<?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>S2306-41022022000100058</article-id>
<article-id pub-id-type="doi">10.35366/106761</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Tratamiento de deformidad severa de la columna vertebral con modelos de impresión 3D]]></article-title>
<article-title xml:lang="en"><![CDATA[Treatment of severe spinal deformity with 3D printing models]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Evia-Cabral]]></surname>
<given-names><![CDATA[RG]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hermida-Ochoa]]></surname>
<given-names><![CDATA[EH]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Benavides-Rodríguez]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cuevas-Andrade]]></surname>
<given-names><![CDATA[JL]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Uribe-Cortés]]></surname>
<given-names><![CDATA[TB]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hermida-Ochoa]]></surname>
<given-names><![CDATA[JC]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad La Salle México Facultad Mexicana de Medicina ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital de Ortopedia para Niños «Dr. Germán Díaz Lombardo»  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Hospital de Ortopedia para Niños «Dr. Germán Díaz Lombardo»  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Instituto Politécnico Nacional Escuela Superior de Ingeniería Mecánica y Eléctrica (ESIME) Zacatenco ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Hospital de Ortopedia para Niños «Dr. Germán Díaz Lombardo» Centro de Investigación y Laboratorio de Biomecánica (CILAB) ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Hospital de Ortopedia para Niños «Dr. Germán Díaz Lombardo» Centro de Investigación y Laboratorio de Biomecánica (CILAB) ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>02</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>02</month>
<year>2022</year>
</pub-date>
<volume>36</volume>
<numero>1</numero>
<fpage>58</fpage>
<lpage>63</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2306-41022022000100058&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2306-41022022000100058&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2306-41022022000100058&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Introducción:  La escoliosis es una deformidad compleja que afecta los tres planos del eje de la columna vertebral. La asociación entre patología neuromuscular y la alineación vertebral fue descrita inicialmente en 1960. La patología neuromuscular es progresiva y resulta en anormalidades posturales. Las metas quirúrgicas en pacientes con deformidad neuromuscular engloban la corrección anatómica para la sedestación y deambulación, así como mejoría funcional. El estándar de oro de tratamiento es por vía posterior con tornillos transpediculares. La técnica de «manos libres» ahorra tiempo quirúrgico, disminuye la radiación al reducir el uso de fluoroscopía. El advenimiento de la tecnología de impresión 3D permite estudio preciso del área anatómica y detalle de la deformidad en sus tres planos. Este modelo puede ser esterilizado para guía transoperatoria. Paciente femenino de 13 años de edad que desarrolla escoliosis neuromuscular toracolumbar secundario a parálisis cerebral infantil (PCI) espástica, con instrumentación previa T11-L3 de la cual desarrolla curva severa proximal. Finalizada la segmentación del modelo tridimensional se detectó violación pedicular mayor a 2 mm hacia canal medular bilateral en los pedículos de L1 y L2 de instrumentación previa, displasia pedicular y se observaron las características morfológicas de los pedículos. La planeación tridimensional y el uso de guías quirúrgicas representan una herramienta para la planeación quirúrgica, sobre todo en casos severos y con displasia pedicular. Ayuda como guía quirúrgica para la colocación de tornillos transpediculares a manos libres con posible reducción de radiación y tiempo anestésico.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Introduction:  Scoliosis is a complex deformity that affects all three planes of the axis of the spine. The association between neuromuscular pathology and vertebral alignment was initially described in 1960. Neuromuscular pathology is progressive and results in postural abnormalities. Surgical goals in patients with neuromuscular deformity include anatomical correction for sedation and ambulation, as well as functional improvement. The gold standard of treatment is by posterior approach with transpedicular screws. The «hands-free» technique saves surgical time, decreases radiation by reducing the use of fluoroscopy. The advent of 3D printing technology allows precise study of the anatomical area and detail of the deformity in its three planes. This model can be sterilized for transoperative guidance. A 13-year-old female patient who develops thoracolumbar neuromuscular scoliosis secondary to spastic cerebral palsy (CP), with previous instrumentation T11-L3 of which he develops severe proximal curve. After the segmentation of the three-dimensional model, pedicle violation greater than 2 mm towards bilateral medullary canal was detected in the pedicles of L1 and L2 of previous instrumentation, pedicle dysplasia and the morphological characteristics of the pedicles were observed. Three-dimensional planning and the use of surgical guides represent a tool for surgical planning, especially in severe cases and with pedicle dysplasia. It helps as a surgical guide for the placement of hands-free transpedicular screws with possible reduction of radiation and anesthetic time.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Escoliosis]]></kwd>
<kwd lng="es"><![CDATA[cirugía]]></kwd>
<kwd lng="es"><![CDATA[modelos 3D]]></kwd>
<kwd lng="es"><![CDATA[planeación preoperatoria]]></kwd>
<kwd lng="en"><![CDATA[Scoliosis]]></kwd>
<kwd lng="en"><![CDATA[surgery]]></kwd>
<kwd lng="en"><![CDATA[3D models]]></kwd>
<kwd lng="en"><![CDATA[preoperative planning]]></kwd>
</kwd-group>
</article-meta>
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