<?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>S2306-41022024000500340</article-id>
<article-id pub-id-type="doi">10.35366/117382</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Silent surface osteosarcoma treated following the hemi-capanna technique. A case report]]></article-title>
<article-title xml:lang="es"><![CDATA[Osteosarcoma superficial silente tratado con la técnica hemi-capanna. Reporte de un caso]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Donadeu-Sánchez]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Manrique-Gamo]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Maroto]]></surname>
<given-names><![CDATA[RC]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alarcón]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cebrián-Parra]]></surname>
<given-names><![CDATA[JL]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Clínico San Carlos  ]]></institution>
<addr-line><![CDATA[Madrid ]]></addr-line>
<country>España</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>10</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>10</month>
<year>2024</year>
</pub-date>
<volume>38</volume>
<numero>5</numero>
<fpage>340</fpage>
<lpage>344</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2306-41022024000500340&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2306-41022024000500340&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2306-41022024000500340&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Introduction:  surface sarcomas are a rare entity that need correct diagnosis to differentiate parosteal (cPOS), periosteal and the high grade surface osteosarcomas (HGSO). HGSO has malignant behavior similarities with osteosarcomas and wide resection is the key to a successful treatment.1 The Capanna and Hemi-Capanna reconstruction techniques have being developed in order to avoid amputation after an oncological resection, allowing structural support from an allograft and biological advantages from a vascularised autograft.  Case presentation:  46 years old male presenting with knee pain and 4 × 3 cm soft tissue tumor on the right tibial surface diagnosed of High Grade Surface Osteosarcoma (HGSO). Was treated by oncological resection followed by reconstruction with allograft and ipsilateral fibula autograft following the «Hemi-Capanna» technique and pedicled medial gastrocnemius flap.  Conclusion:  sufficient evidence supports the use of the Capanna technique in major musculoskeletal reconstructions. The new «Hemi-Capanna» technique has less evidence but proves to be an easier surgical technique with good functional results and little complications.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Introducción:  los sarcomas de superficie son una entidad rara que necesita un diagnóstico correcto para diferenciar el parostio (cPOS), el perióstico y el osteosarcoma de superficie de alto grado (HGSO). HGSO tiene similitudes de comportamiento maligno con los osteosarcomas y la resección amplia es la clave para un tratamiento exitoso. Las técnicas de reconsrucción Capanna y Hemi-Capanna han sido desarrolladas para evitar la amputación después de una resección por cáncer, permitiendo el soporte estructural de un aloinjerto y las ventajas biológicas de un autoinjerto vascularizado.  Presentación del caso:  varón de 46 años que presenta dolor en rodilla y tumor de tejido blando de 4 × 3 cm en superficie tibial derecha diagnosticado con osteosarcoma de superficie de alto grado (OSAG). Se trató mediante resección oncológica seguida de reconstrucción con aloinjerto y autoinjerto de peroné ipsilateral siguiendo la técnica de «Hemi-Capanna» y colgajo pediculado de gastrocnemio medial.  Conclusión:  existe evidencia suficiente que respalda el uso de la técnica de Capanna en reconstrucciones musculoesqueléticas mayores. La nueva técnica «Hemi-Capanna» tiene menos evidencia, pero demuestra ser una técnica quirúrgica más sencilla, con buenos resultados funcionales y pocas complicaciones.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[osteosarcoma]]></kwd>
<kwd lng="en"><![CDATA[high grade surface osteosarcoma]]></kwd>
<kwd lng="en"><![CDATA[Capanna]]></kwd>
<kwd lng="en"><![CDATA[Hemi-Capanna]]></kwd>
<kwd lng="es"><![CDATA[osteosarcoma]]></kwd>
<kwd lng="es"><![CDATA[osteosarcoma superficial de alto grado]]></kwd>
<kwd lng="es"><![CDATA[Capanna]]></kwd>
<kwd lng="es"><![CDATA[Hemi-Capanna]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Nouri]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Ben-Maitigue]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Abid]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Nouri]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Abdelkader]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Bouaziz]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Surface osteosarcoma: Clinical features and therapeutic implications]]></article-title>
<source><![CDATA[J Bone Oncol]]></source>
<year>2015</year>
<volume>4</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>115-23</page-range></nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Momeni]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Weber]]></surname>
<given-names><![CDATA[KL]]></given-names>
</name>
<name>
<surname><![CDATA[Kovach]]></surname>
<given-names><![CDATA[SJ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A modification of an established method of intercalary extremity bone defect reconstruction: the &#8220;Hemi-Capanna&#8221; technique]]></article-title>
<source><![CDATA[Ann Plast Surg]]></source>
<year>2018</year>
<volume>81</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>240-3</page-range></nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Capanna]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Bufalini]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Campanacci]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A new technique for reconstructions of large metadiaphyseal bone defects: a combined graft (allograft shell plus vascularized fibula)]]></article-title>
<source><![CDATA[Orthop Traumatol]]></source>
<year>1993</year>
<volume>2</volume>
<page-range>159-77</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Harper]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Sathiadoss]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Saifuddin]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Sheikh]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A review of imaging of surface sarcomas of bone]]></article-title>
<source><![CDATA[Skeletal Radiol]]></source>
<year>2021</year>
<volume>50</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>9-28</page-range></nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kumar]]></surname>
<given-names><![CDATA[VS]]></given-names>
</name>
<name>
<surname><![CDATA[Barwar]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Khan]]></surname>
<given-names><![CDATA[SA]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Surface osteosarcomas: Diagnosis, treatment and outcome]]></article-title>
<source><![CDATA[Indian J Orthop]]></source>
<year>2014</year>
<volume>48</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>255-61</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Okada]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Unni]]></surname>
<given-names><![CDATA[KK]]></given-names>
</name>
<name>
<surname><![CDATA[Swee]]></surname>
<given-names><![CDATA[RG]]></given-names>
</name>
<name>
<surname><![CDATA[Sim]]></surname>
<given-names><![CDATA[FH]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[High grade surface osteosarcoma: A clinicopathologic study of 46 cases]]></article-title>
<source><![CDATA[Cancer]]></source>
<year>1999</year>
<volume>85</volume>
<page-range>1044-54</page-range></nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Staals]]></surname>
<given-names><![CDATA[EL]]></given-names>
</name>
<name>
<surname><![CDATA[Bacchini]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Bertoni]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[High-grade surface osteosarcoma: a review of 25 cases from the Rizzoli Institute]]></article-title>
<source><![CDATA[Cancer]]></source>
<year>2008</year>
<volume>112</volume>
<numero>7</numero>
<issue>7</issue>
<page-range>1592-9</page-range></nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Palmerín-Bucio]]></surname>
<given-names><![CDATA[ME]]></given-names>
</name>
<name>
<surname><![CDATA[Atencio-Chan]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Tecualt-Gómez]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Amaya-Zepeda]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Osteosarcoma de superficie de alto grado. Reporte de un caso]]></article-title>
<source><![CDATA[GAMO]]></source>
<year>2012</year>
<volume>11</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>203-8</page-range></nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Folpe]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Petur-Nielsen]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
</person-group>
<source><![CDATA[Bone and Soft Tissue Pathology]]></source>
<year>2022</year>
<volume>1</volume>
<edition>2nd</edition>
<publisher-loc><![CDATA[Philadelphia ]]></publisher-loc>
<publisher-name><![CDATA[Elsevier]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rougraff]]></surname>
<given-names><![CDATA[BT]]></given-names>
</name>
<name>
<surname><![CDATA[Simon]]></surname>
<given-names><![CDATA[MA]]></given-names>
</name>
<name>
<surname><![CDATA[Kneisl]]></surname>
<given-names><![CDATA[JS]]></given-names>
</name>
<name>
<surname><![CDATA[Greenberg]]></surname>
<given-names><![CDATA[DB]]></given-names>
</name>
<name>
<surname><![CDATA[Mankin]]></surname>
<given-names><![CDATA[JH]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Limb salvage compared with amputation for osteosarcoma of the distal end of the femur. A long-term oncological, functional, and quality-of-life study]]></article-title>
<source><![CDATA[J Bone Joint Surg Am]]></source>
<year>1994</year>
<volume>76</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>649-56</page-range></nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Donati]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Capanna]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Campanacci]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Del Ben]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Ercolani]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Masetti]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The use of massive bone allografts for intercalary reconstruction and arthrodeses after tumor resection. A multicentric European study]]></article-title>
<source><![CDATA[Chir Organi Mov]]></source>
<year>1993</year>
<volume>78</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>81-94</page-range></nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Jayaramaraju]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Venkataramani]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Rajasekaran]]></surname>
<given-names><![CDATA[RB]]></given-names>
</name>
<name>
<surname><![CDATA[Agraharam]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Sabapathy]]></surname>
<given-names><![CDATA[SR]]></given-names>
</name>
<name>
<surname><![CDATA[Rajasekaran]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Modified Capanna&#8217;s technique (vascularized free fibula combined with allograft) as a single-stage procedure in post-traumatic long-segment defects of the lower end of the femur: outcome analysis of a series of 19 patients with an average gap of 14 cm]]></article-title>
<source><![CDATA[Indian J Plast Surg]]></source>
<year>2019</year>
<volume>52</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>296-303</page-range></nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bakri]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Stans]]></surname>
<given-names><![CDATA[AA]]></given-names>
</name>
<name>
<surname><![CDATA[Mardini]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Moran]]></surname>
<given-names><![CDATA[SL]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Combined massive allograft and intramedullary vascularized fibula transfer: the capanna technique for lower-limb reconstruction]]></article-title>
<source><![CDATA[Semin Plast Surg]]></source>
<year>2008</year>
<volume>22</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>234-41</page-range></nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Venkatramani]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Sabapathy]]></surname>
<given-names><![CDATA[SR]]></given-names>
</name>
<name>
<surname><![CDATA[Dheenadayalan]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Devendra]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Rajasekaran]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Reconstruction of post-traumatic long segment bone defects of the lower end of the femur by free vascularized fibula combined with allograft (modified Capanna&#8217;s technique)]]></article-title>
<source><![CDATA[Eur J Trauma Emerg Surg]]></source>
<year>2015</year>
<volume>41</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>17-24</page-range></nlm-citation>
</ref>
<ref id="B15">
<label>15</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Capanna]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Campanacci]]></surname>
<given-names><![CDATA[DA]]></given-names>
</name>
<name>
<surname><![CDATA[Belot]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Beltrami]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Manfrini]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Innocenti]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A new reconstructive technique for intercalary defects of long bones: the association of massive allograft with vascularized fibular autograft. Long-term results and comparison with alternative techniques]]></article-title>
<source><![CDATA[Orthop Clin North Am]]></source>
<year>2007</year>
<volume>38</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>51-60</page-range></nlm-citation>
</ref>
<ref id="B16">
<label>16</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Innocenti]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Abed]]></surname>
<given-names><![CDATA[YY]]></given-names>
</name>
<name>
<surname><![CDATA[Beltrami]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Delcroix]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Manfrini]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Capanna]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Biological reconstruction after resection of bone tumors of the proximal tibia using allograft shell and intramedullary free vascularized fibular graft: long-term results]]></article-title>
<source><![CDATA[Microsurgery]]></source>
<year>2009</year>
<volume>29</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>361-72</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
