Effects of Bone Block Position and Orientation within the Tibial Tunnel for Posterior Cruciate Ligament Graft Reconstructions: A Cyclic Loading Study of Bone-Patellar Tendon-Bone Allografts

作者: Keith Markolf , Mark Davies , Bojan Zoric , David McAllister

DOI: 10.1177/03635465030310050701

关键词: Orthopedic surgeryTibiaPosterior Cruciate Ligament ReconstructionTibial tunnelFixation (histology)MedicinePosterior cruciate ligamentCadaverTendonAnatomy

摘要: BackgroundPosterior laxity occurring after posterior cruciate ligament reconstruction with a tibial tunnel could be related to thinning and permanent elongation of the graft as it is cyclically loaded in vivo.HypothesisThe orientation position bone block within will have significant effect on cyclic loading.Study DesignControlled laboratory study.MethodsIn test series 1 (27 fresh-frozen pairs), all blocks were positioned flush opening tunnel; was oriented facing posteriorly, whereas its pair tested anteriorly. In 2 (20 grafts posteriorly; had opening, recessed cm from opening.ResultsIn 1, 3 27 bloc...

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