<?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>1405-7743</journal-id>
<journal-title><![CDATA[Ingeniería, investigación y tecnología]]></journal-title>
<abbrev-journal-title><![CDATA[Ing. invest. y tecnol.]]></abbrev-journal-title>
<issn>1405-7743</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Facultad de Ingeniería]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-77432017000400445</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Análisis numérico comparativo del comportamiento a fatiga de dos osteosíntesis utilizadas en el tratamiento de la fractura de cadera 31 A1 .1.]]></article-title>
<article-title xml:lang="en"><![CDATA[Comparative numerical analysis of the fatigue behavior of two osteosynthesis used in the treatment of hip fracture 31 A1 .1.]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramos-Botello]]></surname>
<given-names><![CDATA[Yoan Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arias-Hidalgo]]></surname>
<given-names><![CDATA[René Misael]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bosch-Cabrera]]></surname>
<given-names><![CDATA[Jorge Alexander]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Estrada-Cingualbres]]></surname>
<given-names><![CDATA[Roberto Andrés]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Granma Facultad de Ciencias Técnicas Departamento de Ingeniería Mecánica]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Granma Facultad de Ciencias Técnicas Departamento de Ingeniería Mecánica]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de Granma Facultad de Ciencias Técnicas Departamento de Ingeniería Mecánica]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad de Holguín Oscar Lucero Moya Centro de Estudios CAD/CAM ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2017</year>
</pub-date>
<volume>18</volume>
<numero>4</numero>
<fpage>445</fpage>
<lpage>455</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-77432017000400445&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-77432017000400445&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-77432017000400445&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen En la presente investigación se simula el comportamiento a fatiga mediante un software de cálculo por elementos finitos, de los fijadores internos placa DHS (Dynamic Hip Screw) y un clavo Gamma, utilizados en el tratamiento de fracturas de cadera. Para el análisis de dicho comportamiento se realizaron estudios estáticos, donde las variables fundamentales a evaluar fueron las tensiones de von Mises. Para ello, se tomó en cuenta la acción de los músculos y el peso corporal para cuatro instantes del ciclo de marcha, así como las restricciones, condiciones de contacto entre los modelos y propiedades mecánicas de cada uno de los mismos. Tomando como base los resultados de los estudios estáticos y las curvas S-N del material de cada modelo, se realizaron estudios de fatiga para determinar la vida en ciclos de cada fijador. Los estudios permitieron determinar dónde son mayores las tensiones y cuál de ellos podrá soportar mayores ciclos de carga antes del fallo por fatiga. En función de dichos resultados, se determinó que el clavo Gamma es el de mejor comportamiento mecánico para todos los casos estudiados, lo que se comprobó con los resultados obtenidos por otros autores. Ya que en los estudios no se consideró la zona trabecular del fémur, los resultados obtenidos solo tienen validez desde el punto de vista cualitativo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract In the present research the fatigue behavior is simulated with a thin-element calculus software, internal fixing plate DHS (Dynamic Hip Screw) and a Gamma nail, used in the treatment of hip fracture. For the analysis of the behavior static studies have been carried out, where the fundamental variables have been evaluated in the stresses of von Mises. For this, the action of muscles and body weight for four instants of the gait cycle has been taken into account, as well as the restrictions, the contact conditions between the models and the mechanical properties of each one of them. Based on the results of the static studies and the S-N curves of the material of each model, fatigue studies were performed to determine the cycle life of each fixative. The studies allowed to determine where the tensions are greater and which of them can withstand greater cycles of load before the fall by fatigue. Based on the results of the results, it was possible to determine that the Gama nail is the best mechanical behavior, for all the cases studied, which could be verified with the results obtained by other authors. However, since the studies do not consider the trabecular area of the femur, the results obtained are valid only from the qualitative point of view.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[elementos finitos]]></kwd>
<kwd lng="es"><![CDATA[biomecánica]]></kwd>
<kwd lng="es"><![CDATA[fracturas de caderas]]></kwd>
<kwd lng="es"><![CDATA[placa DHS]]></kwd>
<kwd lng="es"><![CDATA[clavo Gamma]]></kwd>
<kwd lng="en"><![CDATA[finite elements]]></kwd>
<kwd lng="en"><![CDATA[biomechanics]]></kwd>
<kwd lng="en"><![CDATA[hip fracture]]></kwd>
<kwd lng="en"><![CDATA[plate DHS]]></kwd>
<kwd lng="en"><![CDATA[Gamma nail]]></kwd>
</kwd-group>
</article-meta>
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