Department of Elective Orthopaedics, Royal Perth Hospital, Perth, Western Australia, Australia.
J Arthroplasty. 2013 Jan;28(1):14-9. doi: 10.1016/j.arth.2012.03.003.
This study aims to evaluate component alignment in a large cohort of total knee arthroplasties (TKAs) and ascertain whether alignment in TKAs undergoing postoperative manipulation under anesthetic is significantly different from those achieving good function. A retrospective review of 281 consecutive primary TKAs was performed. All TKAs underwent computed tomographic scanning (Perth computed tomography knee protocol). Of 281 TKAs, 21 (7.4%) underwent manipulation, performed at a mean of 8.1 weeks (range, 3-14 weeks) after surgery. No statistically significant difference was seen between groups for any of 12 parameters of alignment. Postoperative stiffness with the need for manipulation under anesthetic is multifactorial in origin. This study found insufficient evidence to support the theory that component alignment contributes significantly to the etiology of this difficult problem.
本研究旨在评估大量全膝关节置换术（TKA）中的组件对齐情况，并确定在接受术后麻醉下操作的 TKA 中，其对齐情况与那些功能良好的 TKA 是否存在显著差异。对 281 例连续原发性 TKA 进行了回顾性分析。所有 TKA 均接受计算机断层扫描（珀斯计算机断层扫描膝关节方案）。在 281 例 TKA 中，有 21 例（7.4%）接受了手术，在术后平均 8.1 周（范围为 3-14 周）进行了操作。在 12 个对齐参数中，两组之间没有统计学上的显著差异。术后出现需要麻醉下操作的僵硬是多因素引起的。本研究没有充分的证据支持组件对齐对这一难题的病因有重大影响的理论。
