计算机辅助导航与传统导向系统在全膝关节置换术中的比较：一项前瞻性研究。
Comparison of total knee arthroplasty using computer-assisted navigation versus conventional guiding systems: a prospective study.
作者信息
Pang C H, Chan W L, Yen C H, Cheng S C, Woo S B, Choi S T, Hui W K, Mak K H
机构信息
Department of Orthopaedics and Traumatology, Kwong Wah Hospital, 25 Waterloo Road, Hong Kong.
出版信息
J Orthop Surg (Hong Kong). 2009 Aug;17(2):170-3. doi: 10.1177/230949900901700209.
PURPOSE
To compare knee alignments in total knee arthroplasty (TKA) using computer-assisted navigation versus conventional guiding systems.
METHODS
Five men and 49 women aged 49 to 79 years underwent TKA for primary osteoarthritis of the knee with varus deformity. All valgus knees were associated with inflammatory arthritis and thus excluded. Computer-assisted navigation was used for the first 35 TKAs, whereas conventional extramedullary tibial and intramedullary femoral guiding systems were used for the next 35 TKAs. The mechanical axis, coronal tibial and femoral angles, sagittal tibial and femoral angles in the 2 groups were compared.
RESULTS
Sagittal tibial and femoral angles aligned more optimally in TKAs using computer-assisted navigation. In the respective computer-assisted navigation and conventional guiding systems, 33 (94%) and 26 (74%) of the TKAs attained a postoperative mechanical axis of <3 degrees varus/valgus.
CONCLUSION
Computer-assisted navigation gives a more consistent alignment correction and reduces outliers during implant positioning.
目的
比较在全膝关节置换术（TKA）中使用计算机辅助导航与传统导向系统时的膝关节对线情况。
方法
5名男性和49名年龄在49至79岁之间的女性因膝关节内翻畸形的原发性骨关节炎接受了TKA手术。所有外翻膝关节均与炎性关节炎相关，因此被排除。前35例TKA使用计算机辅助导航，而后35例TKA使用传统的髓外胫骨和髓内股骨导向系统。比较两组的机械轴、冠状位胫骨和股骨角度、矢状位胫骨和股骨角度。
结果
在使用计算机辅助导航的TKA中，矢状位胫骨和股骨角度的对线更理想。在各自的计算机辅助导航和传统导向系统中，分别有33例（94%）和26例（74%）的TKA术后机械轴内翻/外翻角度<3度。
结论
计算机辅助导航能提供更一致的对线矫正，并减少植入物定位过程中的异常情况。
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