<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2007-09-09</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000946428</issuerCik>
        <issuerName>ORTHOMETRIX  INC</issuerName>
        <issuerTradingSymbol>OMRX.PK</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001006017</rptOwnerCik>
            <rptOwnerName>BONMATI REYNALD G</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>PREMIUM POINT</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW ROCHELLE</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10801</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President &amp; Chairman</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $0.0005</value>
            </securityTitle>
            <transactionDate>
                <value>2007-09-09</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>25000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.045</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>21890807</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>SEE FOOTNOTE</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The amount of securities beneficially owned by the reporting person includes the aggregate number of shares indirectly owned by the reporting person, which includes 13,449,499 shares of the issuer's common stock held by Bones, LLC, of which the reporting person is a managing member. The aggregate number of shares is reported under SEC Rules and Staff Interpretations, although the number includes shares in which the reporting person does not have a pecuniary interest.</footnote>
        <footnote id="F2">The reporting person disclaims beneficial ownership of 1,421,638 shares of the issuer's common stock. In filing this Form-4 and reporting the information contained herein, the undersigned is not admitting to or conceding beneficial ownership of any securities of rights described herein pursuant to Sections 13 or 16 of the Securities Exchange Act of 1934, as amended, or any rule or regulation promulgated hereunder. 1,361,638 shares are owned by the reporting person's wife, as trustee of two trusts benefitting their children, The Sandrine Bonmati Trust and The Chrystele Bonmati Trust with respect to which the reporting person disclaims beneficial ownership. The Sandrine Bonmati Trust held a total of 531,600 shares of the issuer's common stock on September 9,2007. The Chrystele Bonmati Trust held 830,038 shares on September 9,2007. A total of 60,000 shares are owned by the reporting person's grandchildren on September 9,2007, to which the reporting person disclaims beneficial ownership.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Reynald Bonmati</signatureName>
        <signatureDate>2007-09-10</signatureDate>
    </ownerSignature>
</ownershipDocument>
