<?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>S2306-41022020000200081</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Alteración de mediciones radiográficas en osteosíntesis de húmero proximal con clavo centromedular]]></article-title>
<article-title xml:lang="en"><![CDATA[Alteration of X-ray measurements in proximal humerus osteosynthesis with intramedullary nail]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valencia-Ramón]]></surname>
<given-names><![CDATA[EA]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hazan-Lasri]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pineda-Gómez]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Martínez]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ponce-De León Domínguez]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gutiérrez-Sevilla]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gutiérrez-Báez]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Moreno-Degante]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ruiz-Suárez]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Nacional de Rehabilitación  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Nacional de Rehabilitación División de Traumatología, Urgencias e Infecciones Óseas ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Nacional de Rehabilitación Servicio de Traumatología ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Instituto Nacional de Rehabilitación Servicio de Traumatología ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2020</year>
</pub-date>
<volume>34</volume>
<numero>2</numero>
<fpage>81</fpage>
<lpage>86</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2306-41022020000200081&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2306-41022020000200081&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2306-41022020000200081&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Introducción:  La calidad de reducción en las fracturas de húmero proximal es posible valorarla a través de criterios radiográficos (ACD = ángulo cervicodiafisario; OM = offset medial; DTC = distancia tuberosidad-cabeza y ES = espacio subacromial), los cuales predicen la funcionalidad. Sin embargo, estos criterios establecidos para otros implantes no están descritos para el clavo centromedular.  Material y métodos:  Estudio de cohorte observacional y retrospectivo en pacientes &gt; 18 años con osteosíntesis con clavo centromedular (durante el período de 2014 a 2017), en donde se evaluaron las características demográficas, severidad de lesión (clasificación de Neer) y las mediciones radiográficas progresivas y complicaciones.  Resultados:  Se analizaron 84 casos, cuya edad en promedio fue de 65 ± 2 años y la media de seguimiento de 13.9 meses. Por clasificación de Neer: 40.4% fueron grado II; 29.7%, grado III y 29.7%, grado IV. La consolidación en varo aumenta 10.7% al final del seguimiento, siendo aquellos pacientes Neer grado III y IV los más frecuentes. La deformidad &gt; 140o predomina para Neer grado II (n = 15/34). En 30.9%, se presenta un cambio de ACD (&#916;ACD) &#8805; 10o. En general, 86.9% tiene cambios de DTC &lt; 5 mm. En los casos Neer grado III/IV, 32% tiene una alteración de ES &gt; 5 mm. La complicación más frecuentemente es la necrosis avascular (NAV) con 44% de los casos.  Conclusiones:  Las mediciones radiográficas presentan cambios en valoraciones a largo plazo. Las alteraciones en ACD (&gt; 10o) y ES (&gt; 5 mm) se dan en mayor proporción en aquellos pacientes Neer grado III/IV (acorde con la severidad de la fractura), lo que favorece consolidaciones viciosas en varo o valgo y una mayor presencia de NAV.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Introduction:  The quality of reduction in proximal humerus fractures is valuable with radiographic criteria (Neck-shaft angle [NSA]; medial offset [MO]; distance head tuberosity [DHT] and subacromial space [SS]) that predict functionality. These criteria set for other implants are not described for the intramedullary nail.  Material and methods:  Observational cohort study, retrospective, with patients &gt; 18 years, with osteosynthesis with intramedullary nail (2014 to 2017), evaluating demographic characteristics, severity of injury (Neer classification), progressive radiographic measurements and complications.  Results:  84 cases with an average age of 65 ± 2 years and an average follow-up of 13.9 months were analyzed. By Neer rating 40.4% were grade II, 29.7% grade III and 29.7% grade IV. Consolidation in varus increases to 10.7% at the end of follow-up, with Neer III and IV patients. The &gt;140o deformity is prevalent for Neer II (n = 15/34). 30.9% have a change of neck-shaft angle of &#8805; 10o. Overall 86.9% has HTD changes &lt; 5 mm. Cases Neer III/IV 32% has alteration of SS &gt; 5 mm. The most common complication is avascular necrosis (AVN) with 44% of cases.  Conclusions:  Radiographic measurements have changes in long-term follow-up. Alterations in NSA (&gt; 10o) and SS (&gt; 5 mm) occur in higher proportion of Neer III/IV patients, according to the severity of the fracture, favoring vicious consolidations in varus or valgus and increased presence of AVN.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Fractura del húmero proximal]]></kwd>
<kwd lng="es"><![CDATA[tratamiento]]></kwd>
<kwd lng="es"><![CDATA[clavo]]></kwd>
<kwd lng="es"><![CDATA[complicaciones]]></kwd>
<kwd lng="es"><![CDATA[radiografías]]></kwd>
<kwd lng="en"><![CDATA[Proximal humeral fracture]]></kwd>
<kwd lng="en"><![CDATA[treatment]]></kwd>
<kwd lng="en"><![CDATA[nail]]></kwd>
<kwd lng="en"><![CDATA[complications]]></kwd>
<kwd lng="en"><![CDATA[X-rays]]></kwd>
</kwd-group>
</article-meta>
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