<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>2306-4102</journal-id>
<journal-title><![CDATA[Acta ortopédica mexicana]]></journal-title>
<abbrev-journal-title><![CDATA[Acta ortop. mex]]></abbrev-journal-title>
<issn>2306-4102</issn>
<publisher>
<publisher-name><![CDATA[Colegio Mexicano de Ortopedia y Traumatología A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2306-41022025000600405</article-id>
<article-id pub-id-type="doi">10.35366/121821</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Isolated femoral avulsion fracture at the medial head of the gastrocnemius muscle in a skeletally immature gymnast]]></article-title>
<article-title xml:lang="es"><![CDATA[Fractura por avulsión femoral aislada en la cabeza medial del músculo gastrocnemio en un gimnasta esqueléticamente inmaduro]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carabajal-Mattar]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Azalim]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Masquijo]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Sanatorio Allende Department of Pediatric Orthopaedics ]]></institution>
<addr-line><![CDATA[Cordoba ]]></addr-line>
<country>Argentina</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital Universitario Ciencias Médicas  ]]></institution>
<addr-line><![CDATA[Minas Gerais ]]></addr-line>
<country>Brazil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2025</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2025</year>
</pub-date>
<volume>39</volume>
<numero>6</numero>
<fpage>405</fpage>
<lpage>409</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2306-41022025000600405&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2306-41022025000600405&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2306-41022025000600405&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: Avulsion fractures of the medial head of the gastrocnemius muscle are extremely uncommon, with only a few cases documented in medical literature. We present a case involving a 12-year-old female gymnast who experienced acute pain in the back of her knee after a training incident. Initial radiographs did not reveal any abnormalities, prompting further imaging for accurate diagnosis. Advanced imaging identified an avulsion fracture at the posteromedial aspect of the femur, originating from the medial gastrocnemius tendon. The patient underwent conservative treatment. At the three-month follow-up, she had returned to gymnastics without any symptoms. At the two-year follow-up, she remained asymptomatic and had fully resumed her pre-injury level of athletic performance.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Las fracturas por avulsión de la cabeza medial del músculo gastrocnemio son extremadamente poco frecuentes, con solo unos pocos casos documentados en la literatura médica. Presentamos el caso de una gimnasta de 12 años que experimentó un dolor agudo en la parte posterior de la rodilla tras un incidente durante el entrenamiento. Las radiografías iniciales no revelaron ninguna anomalía, lo que motivó la realización de más pruebas de imagen para obtener un diagnóstico preciso. Las pruebas de imagen avanzadas identificaron una fractura por avulsión en la cara posteromedial del fémur, originada en el tendón medial del gastrocnemio. La paciente fue sometida a un tratamiento conservador. En la revisión realizada a los tres meses, había vuelto a practicar gimnasia sin presentar ningún síntoma. En la revisión realizada a los dos años, seguía sin presentar síntomas y había recuperado por completo su nivel de rendimiento deportivo anterior a la lesión.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[adolescent]]></kwd>
<kwd lng="en"><![CDATA[gastrocnemius]]></kwd>
<kwd lng="en"><![CDATA[avulsion fracture]]></kwd>
<kwd lng="en"><![CDATA[gymnast]]></kwd>
<kwd lng="es"><![CDATA[adolescente]]></kwd>
<kwd lng="es"><![CDATA[gastrocnemio]]></kwd>
<kwd lng="es"><![CDATA[fractura por avulsión]]></kwd>
<kwd lng="es"><![CDATA[gimnasta]]></kwd>
</kwd-group>
</article-meta>
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