Orthopaedic Research Unit, Institute of Health and Biomedical Innovation, Queensland University of Technology, The Prince Charles Hospital, Brisbane, Queensland, Australia.
J Arthroplasty. 2013 Mar;28(3):521-5. doi: 10.1016/j.arth.2012.08.016. Epub 2012 Nov 10.
The aim of this study was to perform a biomechanical analysis of the cement-in-cement (c-in-c) technique for fixation of selected Vancouver Type B1 femoral periprosthetic fractures and to assess the degree of cement interposition at the fracture site. Six embalmed cadaveric femora were implanted with a cemented femoral stem. Vancouver Type B1 fractures were created by applying a combined axial and rotational load to failure. The femora were repaired using the c-in-c technique and reloaded to failure. The mean primary fracture torque was 117 Nm (SD 16.6, range 89-133). The mean revision fracture torque was 50 Nm (SD 16.6, range 29-74), which is above the torque previously observed for activities of daily living. Cement interposition at the fracture site was found to be minimal.
本研究旨在对选定的温哥华 B1 型股骨假体周围骨折的水泥-水泥（c-in-c）固定技术进行生物力学分析，并评估骨折部位的水泥介入程度。六具防腐的尸体股骨被植入了一个水泥固定的股骨柄。通过施加轴向和旋转复合负荷至失效来创建温哥华 B1 型骨折。使用 c-in-c 技术修复股骨，并重新加载至失效。初次骨折的平均扭矩为 117 Nm（SD 16.6，范围 89-133）。修正骨折的平均扭矩为 50 Nm（SD 16.6，范围 29-74），高于日常生活活动中观察到的扭矩。在骨折部位发现水泥介入程度很小。
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