<?xml version="1.0"?>
<ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType><periodOfReport>2003-12-16</periodOfReport>
    <issuer>
        <issuerCik>0000944763</issuerCik>
        <issuerName>ENCORE MEDICAL CORP</issuerName>
        <issuerTradingSymbol>ENMC</issuerTradingSymbol></issuer><reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001058190</rptOwnerCik>
            <rptOwnerName>WESSON BRUCE F/</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O GALEN ASSOCIATES</rptOwnerStreet1>
            <rptOwnerStreet2>610 FIFTH AVENUE</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10020</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
<isDirector>1</isDirector><isOfficer>0</isOfficer><isTenPercentOwner>1</isTenPercentOwner><isOther>0</isOther></reportingOwnerRelationship></reportingOwner><nonDerivativeTable><nonDerivativeTransaction><securityTitle><value>Common Stock</value></securityTitle><transactionDate><value>2003-12-16</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>S</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>1506216</value></transactionShares><transactionPricePerShare><value>6.25</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>9670475</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>I</value></directOrIndirectOwnership><natureOfOwnership><value>By Galen Partners III, L.P.</value><footnoteId id="F1"/></natureOfOwnership></ownershipNature></nonDerivativeTransaction><nonDerivativeTransaction><securityTitle><value>Common Stock</value></securityTitle><transactionDate><value>2003-12-16</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>S</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>136332</value></transactionShares><transactionPricePerShare><value>6.25</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>875301</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>I</value></directOrIndirectOwnership><natureOfOwnership><value>By Galen Partners International III, L.P.</value><footnoteId id="F2"/></natureOfOwnership></ownershipNature></nonDerivativeTransaction><nonDerivativeTransaction><securityTitle><value>Common Stock</value></securityTitle><transactionDate><value>2003-12-16</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>S</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>6225</value></transactionShares><transactionPricePerShare><value>6.25</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>39964</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>I</value></directOrIndirectOwnership><natureOfOwnership><value>By Galen Employee Fund III, L.P.</value><footnoteId id="F3"/></natureOfOwnership></ownershipNature></nonDerivativeTransaction><nonDerivativeTransaction><securityTitle><value>Common Stock</value></securityTitle><transactionDate><value>2003-12-16</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>S</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>7816</value><footnoteId id="F4"/><footnoteId id="F5"/></transactionShares><transactionPricePerShare><value>6.25</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>50184</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></nonDerivativeTransaction></nonDerivativeTable><footnotes><footnote id="F1">By Galen Partners III, L.P. (&quot;Galen III&quot;).  The reporting person is one of several managing members of the sole general partner of Galen III.  Pursuant to Instruction 4(b)(iv) of Form 4, the reporting person has elected to report as indirectly beneficially owned the entire number of securities owned by such limited partnership.  The reporting person disclaims beneficial ownership of any securities, and any proceeds thereof, that exceed his pecuniary interest therein, and/or that are not actually distributed to him.</footnote><footnote id="F2">By Galen Partners International III, L.P. (&quot;Galen Intl&quot;).  The reporting person is one of several managing members of the sole general partner of Galen Intl.  Pursuant to Instruction 4(b)(iv) of Form 4, the reporting person has elected to report as indirectly beneficially owned the entire number of securities owned by such limited partnership.  The reporting person disclaims beneficial ownership of any securities, and any proceeds thereof, that exceed his pecuniary interest therein, and/or that are not actually distributed to him.</footnote><footnote id="F3">By Galen Employee Fund III, L.P. (&quot;GEF&quot;).  The reporting person is the President and sole director of the sole general partner of GEF.  Pursuant to Instruction 4(b)(iv) of Form 4, the reporting person has elected to report as indirectly beneficially owned the entire number of securities beneficially owned by such limited partnership.  The reporting person disclaims beneficial ownership of any securities, and any proceeds thereof, that exceed his pecuiary interest therin and/or that are not actually distributed to him.</footnote><footnote id="F4">The reporting person also indirectly beneficially owns 63,492 shares held by Galen Advisors, LLC. The reporting person is a member of Galen Advisors, LLC.  Pursuant to Instruction 4(b)(iv) of Form 4, the reporting person had elected to report as indirectly beneficially owned the entire number of securities beneficially owned by such limited liability company.  The reporting person disclaims beneficial ownership of any securities, and any proceeds thereof, that exceed his pecuniary interest therein, and/or that are not actually distributed to him.</footnote><footnote id="F5">The reporting person also indirectly beneficially owns 17,500 shares held in a trust for the benefit of the reporting person's children, of which the reporting person's spouse is a co-trustee.  The reporting person disclaims beneficial ownership of such shares.</footnote></footnotes><remarks/><ownerSignature><signatureName>Bruce F. Wesson</signatureName><signatureDate>2003-12-18</signatureDate></ownerSignature></ownershipDocument>

