Department of Elective Orthopaedics, Royal Perth Hospital, Perth, Western Australia.
J Arthroplasty. 2011 Dec;26(8):1224-7. doi: 10.1016/j.arth.2011.01.011. Epub 2011 Apr 7.
A retrospective review of 146 patients undergoing navigated total knee arthroplasty (NTKA) and 181 patients undergoing conventional total knee arthroplasty (CTKA) was undertaken to establish whether NTKA, with its avoidance of intramedullary instrumentation, resulted in less early postoperative morbidity than CTKA. Cohorts were well matched in terms of age, sex, body mass index, and American Society of Anesthesiologists grade. Statistically significantly longer operative and tourniquet times were seen with NTKA. Blood transfusion requirements were significantly higher in CTKA. No statistically significant differences were seen in any other measure of postoperative morbidity (length of stay, hemoglobin drop, transfusion rate, postoperative anemia, time to achieve 70° flexion, and thromboembolic phenomena). In large, well-matched cohorts, NTKA offered no benefit in terms of early postoperative morbidity when compared with conventional jig-based techniques.
对 146 例行导航全膝关节置换术（NTKA）和 181 例行传统全膝关节置换术（CTKA）的患者进行回顾性分析，以确定是否 NTKA 避免了髓内器械，从而减少了术后早期并发症的发生，而不是 CTKA。两组在年龄、性别、体重指数和美国麻醉医师协会分级方面均匹配良好。NTKA 的手术和止血带时间明显延长。CTKA 的输血需求明显更高。在任何其他术后并发症的衡量指标（住院时间、血红蛋白下降、输血率、术后贫血、达到 70°屈曲的时间和血栓栓塞现象）方面，均未发现统计学显著差异。在大型、匹配良好的队列中，与传统基于夹具的技术相比，NTKA 在术后早期并发症方面没有优势。
