Composite Bone Models in Orthopaedic Surgery Research and Education
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Auteurs : John Elfar ; Spencer StanburySource :
- The Journal of the American Academy of Orthopaedic Surgeons [ 1067-151X ] ; 2014.
Abstract
Composite bone models are increasingly used in orthopaedic biomechanics research and surgical education—applications that traditionally relied on cadavers. Cadaver bones are suboptimal for myriad reasons, including issues of cost, availability, preservation, and inconsistency between specimens. Further, cadaver samples disproportionately represent the elderly, whose bone quality may not be representative of the greater orthopaedic population. The current fourth-generation composite bone models provide an accurate reproduction of the biomechanical properties of human bone when placed under bending, axial, and torsional loads. The combination of glass fiber and epoxy resin components into a single phase has enabled manufacturing by injection molding. The high anatomic fidelity of the cadaver-based molds and negligible shrinkage properties of the epoxy resin results in a process that allows for excellent definition of anatomic detail in the cortical wall and optimized consistency of features between models. Recent biomechanical studies of composites have validated their use as a suitable substitute for cadaver specimens.
Url:
DOI: 10.5435/JAAOS-22-02-111
PubMed: 24486757
PubMed Central: 4251767
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<author><name sortKey="Stanbury, Spencer" sort="Stanbury, Spencer" uniqKey="Stanbury S" first="Spencer" last="Stanbury">Spencer Stanbury</name>
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<front><div type="abstract" xml:lang="en"><p id="P1">Composite bone models are increasingly used in orthopaedic biomechanics research and surgical education—applications that traditionally relied on cadavers. Cadaver bones are suboptimal for myriad reasons, including issues of cost, availability, preservation, and inconsistency between specimens. Further, cadaver samples disproportionately represent the elderly, whose bone quality may not be representative of the greater orthopaedic population. The current fourth-generation composite bone models provide an accurate reproduction of the biomechanical properties of human bone when placed under bending, axial, and torsional loads. The combination of glass fiber and epoxy resin components into a single phase has enabled manufacturing by injection molding. The high anatomic fidelity of the cadaver-based molds and negligible shrinkage properties of the epoxy resin results in a process that allows for excellent definition of anatomic detail in the cortical wall and optimized consistency of features between models. Recent biomechanical studies of composites have validated their use as a suitable substitute for cadaver specimens.</p>
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<front><journal-meta><journal-id journal-id-type="nlm-journal-id">9417468</journal-id>
<journal-id journal-id-type="pubmed-jr-id">21060</journal-id>
<journal-id journal-id-type="nlm-ta">J Am Acad Orthop Surg</journal-id>
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<title-group><article-title>Composite Bone Models in Orthopaedic Surgery Research and Education</article-title>
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<contrib-group><contrib contrib-type="author"><name><surname>Elfar</surname>
<given-names>John</given-names>
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<contrib contrib-type="author"><name><surname>Stanbury</surname>
<given-names>Spencer</given-names>
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<degrees>MD</degrees>
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<aff id="A1">Department of Orthopaedics and Rehabilitation, University of Rochester Medical Center, Rochester, NY</aff>
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<contrib-group><contrib contrib-type="author"><name><surname>Menorca</surname>
<given-names>Ron Martin Garcia</given-names>
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<contrib contrib-type="author"><name><surname>Reed</surname>
<given-names>Jeffrey Douglas</given-names>
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<aff id="A2">University of Rochester School of Medicine and Dentistry, Rochester</aff>
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<pub-date pub-type="nihms-submitted"><day>22</day>
<month>11</month>
<year>2014</year>
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<year>2014</year>
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<pub-date pub-type="pmc-release"><day>02</day>
<month>12</month>
<year>2014</year>
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<volume>22</volume>
<issue>2</issue>
<fpage>111</fpage>
<lpage>120</lpage>
<pmc-comment>elocation-id from pubmed: 10.5435/JAAOS-22-02-111</pmc-comment>
<abstract><p id="P1">Composite bone models are increasingly used in orthopaedic biomechanics research and surgical education—applications that traditionally relied on cadavers. Cadaver bones are suboptimal for myriad reasons, including issues of cost, availability, preservation, and inconsistency between specimens. Further, cadaver samples disproportionately represent the elderly, whose bone quality may not be representative of the greater orthopaedic population. The current fourth-generation composite bone models provide an accurate reproduction of the biomechanical properties of human bone when placed under bending, axial, and torsional loads. The combination of glass fiber and epoxy resin components into a single phase has enabled manufacturing by injection molding. The high anatomic fidelity of the cadaver-based molds and negligible shrinkage properties of the epoxy resin results in a process that allows for excellent definition of anatomic detail in the cortical wall and optimized consistency of features between models. Recent biomechanical studies of composites have validated their use as a suitable substitute for cadaver specimens.</p>
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