<?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>S2306-41022023000300137</article-id>
<article-id pub-id-type="doi">10.35366/113070</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Factores clínicos y radiográficos asociados a la severidad de infiltración grasa paraespinal en pacientes con enfermedad lumbar degenerativa]]></article-title>
<article-title xml:lang="en"><![CDATA[Clinical and radiographic factors associated with the severity of paraspinal fatty infiltration in patients with degenerative low back disease]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ruiz-Treviño]]></surname>
<given-names><![CDATA[AS]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Miranda-González]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-González]]></surname>
<given-names><![CDATA[OG]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez-Pérez]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González Ramírez]]></surname>
<given-names><![CDATA[JG]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández Sepúlveda]]></surname>
<given-names><![CDATA[EU]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Guanajuato Hospital Regional de Alta Especialidad del Bajío Departamento de Neurociencias. Servicio de Cirugía de Columna]]></institution>
<addr-line><![CDATA[León Gto]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2023</year>
</pub-date>
<volume>37</volume>
<numero>3</numero>
<fpage>137</fpage>
<lpage>142</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2306-41022023000300137&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2306-41022023000300137&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2306-41022023000300137&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Introducción:  la enfermedad lumbar degenerativa (ELD) es un espectro de cambios patológicos desde la degeneración discal, la hernia discal, la espondilolistesis y el conducto lumbar estrecho. El dolor que se le asocia es multifactorial. Los espasmos musculares son de las causas más frecuentes. La relación que guarda la degeneración muscular y la ELD ya ha sido estudiada en múltiples trabajos, destacando el realizado por Kjaer y colaboradores.  Objetivo:  determinar la prevalencia y severidad de la degeneración grasa en el mutifidus spinae, y estudiar su relación con variables clínicas y radiográficas.  Material y métodos:  estudio observacional y analítico. Se incluyeron pacientes diagnosticados con: hernia discal, conducto lumbar estrecho o escoliosis degenerativa. Se clasificaron de acuerdo con escala de Kjaer para infiltración grasa paraespinal en alguno de tres grupos. Se analizaron variables clínicas: edad, tabaquismo, obesidad, presencia de dolor tipo axial, temporalidad del dolor, severidad del dolor expresada con escala visual análoga (EVA); y radiográficas: número de segmento enfermos, segmentos involucrados, diagnóstico por imagen y presencia de espondilolistesis.  Resultados:  se incluyeron 56 pacientes con edad promedio de 52.5 años (rango 16 a 80) con predominio del sexo femenino (62.5%). Los diagnósticos fueron lumbalgia inespecífica (1.8%), hernia discal (42.9%), conducto lumbar estrecho (46.4%) y conducto lumbar con deformidad en escoliosis degenerativa (8.9%). La distribución entre los tres grupos descritos por Kjaer fue la siguiente: 44.6% fueron clasificados con un puntaje de infiltración grasa de 2. En los grupos 1 y 0, se clasificaron 39.3 y 16.1%, respectivamente. Las variables relacionadas con mayor infiltración grasa fueron: edad &gt; 60 años, diagnósticos de conducto lumbar estrecho y hernia discal; obesidad, espondilolistesis &lt; 2 segmentos vertebrales involucrados. El dolor mecánico y EVA &gt; 8 puntos no se relacionaron con mayor degeneración muscular.  Conclusiones:  la infiltración grasa está presente en todos los pacientes con alguna de las formas de ELD. La mayoría de los pacientes &gt; 60 años con procesos degenerativos avanzados tienen mayor severidad de infiltración. Otras variables relacionadas son: obesidad, espondilolistesis y enfermedad &lt; 2 segmentos vertebrales. No hay relación entre mayor porcentaje de infiltración grasa y dolor axial o puntajes más altos de dolor.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Introduction:  Degenerative lumbar disease (DLE) is a spectrum of pathological changes from disc degeneration, herniated disc, spondylolisthesis and lumbar canal stenosis. The pain associated with it is multifactorial. Muscle cramps are among the most frequent causes. The relationship between muscle degeneration and DLE has already been studied in the past in multiple studies, highlighting the one carried out by Kjaer &amp; cols.  Objective:  to determine the prevalence and severity of fatty degeneration in mutifidus spinae, and to study its relationship with clinical and radiographic factors.  Material and methods:  observational and analytical study. Patients diagnosed with: herniated disc, lumbar canal stenosis or degenerative scoliosis were included. They were classified according to the Kjaer scale for paraspinal fatty infiltration in one of three groups. Clinical variables were analyzed: age, smoking, obesity, the presence of axial pain, temporality of pain, severity expressed with a visual analog scale (VAS); and radiographic: number of diseased segments, involved segments, diagnostic imaging and the presence of spondylolisthesis.  Results:  56 patients with an average age of 52.5 years (16 to 80) with a predominance of females with 62.5% were included. The diagnoses were nonspecific low back pain (1.8%), herniated disc (42.9%), narrow lumbar duct (46.4%) and lumbar duct with degenerative scoliosis deformity (8.9%). The distribution among the three groups described by Kjaer was as follows: 44.6% were classified with a fat infiltration score of 2. In groups 1 and 0, 39.3% and 16.1% were classified respectively. The variables significantly related to greater fat infiltration were: age &gt; 60 years, diagnoses of lumbar canal stenosis and herniated disc; obesity, spondylolisthesis &lt; 2 vertebral segments involved. Axial pain and VAS &gt; 8 points were not related to greater muscle degeneration.  Conclusions:  fatty infiltration is present in all patients with some of the forms of DLE. Most patients &gt; 60 years of age with advanced degenerative processes have a greater severity of infiltration. Other related variables are: obesity, spondylolisthesis and disease of &lt; 2 vertebral segments. There is no relationship between a higher percentage of fatty infiltration and axial pain or higher VAS scores.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[lumbalgia]]></kwd>
<kwd lng="es"><![CDATA[infiltración de grasa paraespinal]]></kwd>
<kwd lng="es"><![CDATA[conducto lumbar estrecho]]></kwd>
<kwd lng="en"><![CDATA[lumbago]]></kwd>
<kwd lng="en"><![CDATA[infiltration of paraspinal fat]]></kwd>
<kwd lng="en"><![CDATA[narrow lumbar canal]]></kwd>
</kwd-group>
</article-meta>
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