<?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>S2306-41022023000200079</article-id>
<article-id pub-id-type="doi">10.35366/112986</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[How common is extra-articular knee deformity? How to achieve a «safe zone» alignment total knee arthroplasty in patients with extra-articular deformity]]></article-title>
<article-title xml:lang="es"><![CDATA[¿Qué tan común es la deformidad extraarticular de rodilla? ¿Cómo lograr una artroplastia total de rodilla con alineación de «zona segura» en pacientes con deformidad extraarticular?]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Salazar-López]]></surname>
<given-names><![CDATA[JN]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Yáñez-Mejía]]></surname>
<given-names><![CDATA[LG]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Pesina]]></surname>
<given-names><![CDATA[AH]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vázquez Vela-Echeverria]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Elizalde-Peña]]></surname>
<given-names><![CDATA[JM]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Solorzano-López]]></surname>
<given-names><![CDATA[MB]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital H+ Querétaro  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2023</year>
</pub-date>
<volume>37</volume>
<numero>2</numero>
<fpage>79</fpage>
<lpage>84</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2306-41022023000200079&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2306-41022023000200079&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2306-41022023000200079&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: The need for total knee arthroplasty is increasing considerably and one of the goals is to achieve post-surgical coronal alignment. Robotic surgical assistance achieves a functional alignment, which is a hip-knee-ankle angle of 0o. However, it is not possible to provide robotic assisted surgery to all our patients so we must include the full-length hip-to-ankle AP weight-bearing radiograph in preoperative planning to obtain a «safe zone» alignment, which is a post-surgical hip-knee-ankle Angle of 0 ± 3o. How can we achieve a «safe zone» alignment total knee arthroplasty in patients with extra-articular deformity?]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: La necesidad de artroplastia total de rodilla está aumentando considerablemente y uno de los objetivos es lograr la alineación coronal postquirúrgica. La asistencia quirúrgica robótica consigue una alineación funcional, que es un ángulo cadera-rodilla-tobillo de 0o. Sin embargo, no es posible ofrecer cirugía asistida por robot a todos nuestros pacientes, por lo que debemos incluir la radiografía AP de soporte de peso de cadera a tobillo de cuerpo entero en la planificación preoperatoria para obtener una alineación de «zona segura», que es un ángulo postquirúrgico cadera-rodilla-tobillo de 0 ± 3o. ¿Cómo podemos conseguir una artroplastia total de rodilla con alineación de «zona segura» en pacientes con deformidad extraarticular?]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[mechanical alignment]]></kwd>
<kwd lng="en"><![CDATA[kinematic alignment]]></kwd>
<kwd lng="en"><![CDATA[«safe zone» alignment]]></kwd>
<kwd lng="en"><![CDATA[functional alignment]]></kwd>
<kwd lng="en"><![CDATA[extra-articular deformity]]></kwd>
<kwd lng="en"><![CDATA[intra-articular correction]]></kwd>
<kwd lng="es"><![CDATA[alineación mecánica]]></kwd>
<kwd lng="es"><![CDATA[alineación cinemática]]></kwd>
<kwd lng="es"><![CDATA[alineación «zona segura»]]></kwd>
<kwd lng="es"><![CDATA[alineación funcional]]></kwd>
<kwd lng="es"><![CDATA[deformidad extraarticular]]></kwd>
<kwd lng="es"><![CDATA[corrección intraarticular]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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