<?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>S2306-41022021000300271</article-id>
<article-id pub-id-type="doi">10.35366/102366</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Prevalencia de lesión del ligamento colateral medial de la rodilla valorada por resonancia magnética]]></article-title>
<article-title xml:lang="en"><![CDATA[Prevalence of injury of the medial collateral ligament of the knee assessed by magnetic resonance]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aguirre-Rodríguez]]></surname>
<given-names><![CDATA[VH]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valdés-Montor]]></surname>
<given-names><![CDATA[JF]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valero-González]]></surname>
<given-names><![CDATA[FS]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Santa-María-Gasca]]></surname>
<given-names><![CDATA[NE]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gómez-Pérez]]></surname>
<given-names><![CDATA[MG]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez-Silva]]></surname>
<given-names><![CDATA[MC]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zúñiga-Isaac]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Mora]]></surname>
<given-names><![CDATA[HE]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mejía-Terrazas]]></surname>
<given-names><![CDATA[GE]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Ángeles Pedregal Clínica de Cadera y Rodilla ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital Ángeles Pedregal  ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Hospital Ángeles Pedregal Clínica de Hombro y Codo ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Hospital Ángeles Pedregal  ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Hospital Ángeles Pedregal  ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Hospital Ángeles México Clínica del Dolor ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<volume>35</volume>
<numero>3</numero>
<fpage>271</fpage>
<lpage>275</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2306-41022021000300271&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2306-41022021000300271&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2306-41022021000300271&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Introducción:  El ligamento colateral medial (LCM) es uno de los principales estabilizadores de la rodilla, pero su lesión se presenta en conjunto con otras lesiones ligamentarias.  Objetivo:  Determinar la prevalencia de lesiones del LCM por resonancia magnética, sus grados y lesiones asociadas en nuestra institución.  Material y métodos:  Estudio retrospectivo de Enero a Abril de 2018, se evaluaron resonancias magnéticas de rodilla donde se presentó lesión del LCM para evaluar grado y tipo de lesiones asociadas.  Resultados:  Se incluyeron 368 estudios, prevalencia de lesión aislada del LCM de 3.07%, una grado I y una grado II, la prevalencia de lesiones de LCM concomitantes fue de 17.66%, grado I (75%), grado II (15%) y grado III (3%). Las lesiones asociadas fueron lesión del menisco medial (46.15%), lesión del ligamento cruzado anterior (30.7%), contusión ósea aislada (18.46%), lesiones condrales (37.58%), lesión de vasto medial (14.51%), lesión del retináculo medial patelar (14.51%), lesión del vasto lateral (9.23%), lesión del ligamento cruzado posterior (6.15%), lesión del menisco lateral (4.61%), tenosinovitis banda iliotibial (4.61%), fractura de avulsión de la faceta medial (3.07%), tenosinovitis de la Pes Anserinus (3.07%).  Conclusión:  Prevalencia de 17.66% de lesiones del LCM en nuestro hospital por resonancia magnética, predominan los dos primeros grados con un espectro amplio de lesiones asociadas de la rodilla.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Introduction:  The medial collateral ligament (MCL) is one of the main stabilizers of the knee, but its injury occurs in conjunction with other ligaments.  Objective:  To determine the prevalence of MCL lesions by magnetic resonance imaging, their degrees and associated lesions in our institution.  Material and Methods:  Retrospective study from January to April 2018 where KNEE MRIs were evaluated where the MCL lesion was presented to evaluate the degree and type of associated injuries.  Results:  We included 368 studies, prevalence of isolated MCL lesion of 3.07%, grade I and grade II, prevalence of concomitant MCL lesions was 17.66% grade I (75%), grade II (15%) and grade III (3%). Associated injuries were medial meniscus injury (46.15%), anterior cruciate ligament injury (30.7%), isolated bone contusion (18.46%), chodral injuries (37.58%), medial vastus injury (14.51%), patellar medial retinacular injury (14.51%), vastus lateral injury (9.23%), posterior cruciate ligament injury (6.15%), lateral meniscus injury (4.61%), iliotibial band tenosynovitis (4.61%), medial facet avulsion fracture (3.07%), Pes Anserine tenosynovitis (3.07%).  Conclusion:  Prevalence of 17.66% of the MCL injuries in our hospital by magnetic resonance, the first 2 degrees predominate, with a wide spectrum of associated knee injuries.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Ligamento colateral medial]]></kwd>
<kwd lng="es"><![CDATA[esquina posteromedial]]></kwd>
<kwd lng="es"><![CDATA[prevalencia]]></kwd>
<kwd lng="es"><![CDATA[lesión]]></kwd>
<kwd lng="en"><![CDATA[Medial collateral ligament]]></kwd>
<kwd lng="en"><![CDATA[posteromedial corner]]></kwd>
<kwd lng="en"><![CDATA[prevalence]]></kwd>
<kwd lng="en"><![CDATA[injury]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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