<?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>S2306-41022018000400198</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Esterasa leucocitaria como prueba diagnóstica eficaz, económica y rápida ante un proceso infeccioso articular de rodilla]]></article-title>
<article-title xml:lang="en"><![CDATA[Leucocyte esterase as a reliable diagnostic, cost-effective and fast in knee infections]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ceja-Picazo]]></surname>
<given-names><![CDATA[SU]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fuentes-Figueroa]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rivera-Villa]]></surname>
<given-names><![CDATA[AH]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Salgado]]></surname>
<given-names><![CDATA[AR]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Torres-González]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Miguel-Pérez]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-García]]></surname>
<given-names><![CDATA[JA]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Atanasio]]></surname>
<given-names><![CDATA[JM]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Mexicano del Seguro Social Unidad Médica de Alta Especialidad (UMAE). «Dr. Victorio de la Fuente Narváez» ]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Mexicano del Seguro Social Hospital de Traumatología Unidad Médica de Alta Especialidad «Dr. Victorio de la Fuente Narváez»]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Mexicano del Seguro Social Hospital de Ortopedia Unidad Médica de Alta Especialidad «Dr. Victorio de la Fuente Narváez»]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Instituto Mexicano del Seguro Social Hospital de Traumatología Unidad Médica de Alta Especialidad «Dr. Victorio de la Fuente Narváez»]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Instituto Mexicano del Seguro Social Hospital de Traumatología Unidad Médica de Alta Especialidad «Dr. Victorio de la Fuente Narváez»]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Instituto Mexicano del Seguro Social Hospital de Ortopedia Unidad Médica de Alta Especialidad «Dr. Victorio de la Fuente Narváez»]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af7">
<institution><![CDATA[,Instituto Mexicano del Seguro Social Unidad Médica de Alta Especialidad «Dr. Victorio de la Fuente Narváez» Servicio de Rescate Osteoarticular]]></institution>
<addr-line><![CDATA[Ciudad de México ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2018</year>
</pub-date>
<volume>32</volume>
<numero>4</numero>
<fpage>198</fpage>
<lpage>202</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2306-41022018000400198&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2306-41022018000400198&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2306-41022018000400198&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Antecedentes:  La infección articular es un reto ortopédico por la complejidad diagnóstica y sus efectos devastadores al no tratarse oportunamente. Se cuenta con diversos estudios de diagnóstico: cultivo, VSG, PCR, conteo de leucocitos, entre otros, pero ninguno es preciso, tardan más de 30 minutos en realizarse y requieren una infraestructura compleja. En este estudio se determina la sensibilidad y especificidad de la esterasa leucocitaria para la detección de un proceso infeccioso articular en población mexicana.  Material y métodos: de Noviembre de 2015 a Abril de 2016 se obtuvo líquido sinovial de pacientes con diagnóstico de infección articular con o sin implante y sin infección con patología degenerativa de rodilla. Se evaluó la muestra mediante el  test de esterasa leucocitaria COMBI-SCREEN 11SYS con lectura colorimétrica a los dos minutos, determinando positivo para infección: dos cruces, el resto de la muestra fue enviado a cultivo.  Resultados:  Se aplicó el  test a 64 muestras de líquido sinovial de rodilla, 19 diagnosticadas con infección articular y 45 sin infección. Se obtuvo una sensibilidad 100%, especificidad 88.24% VPP 68.42% y VPN 100%, índice de concordancia kappa 0.753 mediante el programa IBM SPSS Statistics 22, Python versión 2.7.  Conclusiones:  La esterasa leucocitaria es una prueba rápida, económica y eficaz para detectar un proceso infeccioso contra un proceso inflamatorio con alta probabilidad de acierto. Este estudio presentó un índice de concordancia kappa de 0.753, demostrando ser reproducible, por lo que se recomienda implementarse en los servicios de urgencias a nivel nacional.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Background:  The articular infection represents a challenge due to its complexity and its devastating effect when not treated promptly. We have various diagnostic studies: cultures, ESR, CRP, count of leukocytes, among others but none is specific, it takes more than 30 minutes to complete and require complex infrastructure. In this study we determine the sensitivity and specificity of the leukocyte esterase for detection of an infectious process joint in Mexican population.  Material and methods:  From November 2015 to April 2016 was obtained synovial fluid from patients with diagnosis of knee infection with or without implant and without infection with degenerative pathology of the knee. It assessed the sample through the COMBI-SCREEN 11SYS leukocyte esterase with reading colorimetric test at two minutes determining positive for infection: two crosses, the remainder of the sample was sent to culture.  Results:  We perform the test in 64 samples of synovial fluid of knee joint 19 diagnosed with infection and 45 without infection. Was obtained a sensitivity 100%, specificity of 88.24%, PPV 68.42% and PNV 100%, kappa index 0.753 using the program IBM SPSS Statistics 22, Python ver. 2.7.  Conclusions:  Leukocyte esterase is a fast, economical and effective to detect an infectious process against one inflammatory with high probability of success. This study showed an index of concordance 0.753 Kappa, proving to be reproducible so recommend be implemented in the emergency department at the national level.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Artritis séptica]]></kwd>
<kwd lng="es"><![CDATA[esterasa leucocitaria]]></kwd>
<kwd lng="es"><![CDATA[rodilla]]></kwd>
<kwd lng="es"><![CDATA[infección]]></kwd>
<kwd lng="es"><![CDATA[prótesis]]></kwd>
<kwd lng="en"><![CDATA[Septic arthritis]]></kwd>
<kwd lng="en"><![CDATA[leukocyte esterase]]></kwd>
<kwd lng="en"><![CDATA[knee]]></kwd>
<kwd lng="en"><![CDATA[infection]]></kwd>
<kwd lng="en"><![CDATA[replacement]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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