<?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>0864-215X</journal-id>
<journal-title><![CDATA[Revista Cubana de Ortopedia y Traumatología]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Cubana Ortop Traumatol]]></abbrev-journal-title>
<issn>0864-215X</issn>
<publisher>
<publisher-name><![CDATA[Editorial Ciencias Médicas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0864-215X2023000400003</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Reparación quirúrgica de fracturas de fémur distal con biomodelos impresos 3D]]></article-title>
<article-title xml:lang="en"><![CDATA[Surgical repair of distal femur fractures with 3D printed biomodels]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Callupe]]></surname>
<given-names><![CDATA[Iván]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cubas Llalle]]></surname>
<given-names><![CDATA[Wildor Samir]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valderrama-Saldaña]]></surname>
<given-names><![CDATA[Mayra]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Regional Hipólito Unanue  ]]></institution>
<addr-line><![CDATA[Tacna ]]></addr-line>
<country>Perú</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Hospital Nacional Edgardo Rebagliati Martins  ]]></institution>
<addr-line><![CDATA[ Lima]]></addr-line>
<country>Perú</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<volume>37</volume>
<numero>4</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0864-215X2023000400003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0864-215X2023000400003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0864-215X2023000400003&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  Las fracturas complejas de fémur distal AO/AOT tipo 33C3.3 constituyen un reto para los ortopedistas debido a la dificultad de su tratamiento y las complicaciones asociadas. El planeamiento y procedimiento quirúrgicos emplean placas condilares, pero estas se asocian a la pérdida de la fijación y al colapso de la reducción.  Objetivo:  Describir la planificación preoperatoria de una fractura de fémur distal AO/AOT 33C3.3 con bioimpresión 3D y reconstrucción por computadora.  Presentación del caso:  Paciente masculino de 34 años con fractura izquierda conminuta del fémur distal, AO/AOT tipo 33C3.3, por un accidente de tránsito. El planeamiento y el tratamiento quirúrgicos se realizaron exitosamente con la impresión y reconstrucción de biomodelos 3D. Basados en las imágenes tomográficas del paciente, se identificaron los principales fragmentos, la secuencia de reducción, la cantidad y la posición de los implantes a utilizar.  Conclusiones:  La planificación preoperatoria resulta una etapa de vital importancia en el manejo de fracturas complejas. Las técnicas convencionales pueden optimizarse con la cirugía asistida por computadora y reconstrucción con biomodelos 3D impresos. Esta novedosa propuesta permitirá el adecuado uso de materiales, una óptima secuencia de reducción, mejor estabilidad de la fractura y menor riesgo de complicaciones quirúrgicas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  Complex distal femur fractures AO/AOT type 33C3.3 constitute a challenge for orthopedists due to the difficulty of their treatment and associated complications. The surgical planning and procedure use condylar plates; but these are associated with loss of fixation and collapse of the reduction.  Objective:  To describe preoperative planning for an AO/AOT 33C3.3 distal femur fracture with 3D bioprinting and computer reconstruction.  Case report:  The case of a 34-year-old male patient is reported. He has comminuted left fracture of the distal femur, AO/AOT type 33C3.3, due to a traffic accident. Surgical planning and treatment were successfully performed with 3D biomodel printing and reconstruction. Based on the patient's tomographic images, the main fragments, the reduction sequence, the number and position of the implants to be used were identified.  Conclusions:  Preoperative planning is a critically important stage in managing complex fractures. Conventional techniques can be optimized with computer-assisted surgery and reconstruction with 3D printed biomodels. This novel proposal will allow the appropriate use of materials, optimal reduction sequence, better stability of the fracture and lower risk of surgical complications.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[impresión 3D]]></kwd>
<kwd lng="es"><![CDATA[fracturas complejas]]></kwd>
<kwd lng="es"><![CDATA[fémur distal]]></kwd>
<kwd lng="es"><![CDATA[planificación operatoria]]></kwd>
<kwd lng="en"><![CDATA[3D printing]]></kwd>
<kwd lng="en"><![CDATA[complex fractures]]></kwd>
<kwd lng="en"><![CDATA[distal femur]]></kwd>
<kwd lng="en"><![CDATA[operative planning]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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