Influence of navigation system updates on total knee arthroplasty
Influence of navigation system updates on total knee arthroplasty
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DOI：
10.1186/2052-1847-5-10
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发表时间：
2013-12-01
影响因子：
1.9
通讯作者：
Nakagawa, Takumi
中科院分区：
文献类型：
--
作者：
Inui, Hiroshi;Taketomi, Shuji;Nakagawa, Takumi
背景资料：本研究的目的是评价无图像计算机辅助导航系统更新对全膝关节置换术结果的影响。方法：33例膝关节置换使用斯特赖克3.1无图像导航系统，49例膝关节置换使用斯特赖克4.0系统。一名外科医生作为主刀医生或第一助理参与所有手术。所有患者均接受了斯特赖克Scopio NRG CR全膝关节假体。我们比较了使用X线片和CT扫描测量的部件定位的准确性、手术时间和术后1年的临床结果。髋-膝-踝、股骨和胫骨前角平均为179.8 °（理想植入85%），89.8度（88%），90.4度（88%），3.1组分别为179.5度（96%），90.6度（92%），4.0组为90.2度（94%）。3.1组和4.0组的平均矢状面胫骨组件角度分别为85.5度（82%）和85.6度（92%）。3.1组的平均旋转股骨和胫骨部件角度分别为-0.5度（81%）、-0.7度（73%），4.0组的平均旋转股骨和胫骨部件角度分别为0.0度（84%）、0.4度（72%）。关于部件定位，没有统计学显著性发现。3.1组手术时间明显延长（3.1组：137 min，4.1组：125 min，P < 0.01）。术后临床结局无显著差异。结论：导航系统从斯特赖克3.1更新为斯特赖克4.0缩短了12 min的手术时间。但是，在组件定位和临床结局方面没有统计学显著性发现。
Background: The purpose of this study was to evaluate the influence of image-free computer-assisted navigation system update on outcome in total knee arthroplasty.Methods: Thirty-three knees were replaced using the Stryker 3.1 image-free navigation system and 49 knees were replaced using the Stryker 4.0 system. One surgeon took part in all procedures as chief surgeon or first assistant. All patients received the Stryker Scopio NRG CR total knee prosthesis. We compared the accuracy of component positioning measured using radiographs and CT scans, operating time and clinical outcome 1 year after surgery.Results: The mean hip-knee-ankle, frontal femoral and tibial component angle were 179.8 degrees (ideally implanted 85%), 89.8 degrees (88%), 90.4 degrees (88%) respectively for the 3.1 group and 179.5 degrees (96%), 90.6 degrees (92%), 90.2 degrees (94%) for the 4.0 group. The mean sagittal tibial component angle was 85.5 degrees (82%) for the 3.1 group and 85.6 degrees (92%) for the 4.0 group. The mean rotational femoral and tibial component angle were -0.5 degrees (81%), -0.7 degrees (73%) for the 3.1 group and 0.0 degrees (84%), 0.4 degrees (72%) for the 4.0 group. There were no statistically significant findings with regard to component positioning. Operating time was significantly longer in the 3.1 group (3.1 group: 137 min, 4.1group: 125 min, P < 0.01). No significant difference was detected in postoperative clinical outcome.Conclusion: The navigation system update from Stryker 3.1 to Stryker 4.0 reduced operating time by 12 min. However, there were no statistically significant findings with regard to component positioning and clinical outcome.