the Debentures (the number of shares
to be estimated for purposes of  registration),  (iii) the Common Stock acquired
upon the  exercise  of the  Warrants,  and (iv) any Common  Stock of the Company
issued as (or issuable upon the conversion or exercise of any warrant,  right or
other security which is issued as) a dividend or other distribution with respect
to, or in exchange for or in replacement of, such Common Stock, excluding in all
cases, however, any Registrable  Securities sold by a person in a transaction in
which its rights under this Agreement are not assigned.


<PAGE>



     "Registration  Statement"  shall  mean any  registration  statement  of the
Company that covers any of the Registrable Securities pursuant to the provisions
of this Agreement, including the Prospectus,  amendments and supplements to such
Registration Statement,  including post-effective  amendments,  all exhibits and
all material incorporated by reference in such Registration Statement.

     "SEC" means the U.S. Securities and Exchange Commission.

     "1933 Act" means the Securities Act of 1933, as amended,  and the rules and
regulations promulgated thereunder.

     "1934 Act" means the Securities  Exchange Act of 1934, as amended,  and the
rules and regulations promulgated thereunder.

     "Warrant"  means the Warrant to purchase  shares of Common  Stock issued to
the Investor pursuant to the Purchase Agreement.

     2. Registration.

          (a)  Registration  Statement.  Promptly  following  the closing of the
transactions contemplated by the Purchase Agreement (the "Closing Date") (but no
later than thirty days after the Closing  Date),  the Company  shall prepare and
file with the SEC a  registration  statement on Form S-3 (or, if Form S-3 is not
then available to the Company, on such form of registration statement as is then
available to effect such a registration of the Registrable  Securities,  subject
to the Investor's  consent)  covering the resale of the Registrable  Securities.
Such Registration  Statement, to the extent allowable under the 1933 Act and the
Rules  promulgated  thereunder  (including  rule  416),  shall  state  that such
Registration  Statement  also covers  such  indeterminate  number of  additional
shares of Common Stock as may become  issuable upon conversion of the Debentures
to prevent  dilution  resulting  from stock splits,  stock  dividends or similar
transactions  or by reason of changes in the Conversion  Price of the Debentures
in  accordance  with the terms  thereof.  No securities  other than  Registrable
Securities shall be included in the Registration  Statement  without the consent
of the Investor.  The  Registration  Statement (and each amendment or supplement
thereto,  and each request for acceleration of  effectiveness  thereof) shall be
provided to (and subject to the approval of) the Investor and its counsel  prior
to its filing or other submission.

          (b) Expenses.  The Company will pay all expenses  associated  with the
registration,  excluding discounts,  commissions, fees of underwriters,  selling
brokers,  dealer managers or similar securities industry  professionals relating
to the  distribution  of the  Registrable  Securities,  and reasonable  fees and
expenses of counsel to the Investor.

          (c) Effectiveness.

               (i) The  Company  shall  use  its  best  efforts  to  obtain  the
effectiveness of the Registration  Statement as soon as practicable.  If (A) the
Registration  Statement  is not declared  effective  by the SEC  within 120 days
following the date hereof (the "Registration  Date"), (B) after the Registration


                                        2

<PAGE>


Statement has been declared  effective by the SEC, sales cannot be made pursuant
to the  Registration  Statement  (by reason of a stop  order,  or the  Company's
failure to update the  Registration  Statement),  or (C) the Common Stock is not
listed or included  for  quotation on the Nasdaq  SmallCap  Market  System,  The
Nasdaq National Market System, the New York Stock Exchange or the American Stock
Exchange,  then the Company will make  payments to the  Investor,  as liquidated
damages  and  not as a  penalty,  in an  amount  equal  to 2% of  the  aggregate
principal  amount of the Debenture for each month or portion  thereof  following
the Registration  Date during which the registration is not effective  (referred
to herein as the "Blackout  Period") (which remedy shall not be exclusive of any
other  remedies  available  at law or in  equity).  The  Company  shall bear all
reasonable  fees or costs incurred by the Investor for legal counsel as a result
of the filing of any  post-effective  amendments to the Registration  Statement.
The amounts  payable as liquidated  damages  pursuant to this paragraph shall be
payable  in lawful  money of the  United  States  on the last day of each  month
during the Blackout Period.

               (ii) The Company may  terminate or suspend  effectiveness  of any
registration contemplated by this Section one time for a period of not more than
30 days if the Company shall deliver to the Investor a certificate signed by the
President of the Company  stating that, in the good faith  judgment of the Board
of  Directors  of the  Company,  it would (A) be  seriously  detrimental  to the
business of the Company for such registration to be effected or remain effective
at such time,  (B)  interfere  with any proposed or pending  material  corporate
transaction  involving the Company or any of its subsidiaries,  or (C) result in
any premature disclosure thereof.

          (d) Underwritten  Offering. If any offering pursuant to a Registration
Statement pursuant to Section 2(a) hereof involves an underwritten offering, the
Investor  shall have the right to select  one legal  counsel  and an  investment
banker and  manager to  administer  the  offering,  which  investment  banker or
manager shall be reasonably satisfactory to the Company.

     3. Company Obligations. The Company will use its best efforts to effect the
registration and the resale of the Registrable Securities in accordance with the
intended method of disposition  thereof,  and pursuant thereto the Company will,
as expeditiously as possible:

          (a) use  its  reasonable  best  efforts  to  cause  such  Registration
Statement to become effective and to remain continuously  effective for a period
which  will  terminate  when  all   Registrable   Securities   covered  by  such
Registration Statement, as amended from time to time, have been sold;

          (b) prepare and file with the SEC such  amendments and  post-effective
amendments to the Registration  Statement and the Prospectus as may be necessary
to keep the Registration Statement effective for the period specified in Section
3(a) and to  comply  with the  provisions  of the 1933 Act and the 1934 Act with
respect to the distribution of all Registrable  Securities;  provided that, at a
time reasonably  prior to the filing of a Registration  Statement or Prospectus,
or any  amendments  or  supplements  thereto,  the Company  will  furnish to the
Investor copies of all documents  proposed to be filed,  which documents will be
subject to the comments of the Investor and its counsel;


                                        3

<PAGE>



          (c) permit a single  firm of counsel  designated  by the  Investor  to
review the Registration  Statement and all amendments and supplements  thereto a
reasonable  period of time prior to their  filing with the SEC, and not file any
document in a form to which such counsel reasonably objects;

          (d) furnish to the Investor and its legal  counsel (i) promptly  after
the same is prepared and publicly  distributed,  filed with the SEC, or received
by the  Company,  one  copy of the  Registration  Statement  and  any  amendment
thereto,  each  preliminary  prospectus  and  Prospectus  and each  amendment or
supplement  thereto,  and each letter  written by or on behalf of the Company to
the SEC or the staff of the SEC, and each item of correspondence from the SEC or
the  staff of the SEC,  in each case  relating  to such  Registration  Statement
(other than any portion of any thereof which contains  information for which the
Company has sought confidential treatment),  and (ii) such number of copies of a
Prospectus,   including  a  preliminary  prospectus,   and  all  amendments  and
supplements  thereto and such other  documents as such  Investor may  reasonably
request in order to facilitate  the  disposition of the  Registrable  Securities
owned by such Investor;

          (e) in the event the Investor  selects  underwriters for the offering,
the Company shall enter into and perform its  obligations  under an underwriting
agreement, in usual and customary form, including, without limitation, customary
indemnification  and  contribution  obligations,  with the  underwriters of such
offering;

          (f) at the request of the Investor,  the Company shall furnish, on the
date that  Registrable  Securities are delivered to an underwriter,  if any, for
sale in connection  with the  Registration  Statement or, if such securities are
not being sold by an underwriter,  on the date of  effectiveness  thereof (i) an
opinion,  dated as of such date,  from  counsel  representing  the  Company  for
purposes of such  Registration  Statement,  in form,  scope and  substance as is
customarily  given  in  an  underwritten  public  offering,   addressed  to  the
underwriter,  if any, and the Investor and (ii) a letter,  dated such date, from
the Company's  independent certified public accountants in form and substance as
is customarily given by independent certified public accountants to underwriters
in an underwritten public offering,  addressed to the underwriters,  if any, and
the Investors;

          (g) make  reasonable  effort to prevent the issuance of any stop order
or other  suspension of effectiveness  and, if such order is issued,  obtain the
withdrawal of any such order at the earliest possible moment;

          (h) furnish to the  Investor at least five copies of the  Registration
Statement  and  any  post-effective   amendment  thereto,   including  financial
statements and schedules,  all documents  incorporated  therein by reference and
all exhibits (including those incorporated by reference);

                                        4

<PAGE>


          (i)  deliver  to  the  Investor  as  many  copies  of  the  Prospectus
(including each preliminary  prospectus) and any amendment or supplement thereto
as the Investor may reasonably request in order to facilitate the disposition of
the Registrable Securities;

          (j) prior to any public  offering of Registrable  Securities,  use its
reasonable  best efforts to register or qualify or  cooperate  with the Investor
and its counsel in connection  with the  registration or  qualification  of such
Registrable  Securities for offer and sale under the securities or blue sky laws
of such jurisdictions as the Investor  reasonably requests in writing and do any
and all other  reasonable  acts or things  necessary  or advisable to enable the
distribution in such jurisdictions of the Registrable  Securities covered by the
Registration  Statement;  provided  that the  Company  will not be  required  to
qualify  generally  to do business in any  jurisdiction  where it is not then so
qualified  or to take any action  which would  subject it to general  service of
process in any such jurisdiction where it is not then so subject;

          (k) cause  all  Registrable  Securities  covered  by the  Registration
Statement to be listed on each securities exchange, interdealer quotation system
or other  market on which  similar  securities  issued by the  Company  are then
listed;

          (l)  immediately  notify the  Investor  at any time when a  Prospectus
relating  thereto is required to be delivered  under the  Securities  Act,  upon
discovery  that,  or upon the  happening of any event as a result of which,  the
Prospectus included in such Registration  Statement, as then in effect, includes
an untrue  statement  of a  material  fact or omits to state any  material  fact
required to be stated  therein or necessary to make the  statements  therein not
misleading in the light of the circumstances  then existing,  and at the request
of any such  holder,  promptly  prepare and furnish to such holder a  reasonable
number of copies of a supplement to or an amendment of such Prospectus as may be
necessary so that, as thereafter delivered to the purchasers of such Registrable
Securities,  such Prospectus shall not include an untrue statement of a material
fact or omit to state a material fact required to be stated therein or necessary
to make the statements  therein not misleading in the light of the circumstances
then existing; and

          (m) otherwise use its best efforts to comply with all applicable rules
and  regulations of the SEC under the 1933 Act and the 1934 Act, take such other
actions as may be reasonably  necessary to facilitate  the  registration  or the
disposition of the Registrable  Securities hereunder;  and make available to its
security  holders,  as soon as  reasonably  practicable,  but not later than the
Availability Date (as defined below), an earnings statement covering a period of
at least twelve  months,  beginning  after the effective  date of the applicable
Registration Statement, which earnings statement shall satisfy the provisions of
subsection  11(a) of the 1933 Act (for  the  purpose  of this  subsection  3(m),
"Availability  Date" means the 45th day  following  the end of the fourth fiscal
quarter that includes the effective date of such Registration Statement,  except
that, if such fourth fiscal quarter is the last quarter of the Company's  fiscal
year, "Availability Date" means the 90th day after the end of such fourth fiscal
quarter).



                                        5

<PAGE>



     4. Obligations of the Investor.

          (a) It  shall  be a  condition  precedent  to the  obligations  of the
Company to complete the registration  pursuant to this Agreement with respect to
the  Registrable  Securities that the Investor shall furnish to the Company such
information  regarding  itself,  the  Registrable  Securities held by it and the
intended method of disposition of the Registrable Securities held by it as shall
be reasonably required to effect the registration of such Registrable Securities
and shall execute such  documents in connection  with such  registration  as the
Company may  reasonably  request.  At least three (3) business days prior to the
first anticipated filing date of the Registration  Statement,  the Company shall
notify the Investor of the information the Company requires from the Investor if
the Investor  elects to have any of the Registrable  Securities  included in the
Registration Statement.

          (b) The Investor,  by its  acceptance of the  Registrable  Securities,
agrees to cooperate  with the Company as reasonably  requested by the Company in
connection  with  the  preparation  and  filing  of the  Registration  Statement
hereunder,  unless  the  Investor  has  notified  the  Company in writing of its
election  to exclude all of the  Registrable  Securities  from the  Registration
Statement.

          (c) In the event the Investor  determines to engage the services of an
underwriter, the Investor agrees to enter into and perform its obligations under
an  underwriting  agreement,  in usual and customary  form,  including,  without
limitation,  customary  indemnification and contribution  obligations,  with the
managing  underwriter  of such  offering  and take  such  other  actions  as are
reasonably  required in order to expedite or facilitate the  dispositions of the
Registrable Securities.

          (d) The  Investor  agrees  that,  upon  receipt of any notice from the
Company of the happening of any event  rendering the  Registration  Statement no
longer  effective,  the Investor will  immediately  discontinue  disposition  of
Registrable  Securities  pursuant to the  Registration  Statement  covering such
Registrable  Securities  until  the  Investor's  receipt  of the  copies  of the
supplemented  or amended  prospectus  filed with the SEC and declared  effective
and, if so directed by the Company,  the Investor  shall  deliver to the Company
(at the  expense of the  Company)  or  destroy  (and  deliver  to the  Company a
certificate  of  destruction)  all copies in the  Investor's  possession  of the
prospectus covering the Registrable Securities current at the time of receipt of
such notice.

          (e) The Investor may not participate in any underwritten  registration
hereunder  unless it (i) agrees to sell the Registrable  Securities on the basis
provided in any  underwriting  arrangements  in usual and customary form entered
into by the Company,  (ii) completes and executes all questionnaires,  powers of
attorney,  indemnities,  underwriting  agreements and other documents reasonably
required under the terms of such underwriting arrangements,  and (iii) agrees to
pay its pro rata share of all  underwriting  discounts and  commissions  and any
expenses in excess of those payable by the Company pursuant to the terms of this
Agreement.

                                        6

<PAGE>

     5. Indemnification.

          (a)  Indemnification  by Company.  The Company agrees to indemnify and
hold  harmless,  to the  fullest  extent  permitted  by law  the  Investor,  its
officers,  directors,  partners and  employees  and each person who controls the
Investor  (within  the  meaning of the 1933 Act)  against  all  losses,  claims,
damages,   liabilities,   costs  (including,   without  limitation,   reasonable
attorney's  fees) and  expenses  caused  by (i) any  untrue  or  alleged  untrue
statement of a material fact contained in any Registration Statement, Prospectus
or any  preliminary  prospectus or any  amendment or  supplement  thereto or any
omission or alleged  omission to state  therein a material  fact  required to be
stated  therein or  necessary  to make the  statements  therein not  misleading,
except insofar as the same are based upon any  information  furnished in writing
to the Company by the Investor, expressly for use therein, or (ii) any violation
by the  Company  of any  federal,  state  or  common  law,  rule  or  regulation
applicable  to the  Company  in  connection  with  any  Registration  Statement,
Prospectus  or any  preliminary  prospectus,  or  any  amendment  or  supplement
thereto, and shall reimburse, as incurred, each of the foregoing persons for any
legal  and  any  other   expenses   reasonably   incurred  in  connection   with
investigating  or  defending  any such claims.  The  foregoing is subject to the
condition  that,  insofar  as the  foregoing  indemnities  relate to any  untrue
statement,  alleged untrue  statement,  omission or alleged omission made in any
preliminary  prospectus  or  Prospectus  which is  eliminated or remedied in any
Prospectus or amendment or supplement thereto,  the above indemnity  obligations
of the Company shall not inure to the benefit of any indemnified party if a copy
of such final  Prospectus  or  amendment  or  supplement  thereto  had been made
available  to  such  indemnified  party  and  was  not  sent  or  given  by such
indemnified  party at or  prior to the time  such  action  is  required  of such
indemnified  party  by the  1933  Act  and if  delivery  of such  Prospectus  or
amendment or  supplement  thereto  would have  eliminated  (or been a sufficient
defense  to) any  liability  of such  indemnified  party  with  respect  to such
statement  or omission.  Indemnity  under this Section 5(a) shall remain in full
force and effect  regardless  of any  investigation  made by or on behalf of any
indemnified  party and shall survive the permitted  transfer of the  Registrable
Securities.

          (b) Indemnification by Holder of Registrable Securities. In connection
with any registration pursuant to the terms of this Agreement, the Investor will
furnish to the Company in writing  such  information  as the Company  reasonably
requests  concerning the Investor or the proposed manner of distribution for use
in  connection  with any  Registration  Statement  or  Prospectus  and agrees to
indemnify  and hold  harmless,  to the  fullest  extent  permitted  by law,  the
Company,  its  directors  and  officers and each person who controls the Company
(within  the  meaning of the 1933 Act)  against  any  losses,  claims,  damages,
liabilities and expense  resulting from any untrue  statement of a material fact
or any  omission of a material  fact  required to be stated in the  Registration
Statement  or  Prospectus  or  preliminary  prospectus  or necessary to make the
statements therein not misleading,  to the extent, but only to the extent,  that
such untrue  statement or omission is contained in any information  furnished in
writing by the holder of Registrable  Securities to the Company specifically for
inclusion in such Registration Statement or Prospectus and that such information
was substantially  relied upon by the Company in preparation of the Registration
Statement or  Prospectus or any  amendment or  supplement  thereto.  In no event
shall the  liability of the Investor be greater in amount than the dollar amount
of the  proceeds  (net of all expense  paid by such holder and the amount of any
damages such holder has otherwise  been required to pay by reason of such untrue
statement or omission) received by the Investor upon the sale of the Registrable
Securities giving rise to such indemnification obligation.


                                        7

<PAGE>



          (c) Conduct of  Indemnification  Proceedings.  Any person  entitled to
indemnification hereunder shall (i) give prompt notice to the indemnifying party
of any claim with respect to which it seeks indemnification and (ii) permit such
indemnifying  party to assume the defense of such claim with counsel  reasonably
satisfactory  to the  indemnified  party;  provided that any person  entitled to
indemnification hereunder shall have the right to employ separate counsel and to
participate  in the  defense of such  claim,  but the fees and  expenses of such
counsel shall be at the expense of such person unless (a) the indemnifying party
has agreed to pay such fees or  expenses,  or (b) the  indemnifying  party shall
have  failed to assume the defense of such claim and employ  counsel  reasonably
satisfactory  to such  person  or (c) in the  reasonable  judgment  of any  such
person,  based upon written  advice of its  counsel,  a conflict of interest may
exist between such person and the indemnifying party with respect to such claims
(in which case, if the person  notifies the  indemnifying  party in writing that
such person elects to employ separate counsel at the expense of the indemnifying
party, the indemnifying  party shall not have the right to assume the defense of
such claim on behalf of such person); and provided, further, that the failure of
any  indemnified  party to give notice as provided  herein shall not relieve the
indemnifying party of its obligations hereunder,  except to the extent that such
failure to give notice shall materially  adversely affect the indemnifying party
in the  defense  of any such  claim or  litigation.  It is  understood  that the
indemnifying  party shall not, in  connection  with any  proceeding  in the same
jurisdiction,  be liable for fees or expenses of more than one separate  firm of
attorneys  (in addition to local  counsel) at any time for all such  indemnified
parties.  No indemnifying party will, except with the consent of the indemnified
party,  consent to entry of any judgment or enter into any settlement  that does
not  include as an  unconditional  term  thereof  the giving by the  claimant or
plaintiff to such  indemnified  party of a release from all liability in respect
to such claim or litigation.

          (d) Contribution.  If for any reason the indemnification  provided for
in the preceding  clauses (a) and (b) is unavailable to an indemnified  party or
insufficient  to hold it harmless,  other than as expressly  specified  therein,
then the  indemnifying  party shall  contribute to the amount paid or payable by
the indemnified  party as a result of such loss,  claim,  damage or liability in
such  proportion  as is  appropriate  to  reflect  the  relative  fault  of  the
indemnified  party and the  indemnifying  party,  as well as any other  relevant
equitable  considerations.  No  person  guilty of  fraudulent  misrepresentation
within  the  meaning  of  Section  11(f) of the 1933 Act  shall be  entitled  to
contribution from any person not guilty of such fraudulent misrepresentation. In
no event shall the contribution obligation of a holder of Registrable Securities
be greater in amount than the dollar amount of the proceeds (net of all expenses
paid by such holder and the amount of any damages such holder has otherwise been
required to pay by reason of such untrue or alleged untrue statement or omission
or alleged omission) received by it upon the sale of the Registrable  Securities
giving rise to such contribution obligation.

                                        8

<PAGE>



     6. Miscellaneous.

          (a)  Amendments  and Waivers.  This  Agreement  may be amended and the
Company may take any action herein prohibited, or omit to perform any act herein
required to be  performed  by it, only if the Company  shall have  obtained  the
written consent to such  amendment,  action or omission to act, of the Investor.
Notwithstanding the foregoing,  this Agreement shall automatically be amended in
accordance with the provisions of this Section 6.

          (b)  Notices.  All notices and other  communications  provided  for or
permitted hereunder shall be made as set forth in the Purchase Agreement.

          (c) Assignments and Transfers by Investor.  This Agreement and all the
rights  and  obligations  of the  Investor  hereunder  may  not be  assigned  or
transferred  to any  transferee  or  assignee  except as set forth  herein.  The
Investor may make such  assignment or transfer to any  transferee or assignee of
any Registrable  Securities,  provided, that (i) such transfer is made expressly
subject to this  Agreement and the  transferee  agrees in writing to be bound by
the terms and conditions  hereof,  and (ii) the Company is provided with written
notice of such assignment.

          (d) Assignments  and Transfers by the Company.  This Agreement may not
be assigned by the Company without the prior written consent of Investor, except
that without the prior written  consent of the  Investor,  but after notice duly
given,  the Company shall assign its rights and delegate its duties hereunder to
any  successor-in-interest  corporation,  and such  successor-in-interest  shall
assume such rights and duties,  in the event of a merger or consolidation of the
Company  with or into another  corporation,  or any merger or  consolidation  of
another  corporation  with  or  into  the  Company  which  results  directly  or
indirectly  in an aggregate  change in the ownership or control of more than 50%
of the voting rights of the equity securities of the Company, or the sale of all
or substantially all of the Company's assets.

          (e)  Benefits  of the  Agreement.  The  terms and  conditions  of this
Agreement  shall  inure to the  benefit  of and be binding  upon the  respective
permitted  successors  and assigns of the  parties.  Nothing in this  Agreement,
express or implied,  is intended to confer upon any party other than the parties
hereto  or  their  respective  successors  and  assigns  any  rights,  remedies,
obligations,  or  liabilities  under or by reason of this  Agreement,  except as
expressly provided in this Agreement.

          (f)  Counterparts.  This  Agreement  may be  executed  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.

          (g)  Titles and  Subtitles.  The  titles  and  subtitles  used in this
Agreement  are  used  for  convenience  only  and  are not to be  considered  in
construing or interpreting this Agreement.

                                        9

<PAGE>


          (h)  Expenses.  If any  action  at law or in equity  is  necessary  to
enforce or interpret the terms of this Agreement,  the prevailing party shall be
entitled to reasonable  attorneys'  fees,  costs and necessary  disbursements in
addition to any other relief to which such party may be entitled.

          (i) Severability. If one or more provisions of this Agreement are held
to be unenforceable  under applicable law, such provision shall be excluded from
this Agreement and the balance of this Agreement shall be interpreted as if such
provision  were so excluded  and shall be  enforceable  in  accordance  with its
terms.

          (j) Further Assurances. The Parties shall execute and deliver all such
further  instruments  and  documents  and  take all such  other  actions  as may
reasonably be required to carry out the transactions  contemplated hereby and to
evidence the fulfillment of the agreements herein contained.

          (k) Entire  Agreement.  This Agreement is intended by the parties as a
final  expression of their agreement and intended to be a complete and exclusive
statement of the agreement and understanding of the parties hereto in respect of
the  subject  matter  contained  herein.  This  Agreement  supersedes  all prior
agreements and  understandings  between the parties with respect to such subject
matter.

          (l) Applicable Law. This Agreement shall be governed by, and construed
in  accordance  with,  the  laws of the  State of  Colorado  without  regard  to
principles of conflicts of law.


     IN WITNESS WHEREOF, the parties have executed this Agreement as of the date
first written above.


The Company:                             MEDICAL DYNAMICS, INC.


                                                  By:_________________________
                                                  Name:
                                                  Title:



The Investor:                            THE TAIL WIND FUND, LTD.


                                                  By:_________________________
                                                  Name:
                                                  Title:


                                       10




     THIS WARRANT HAS NOT BEEN  REGISTERED  UNDER THE SECURITIES ACT OF 1933, AS
AMENDED,  AND MAY NOT BE  SOLD,  TRANSFERRED,  PLEDGED  OR  HYPOTHECATED  IN THE
ABSENCE OF A REGISTRATION  STATEMENT  COVERING THIS WARRANT UNDER SAID ACT OR AN
EXEMPTION FROM REGISTRATION UNDER SAID ACT.

     VOID AFTER 5:00 P.M. MOUNTAIN TIME ON JULY __, 2003 ("EXPIRATION DATE").


                             MEDICAL DYNAMICS, INC.

                      WARRANT TO PURCHASE 110,000 SHARES OF
                     COMMON STOCK, PAR VALUE $.001 PER SHARE

     This is to certify  that,  for VALUE  RECEIVED,  The Tail Wind  Fund,  Ltd.
("Warrantholder"),  is entitled to purchase,  subject to the  provisions of this
Warrant, from Medical Dynamics, Inc., a Colorado corporation ("Company"),  up to
110,000  shares of the Company's  Common  Stock,  par value $.001 per share (the
"Common  Stock"),  at any time not later than 5:00 P.M.,  Mountain  time, on the
Expiration  Date,  at an exercise  price per share equal to $2.58 (the  "Warrant
Price").  The number of shares of Common Stock purchasable upon exercise of this
Warrant  (the  "Warrant  Shares")  and the  Warrant  Price  shall be  subject to
adjustment from time to time as described herein.

     Section 1. Registration.  The Company shall maintain books for the transfer
and registration of the Warrant.  Upon the initial issuance of the Warrant,  the
Company shall issue and register the Warrant in the name of the Warrantholder.

     Section 2. Transfers.  As provided  herein,  the Warrant may be transferred
only pursuant to a  registration  statement  filed under the  Securities  Act of
1933,  as  amended   ("Securities   Act")  or  an  exemption  from  registration
thereunder.  Subject to such restrictions,  the Company shall transfer from time
to time,  the Warrant,  upon the books to be  maintained by the Company for that
purpose, upon surrender thereof for transfer properly endorsed or accompanied by
appropriate  instructions for transfer upon any such transfer, and a new Warrant
shall be issued to the transferee and the surrendered  Warrant shall be canceled
by the Company.

     Section 3.  Exercise  of Warrant.  Subject to the  provisions  hereof,  the
Warrantholder  may  exercise  the  Warrant  in whole or in part at any time upon
surrender of the Warrant,  together with  delivery of the duly executed  Warrant
exercise form attached hereto (the "Exercise Agreement"),  to the Company during
normal business hours on any business day at the Company's  principal  executive
offices (or such other  office or agency of the Company as it may  designate  by
notice to the holder  hereof),  and upon (i) payment to the Company in cash,  by
certified  or  official  bank check or by wire  transfer  for the account of the
Company of the Warrant  Price for the Warrant  Shares  specified in the Exercise


<PAGE>


Agreement or (ii) delivery to the Company of a written  notice of an election to
effect a "Cashless Exercise" (as defined below) for the Warrant Shares specified
in the Exercise Agreement. The Warrant Shares so purchased shall be deemed to be
issued to the holder  hereof or such holder's  designee,  as the record owner of
such shares, as of the close of business on the date on which this Warrant shall
have been surrendered (or evidence of loss, theft or destruction  thereof),  the
completed Exercise  Agreement shall have been delivered,  and payment shall have
been made for such  shares  as set forth  above.  Certificates  for the  Warrant
Shares so purchased,  representing  the aggregate  number of shares specified in
the  Exercise  Agreement,  shall be  delivered  to the  holder  hereof  within a
reasonable  time, not exceeding two (2) business days,  after this Warrant shall
have  been  so  exercised.  The  certificates  so  delivered  shall  be in  such
denominations  as may be requested by the holder  hereof and shall be registered
in the name of such  holder or such  other name as shall be  designated  by such
holder.  If this Warrant shall have been  exercised only in part,  then,  unless
this  Warrant has expired,  the Company  shall,  at its expense,  at the time of
delivery of such certificates,  deliver to the holder a new Warrant representing
the number of shares with respect to which this Warrant shall not then have been
exercised.

     To effect a Cashless Exercise,  the holder shall submit to the Company with
the  Exercise  Agreement,  written  notice of the  holder's  intention to do so,
including  a  calculation  of the number of shares of Common  Stock to be issued
upon  such  exercise  in  accordance  with the terms  hereof.  In the event of a
Cashless Exercise, in lieu of paying the Warrant Price in cash, the holder shall
surrender  this Warrant for that number of shares of Common Stock  determined by
multiplying the number of Warrant Shares to which it would otherwise be entitled
by a fraction,  the numerator of which shall be the difference  between the then
current Market Price per share of the Common Stock and the Exercise  Price,  and
the denominator of which shall be the then current Market Price per share of the
Common Stock. For this purpose,  the "Market Price" of the Common Stock shall be
the closing  price of the Common  Stock on the trading day first  preceding  the
date of the Exercise Agreement.

     To the extent  that any Warrant  Shares  remain  outstanding  at 5:01 P.M.,
Mountain  time  on  July  __,  2003,  such  outstanding   Warrant  Shares  shall
automatically  expire and be of no further  force and  effect,  and the  holders
thereof shall have no further right to exercise or transfer the same.

     Section 4. Compliance with the Securities Act of 1933. Neither this Warrant
nor the Common Stock issued upon exercise  hereof nor any other security  issued
or  issuable  upon  exercise  of this  Warrant  may be offered or sold except as
provided in this agreement and in conformity with the Securities Act of 1933, as
amended,  and then only  against  receipt of an agreement of such person to whom
such offer of sale is made to comply with the  provisions of this Section 4 with
respect to any resale or other  disposition  of such  security.  The Company may
cause the legend set forth on the first page of this  Warrant to be set forth on
each Warrant or similar legend on any security  issued or issuable upon exercise
of this Warrant, unless counsel for the Company is of the opinion as to any such
security that such legend is unnecessary.


                                        2

<PAGE>


     Section 5.  Payment of Taxes.  The Company will pay any  documentary  stamp
taxes  attributable to the initial  issuance of Warrant Shares issuable upon the
exercise  of the  Warrant;  provided,  however,  that the  Company  shall not be
required to pay any tax or taxes which may be payable in respect of any transfer
involved in the issue or delivery of any  certificates  for Warrant  Shares in a
name other than that of the registered holder of the Warrant in respect of which
such shares are issued,  and in such case,  the Company shall not be required to
issue or deliver any  certificate  for Warrant  Shares or any Warrant  until the
person requesting the same has paid to the Company the amount of such tax or has
established  to the  Company's  satisfaction  that such tax has been  paid.  The
holder shall be responsible  for income taxes due under federal or state law, if
any such tax is due.

     Section 6.  Mutilated  or Missing  Warrants.  In case the Warrant  shall be
mutilated,  lost, stolen, or destroyed,  the Company shall issue in exchange and
substitution of and upon  cancellation of the mutilated  Warrant,  or in lieu of
and  substitution  for the Warrant lost,  stolen or destroyed,  a new Warrant of
like tenor and for the  purchase  of a like number of Warrant  Shares,  but only
upon receipt of evidence  reasonably  satisfactory  to the Company of such loss,
theft or  destruction  of the  Warrant,  and with  respect to a lost,  stolen or
destroyed Warrant, reasonable indemnity or bond, if requested by the Company.

     Section 7. Reservation of Common Stock.  The Company hereby  represents and
warrants that there have been reserved,  and the Company shall at all applicable
times keep reserved,  out of the authorized and unissued  Common Stock, a number
of shares  sufficient  to provide  for the  exercise  of the rights of  purchase
represented by the Warrant,  and the Continental Stock Transfer & Trust Company,
the transfer agent for the Common Stock ("Transfer Agent"), and every subsequent
transfer  agent for the Common  Stock or other shares of the  Company's  capital
stock issuable upon the exercise of any of the right of purchase aforesaid shall
be  irrevocably  authorized  and directed at all times to reserve such number of
authorized  and unissued  shares of Common Stock as shall be requisite  for such
purpose.  The Company agrees that all Warrant Shares issued upon exercise of the
Warrant shall be, at the time of delivery of the  certificates  for such Warrant
Shares, duly authorized, validly issued, fully paid and non-assessable shares of
Common  Stock of the  Company.  The Company  will keep a conformed  copy of this
Warrant on file with the Transfer Agent and with every subsequent transfer agent
for the Common Stock or other shares of the  Company's  capital  stock  issuable
upon the  exercise of the rights of purchase  represented  by the  Warrant.  The
Company  will supply  from time to time the  Transfer  Agent with duly  executed
stock certificates required to honor the outstanding Warrant.

     Section 8. Warrant  Price.  The Warrant  Price,  subject to  adjustment  as
provided in Section 9, shall, if payment is made in cash or by certified  check,
be payable in lawful money of the United States of America.


                                        3

<PAGE>



     Section 9.  Adjustments.  Subject and  pursuant to the  provisions  of this
Section  9, the  Warrant  Price and  number of  Warrant  Shares  subject to this
Warrant  shall  be  subject  to  adjustment  from  time  to  time  as set  forth
hereinafter.  If the adjustment  provisions contained in this Section 9 are less
favorable to the holders of this Warrant than adjustment provisions available to
any other holder (the "Other  Holder") of convertible  securities of the Company
or  warrants,  options or similar  rights  exercisable  for Common  Stock of the
Company with respect to such securities  ("Other  Rights") are to any such Other
Holder, this Warrant shall be immediately and automatically amended, without the
requirement of any action by the holder or the Company, to provide the holder of
this Warrant with adjustment rights at least as favorable as such Other Rights.

          (a) If the  Company  shall at any time or from time to time  while the
Warrant is  outstanding,  pay a dividend  or make a  distribution  on its Common
Stock in shares of Common  Stock,  subdivide  its  outstanding  shares of Common
Stock into a greater number of shares or combine its  outstanding  shares into a
smaller number of shares or issue by  reclassification of its outstanding shares
of  Common  Stock  any  shares  of  its  capital  stock   (including   any  such
reclassification  in  connection  with a  consolidation  or  merger in which the
Company  is the  continuing  corporation),  then the  number of  Warrant  Shares
purchasable  upon  exercise  of the  Warrant  and the  Warrant  Price in  effect
immediately  prior to the date upon which such change  shall  become  effective,
shall be adjusted by the Company so that the Warrantholder thereafter exercising
the Warrant shall be entitled to receive the number of shares of Common Stock or
other capital stock which the  Warrantholder  would have received if the Warrant
had been exercised  immediately  prior to such event.  Such adjustment  shall be
made successively whenever any event listed above shall occur.

          (b) If any  capital  reorganization,  reclassification  of the capital
stock of the  Company,  consolidation  or merger  of the  Company  with  another
corporation,  or sale, transfer or other disposition of all or substantially all
of the Company's properties to another corporation shall be effected, then, as a
condition of such reorganization, reclassification, consolidation, merger, sale,
transfer  or other  disposition,  lawful and  adequate  provision  shall be made
whereby  each  Warrantholder  shall  thereafter  have the right to purchase  and
receive upon the basis and upon the terms and conditions herein specified and in
lieu of the Warrant Shares immediately theretofore issuable upon exercise of the
Warrant,  such shares of stock,  securities  or properties as may be issuable or
payable  with  respect to or in  exchange  for a number of  outstanding  Warrant
Shares equal to the number of Warrant Shares  immediately  theretofore  issuable
upon  exercise  of  the  Warrant,  had  such  reorganization,  reclassification,
consolidation,  merger, sale, transfer or other disposition not taken place, and
in any such case appropriate  provision shall be made with respect to the rights
and  interests  of each  Warrantholder  to the end  that the  provisions  hereof
(including, without limitations,  provision for adjustment of the Warrant Price)
shall  thereafter be applicable,  as nearly  equivalent as may be practicable in
relation to any shares of stock, securities or properties thereafter deliverable
upon the exercise thereof.  The Company shall not effect any such consolidation,
merger,  sale,  transfer or other disposition  unless prior to or simultaneously



                                        4

<PAGE>


with the  consummation  thereof  the  successor  corporation  (if other than the
Company)  resulting  from  such  consolidation  or  merger,  or the  corporation
purchasing or otherwise  acquiring such assets or other appropriate  corporation
or entity shall  assume,  by written  instrument  executed and  delivered to the
Company,  the  obligation to deliver to the holder of the Warrant such shares of
stock,  securities  or assets as, in accordance  with the foregoing  provisions,
such holder may be entitled to  purchase  and the other  obligations  under this
Warrant.

     The  above  provisions  of this  paragraph  (b)  shall  similarly  apply to
successive reorganizations,  reclassifications,  consolidations, mergers, sales,
transfers or other dispositions.

          (c) In case the  Company  shall fix a record  date for the making of a
distribution  to all holders of Common Stock  (including  any such  distribution
made in connection  with a  consolidation  or merger in which the Company is the
continuing  corporation) of evidences of indebtedness or assets (other than cash
dividends or cash distributions  payable out of consolidated  earnings or earned
surplus  or  dividends  or  distributions  referred  to  in  Section  9(a)),  or
subscription  rights or warrants,  the Warrant  Price to be in effect after such
record date shall be  determined  by  multiplying  the  Warrant  Price in effect
immediately  prior to such  record date by a fraction,  the  numerator  of which
shall be the total number of shares of Common Stock  outstanding  multiplied  by
the Market  Price per share of Common Stock (as  determined  pursuant to Section
3),  less the  fair  market  value  (as  determined  by the  Company's  Board of
Directors  in good  faith)  of said  assets  or  evidences  of  indebtedness  so
distributed,  or of such subscription rights or warrants, and the denominator of
which shall be the total number of shares of Common Stock outstanding multiplied
by such current Market Price per share of Common Stock. Such adjustment shall be
made successively whenever such a record date is fixed.

          (d) If the  Company  shall at any time or from time to time  after the
date of issuance  hereof issue or sell in a financing  transaction  (which shall
not  include  any sales or  issuances  of  Common  Stock  after the date  hereof
pursuant  to  contractual  obligations  in effect on the date  hereof),  (A) any
shares of Common Stock for a consideration per share less than the lesser of (i)
the Market  Price (as defined  above) on the date of such  issuance and (ii) the
Warrant  Price,  or (B) any securities  convertible  into shares of Common Stock
("Convertible  Securities")  for which the  conversion or exercise price (which,
for the purposes of this Section 9(d),  shall be the total  obtained by dividing
(x) the total amount received by the Company as  consideration  for the issuance
of such  Convertible  Securities  plus any  amount  payable  to the  Company  on
conversion  or  exercise  thereof,  by (y) the number of shares of Common  Stock
issuable upon the conversion or exercise thereof) is less than the lesser of (i)
the Market  Price (as defined  above) on the date of such  issuance and (ii) the
Warrant Price,  then the Warrant Price shall be reduced to a price equal to 120%
of  such  per  share  consideration,  or  conversion  or  exercise  price.  Such
adjustments shall be made successively whenever such sales are made.



                                        5

<PAGE>



          (e) An adjustment shall become effective  immediately after the record
date in the case of each  dividend or  distribution  and  immediately  after the
effective date of each other event which requires an adjustment.

          (f) In the event that, as a result of an  adjustment  made pursuant to
Section  9(a),  the holder of the Warrant  shall become  entitled to receive any
shares of capital stock of the Company  other than shares of Common  Stock,  the
number of such other shares so receivable  upon exercise of the Warrant shall be
subject  thereafter to adjustment  from time to time in a manner and on terms as
nearly  equivalent as practicable to the provisions  with respect to the Warrant
Shares contained in this Warrant.

          (g)  Shares of Common  Stock  owned by or held for the  account of the
Company or any majority-owned subsidiary shall not be deemed outstanding for the
purpose of any computation under this Agreement.

     Section 10. Fractional Interest. The Company shall not be required to issue
fractions of Warrant Shares upon the exercise of the Warrant. If any fraction of
a Warrant Share would,  except for the  provisions of this Section,  be issuable
upon the exercise of the Warrant (or specified  portions  thereof),  the Company
shall  purchase such fraction for an amount in cash equal to the current  market
value of such fraction based upon the current Market Price (determined  pursuant
to Section 3) of a Warrant Share. All  calculations  under this Section 10 shall
be made to the nearest cent or to the nearest  one-hundredth  of a share, as the
case may be.

     Section 11.  Benefits.  Nothing in this Warrant  shall be construed to give
any person,  firm or corporation  (other than the Company and the Warrantholder)
any legal or equitable right, remedy or claim, it being agreed that this Warrant
shall  be  for  the  sole  and   exclusive   benefit  of  the  Company  and  the
Warrantholder.

     Section  12.  Notices to  Warrantholder.  Upon the  happening  of any event
requiring an adjustment of the Warrant Price,  the Company shall  forthwith give
written  notice  thereof to the  Warrantholder  at the address  appearing in the
records of the  Company,  stating the  adjusted  Warrant  Price and the adjusted
number of  Warrant  Shares  resulting  from  such  event  and  setting  forth in
reasonable  detail  the  method of  calculation  and the facts  upon  which such
calculation is based.  The  certificate of the Company's  independent  certified
public  accountants  shall be  conclusive  evidence  of the  correctness  of any
computation  made,  absent  manifest  error.  Failure to give such notice to the
Warrantholder or any defect therein shall not affect the legality or validity of
the subject adjustment.

     Section 13. Identity of Transfer  Agent.  The Transfer Agent for the Common
Stock is Continental Stock Transfer & Trust Company,  2 Broadway,  New York, New
York 10004.  Forthwith upon the appointment of any subsequent transfer agent for
the Common Stock or other shares of the Company's  capital  stock  issuable upon



                                        6

<PAGE>


the exercise of the rights of purchase  represented by the Warrant,  the Company
will mail to the Warrantholder a statement setting forth the name and address of
such transfer agent.

     Section 14. Notices.  Any notice pursuant hereto to be given or made by the
Warrantholder  to or on the Company shall be sufficiently  given or made if sent
by certified  mail,  return receipt  requested,  postage  prepaid,  addressed as
follows:

                  Medical Dynamics, Inc.
                  99 Inverness Drive East
                  Englewood, CO  80112
                  Attn:  Van A. Horsley
                  Telephone:  303/790-2990
                  Facsimile:   303/799-1378

or such other  address as the  Company  may  specify in writing by notice to the
Warrantholder complying as to delivery with the terms of this Section 14.

     Any notice  pursuant hereto to be given or made by the Company to or on the
Warrantholder  shall be  sufficiently  given or made if sent by certified  mail,
return receipt requested, postage prepaid, to the address set forth on the books
of the  Company or, as to each of the  Company  and the  Warrantholder,  at such
other  address as shall be  designated  by such  party by written  notice to the
other party complying as to delivery with the terms of this Section 14. All such
notices,  requests,  demands,  directions and other  communications  shall, when
mailed be effective when deposited in the mails addressed as aforesaid.

     Section 15.  Registration  Rights.  The initial  holder of this  Warrant is
entitled to the benefit of certain registration rights in respect of the Warrant
Shares as provided in the Registration Rights Agreement dated effective July __,
1998.

     Section 16.  Successors.  All the covenants and provisions hereof by or for
the  benefit  of the  Investor  shall  bind  and  inure  to the  benefit  of its
respective successors and assigns hereunder.

     Section 17.  Governing  Law.  This Warrant shall be deemed to be a contract
made  under  the laws of the State of  Colorado  and for all  purposes  shall be
construed in accordance with the laws of said State.




                                        7

<PAGE>



     IN WITNESS WHEREOF,  the parties hereto have caused this Warrant to be duly
executed, as of the day and year first above written.

                                               MEDICAL DYNAMICS, INC.



                                               By:___________________________
                                                        Name:
                                                        Title:



Attest:


_______________________________



                                        8

<PAGE>


                             MEDICAL DYNAMICS, INC.
                              WARRANT EXERCISE FORM



MEDICAL DYNAMICS, INC.
99 Iverness Drive East
Englewood, CO  80112

     This  undersigned  hereby  irrevocably  elects  to  exercise  the  right of
purchase  represented  by the within  Warrant  ("Warrant")  for, and to purchase
thereunder by (CHECK AS  APPLICABLE) [] payment by cash or certified  check;  []
conversion  of the within  Warrant by surrender of the Warrant,  _______________
shares of Common Stock* ("Warrant  Shares")  provided for therein,  and requests
that certificates for the Warrant Shares be issued as follows:

                           --------------------------------
                           Name

                           --------------------------------
                           Address
                           --------------------------------

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

                           --------------------------------
                           Federal Tax Identification No.
                           or Social Security No.

and,  if the  number  of  Warrant  Shares  shall not be all the  Warrant  Shares
purchasable upon exercise of the Warrant,  that a new Warrant for the balance of
the Warrant Shares purchasable upon exercise of the Warrant be registered in the




* NOTE:   If  conversion  of the Warrant is made by surrender of the Warrant and
          the number of shares indicated exceeds the maximum number of shares to
          which a holder is entitled, the Company will issue such maximum number
          of shares.


<PAGE>


name of the undersigned  Warrantholder  or the  undersigned's  Assignee as below
indicated and delivered to the address stated below.

Dated:___________________, ____

                                      Signature:______________________________

                                                ------------------------------
                                                Name (please print)
                                                ------------------------------
                                                Address

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


                                                ------------------------------
                                                Federal Identification or
                                                Social Security No.


                                          Note: The   above    signature    must
                                                correspond  with the name of the
                                                registered  holder as written on
                                                the first page of the Warrant in
                                                every    particular,     without
                                                alteration or enlargement or any
                                                change   whatever,   unless  the
                                                Warrant has been assigned.





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