<?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>S2306-41022021000100051</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Incidencia de luxación y relación con el abordaje en una cohorte histórica de 1,738 caderas del Registro Nacional de Uruguay]]></article-title>
<article-title xml:lang="en"><![CDATA[Incidence of dislocation and relationship with the surgical approach in a historic cohort of 1,738 hips of the National Register of Uruguay]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Costa]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Saona]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Albornoz]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rey]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de la República Facultad de Medicina ]]></institution>
<addr-line><![CDATA[Montevideo ]]></addr-line>
<country>Uruguay</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Fondo Nacional de Recursos  ]]></institution>
<addr-line><![CDATA[Montevideo ]]></addr-line>
<country>Uruguay</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de la República  ]]></institution>
<addr-line><![CDATA[Montevideo ]]></addr-line>
<country>Uruguay</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>02</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>02</month>
<year>2021</year>
</pub-date>
<volume>35</volume>
<numero>1</numero>
<fpage>51</fpage>
<lpage>55</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2306-41022021000100051&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2306-41022021000100051&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2306-41022021000100051&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Introducción:  En Uruguay se registran por ley todas las artroplastías desde 1980. La inestabilidad es la segunda causa de revisión en artroplastías de cadera.  Objetivo:  Conocer la incidencia de inestabilidad y su relación con el abordaje.  Material y métodos:  Estudio observacional y analítico de una cohorte histórica de 1,738 artroplastías de cadera efectuadas en 2014. Muestra aleatoria estratificada según la vía de abordaje: abordaje posterior (AP) y anterolateral (AAL). Se identificaron todos los pacientes que habían sufrido alguna luxación, se estimó su incidencia y se realizó análisis bivariado y multivariado para identificar los factores relacionados asociados al paciente, al cirujano (abordaje y experiencia), al medio y al implante.  Resultados:  633 pacientes, seguimiento mínimo de tres años y 16 pacientes con luxación, con una incidencia de 1.95% (IC 95%: 1.14-3.31) en general, 1.4% (IC 95%: 0.64-3.03) en AAL y 4.9% (IC 95%: 2.67-8.83) en AP (p = 0.009, RR = 3.35). Los factores asociados con luxación fueron: a) AP con un OR de 6.18 (IC 95%: 1.99-19.26); b) paciente procedente del subsector de salud privado con un OR de 13.74 (IC 95%: 1.87-101.15); c) antecedente de hipotiroidismo con un OR de 3.51 (IC 95%: 1.09-11.29); d) artrosis secundarias a artritis inflamatorias y displasia con un OR de 5.24 (IC 95%: 1.16-23.66); e) centro quirúrgico número tres con un OR de 8.80 (IC 95%: 1.50-51.51).  Conclusiones:  La incidencia de luxación temprana estuvo dentro de los rangos habituales. El AP con mayor riesgo de inestabilidad por factores de riesgo preoperatorios.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Introduction:  In Uruguay, all replacements have been registered by law since 1980. Instability is the second cause of revision in hip replacements.  Objective:  To know the incidence of instability, and its relationship with the surgical approach.  Material and methods:  Observational and analytical study of a historical cohort of 1,738 hip replacements conducted in 2014. Random sample stratified according to the surgical approach: posterior (AP) and anterolateral (AAL). All patients who had suffered any dislocation were identified, their incidence was estimated and bivariate and multivariate tests were performed, to identify factors related, associated with the patient, to the surgeon (surgical approach and experience), to the environment, and to the implant.  Results:  633 patients, minimum follow-up of three years and 16 patients with dislocation, with an incidence of 1.95% (95% CI: 1.14-3.31) in general, 1.4% (95% CI: 0.64-3.03) in AAL and 4.9% (95% CI: 2.67-8.83) in AP (p = 0.009, RR = 3.35). Factors associated with dislocation were: a) AP with an OR of 6.18 (CI 95%: 1.99-19.26); b) patient from the private health subsector with an OR of 13.74 (95% CI: 1.87-101.15); c) antecedent of hypothyroidism with an OR of 3.51 (IC 95%: 1.09-11.29); d) osteoarthritis secondary to inflammatory arthritis and dysplasia with an OR of 5.24 (CI 95%: 1.16-23.66); e) surgical center number three with an OR of 8.80 (CI 95%: 1.50-51.51).  Conclusions:  The incidence of early dislocation was within the usual ranges. Posterior surgical approach with increased risk of instability from preoperative risk factors.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Artroplastía de cadera]]></kwd>
<kwd lng="es"><![CDATA[dislocación]]></kwd>
<kwd lng="es"><![CDATA[inestabilidad]]></kwd>
<kwd lng="es"><![CDATA[abordaje de cadera]]></kwd>
<kwd lng="es"><![CDATA[artroplastía Charnley]]></kwd>
<kwd lng="es"><![CDATA[Registro Nacional de Artroplastía]]></kwd>
<kwd lng="en"><![CDATA[Hip arthroplasty]]></kwd>
<kwd lng="en"><![CDATA[dislocation]]></kwd>
<kwd lng="en"><![CDATA[instability]]></kwd>
<kwd lng="en"><![CDATA[hip approach]]></kwd>
<kwd lng="en"><![CDATA[Charnley arthroplasty]]></kwd>
<kwd lng="en"><![CDATA[Arthroplasty National Register]]></kwd>
</kwd-group>
</article-meta>
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</person-group>
<article-title xml:lang=""><![CDATA[Factors predisposing to dislocation after primary total hip arthroplasty: a multivariate analysis]]></article-title>
<source><![CDATA[J Arthroplasty]]></source>
<year>2002</year>
<volume>17</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>282-8</page-range></nlm-citation>
</ref>
</ref-list>
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</article>
