McMaster University, Hamilton, Ontario, Canada.
J Arthroplasty. 2012 Feb;27(2):271-7. doi: 10.1016/j.arth.2011.04.038. Epub 2011 Jun 24.
This retrospective study examined the relationship between the mechanical axis of the knee throughout its functional arc and functional outcomes in patients with computer-assisted navigation total knee arthroplasty. Data on final intraoperative functional arc alignment were obtained on 76 patients who had computer-assisted navigation total knee arthroplasty over a 2-year period and correlated with scores from postoperative Short Form 12 and Western Ontario and McMaster Universities functional outcome surveys. No correlation was found between functional arc alignment and outcomes from Western Ontario and McMaster Universities or Short Form 12 surveys; however, subgroup analysis of patients with more than 3° average final intraoperative alignment throughout the functional arc of motion demonstrated increased difficulty with daily activities (P = .05). The results indicate that patients with more than 3° average alignment throughout the functional arc of motion perform more poorly with daily activities postoperatively.
本回顾性研究探讨了在计算机辅助导航全膝关节置换术中，膝关节功能弧全程的机械轴与患者功能结果之间的关系。对 76 例在 2 年内接受计算机辅助导航全膝关节置换术的患者的最终术中功能弧对线数据进行了研究，并与术后短期 12 项和安大略西部和麦克马斯特大学功能结果调查的评分相关。在 Western Ontario 和 McMaster Universities 或短期 12 项调查的结果中，没有发现功能弧对线与结果之间的相关性；然而，对在整个运动功能弧中平均最终术中对线超过 3°的患者进行亚组分析表明，日常活动的难度增加（P =.05）。结果表明，在整个运动功能弧中平均对线超过 3°的患者术后日常活动表现更差。
