<?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>S2306-41022025000400231</article-id>
<article-id pub-id-type="doi">10.35366/120455</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Teres major rupture: case report in a jiu-jitsu athlete]]></article-title>
<article-title xml:lang="es"><![CDATA[Rotura del músculo redondo mayor: informe de un caso en un atleta de jiu-jitsu]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Drummond]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lopes-Ferreira-Júnior]]></surname>
<given-names><![CDATA[LC]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Paiva-D&#8217;Elia]]></surname>
<given-names><![CDATA[LH]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Revite]]></surname>
<given-names><![CDATA[LR De Oliveira]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Duarte]]></surname>
<given-names><![CDATA[ML]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidade de Ribeirão Preto Campus Guarujá ]]></institution>
<addr-line><![CDATA[Guarujá (SP) ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Clínica Santa Marcelina  ]]></institution>
<addr-line><![CDATA[Santos (SP) ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidade de Ribeirão Preto Campus Guarujá ]]></institution>
<addr-line><![CDATA[Santos (SP) ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Clínica Santa Marcelina  ]]></institution>
<addr-line><![CDATA[Santos (SP) ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidade de Ribeirão Preto Radiologist at Diagnósticos da América S.A. - DASA ]]></institution>
<addr-line><![CDATA[Guarujá (SP) ]]></addr-line>
<country>Brazil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2025</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2025</year>
</pub-date>
<volume>39</volume>
<numero>4</numero>
<fpage>231</fpage>
<lpage>235</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2306-41022025000400231&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2306-41022025000400231&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2306-41022025000400231&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: The rupture of the teres major muscle is a well-known condition in sports activities like baseball, hockey, and tennis. There is no real consensus in the literature regarding treatment, with approaches varying between functional and surgical methods. While functional treatment appears to be a viable option, there is a lack of evidence indicating significant improvement in medial rotation strength after aforementioned treatment. We report a 30-year-old male with pain below the right armpit for the past 10 days, attributed to jiu-jitsu training which revealed a complete tear of the musculotendinous junction of the teres major and a partial insertional tear (approximately 75% of thickness) of the supraspinatus and infraspinatus tendons, along with atrophy in the musculotendinous transition of the pectoralis major. The patient was treated with analgesic medication, accompanied by physiotherapeutic treatment included electrothermophototherapy, laser/LED therapy, manual therapy, and a structured exercise regimen over 14 weeks, gradually reintroducing sport-specific training.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: La rotura del músculo redondo mayor es una afección muy conocida en actividades deportivas como el béisbol, el hockey y el tenis. No existe un consenso real en la literatura sobre el tratamiento, y los enfoques varían entre métodos funcionales y quirúrgicos. Si bien el tratamiento funcional parece ser una opción viable, falta evidencia que indique una mejora significativa en la fuerza de rotación medial después de dicho tratamiento. Presentamos a un hombre de 30 años con dolor debajo de la axila derecha durante los últimos 10 días, atribuido al entrenamiento de jiu-jitsu, que reveló un desgarro completo de la unión musculotendinosa del redondo mayor y un desgarro de inserción parcial (aproximadamente el 75% de espesor) de los tendones supraespinoso e infraespinoso, junto con atrofia en la transición musculotendinosa del pectoral mayor. El paciente fue tratado con medicación analgésica, acompañada de tratamiento fisioterapéutico que incluyó electrotermofototerapia, terapia con láser/LED, terapia manual y un régimen de ejercicio estructurado durante 14 semanas, reintroduciendo gradualmente el entrenamiento deportivo específico.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[magnetic resonance imaging]]></kwd>
<kwd lng="en"><![CDATA[sports]]></kwd>
<kwd lng="en"><![CDATA[shoulder injuries]]></kwd>
<kwd lng="es"><![CDATA[imágenes por resonancia magnética]]></kwd>
<kwd lng="es"><![CDATA[deportes]]></kwd>
<kwd lng="es"><![CDATA[lesiones de hombro]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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