Clark Tanner C, Schmidt Frank H
University of Washington School of Medicine, 1959 NE Pacific Street, Seattle, WA 98195, USA.
Big Horn Basin Bone and Joint, 720 Lindsay Lane, Suite C, Cody, WY 82414, USA.
ISRN Orthop. 2013 Jun 24;2013:794827. doi: 10.1155/2013/794827. eCollection 2013.
Background. Since the introduction of robot-assisted navigation in primary total knee arthroplasty (TKA), there has been little research conducted examining the efficiency and accuracy of the system compared to computer-assisted navigation systems. Objective. To compare the efficiency and accuracy of Praxim robot-assisted navigation (RAN) and Stryker computer-assisted navigation (CAN) in primary TKA. Methods. This was a retrospective study consisting of 52 patients who underwent primary TKA utilizing RAN and 29 patients utilizing CAN. The primary outcome measure was navigation time. Secondary outcome measures included intraoperative final mechanical axis alignment, intraoperative robot-assisted bone cut accuracy, tourniquet time, and hospitalization length. Results. RAN navigation times were, on average, 9.0 minutes shorter compared to CAN after adjustment. The average absolute intraoperative malalignment was 0.5° less in the RAN procedures compared to the CAN procedures after adjustment. Patients in the RAN group tended to be discharged 0.6 days earlier compared to patients in the CAN group after adjustment. Conclusions. Among patients undergoing TKA, there was decreased navigation time, decreased final malalignment, and decreased hospitalization length associated with the use of RAN when compared to CAN independent of age, BMI, and pre-replacement alignment.
背景。自从在初次全膝关节置换术（TKA）中引入机器人辅助导航以来，与计算机辅助导航系统相比，对该系统的效率和准确性进行研究的较少。目的。比较Praxim机器人辅助导航（RAN）和史赛克计算机辅助导航（CAN）在初次TKA中的效率和准确性。方法。这是一项回顾性研究，包括52例行初次TKA并使用RAN的患者和29例行初次TKA并使用CAN的患者。主要结局指标是导航时间。次要结局指标包括术中最终机械轴对线、术中机器人辅助截骨准确性、止血带时间和住院时间。结果。调整后，RAN的导航时间平均比CAN短9.0分钟。调整后，RAN手术的术中平均绝对对线不良比CAN手术少0.5°。调整后，RAN组患者比CAN组患者平均提前0.6天出院。结论。在接受TKA的患者中，与CAN相比，使用RAN与导航时间缩短、最终对线不良减少和住院时间缩短相关，且与年龄、体重指数和置换前对线无关。
