Hasart Olaf, Poepplau Berry M, Asbach Patrick, Perka Carsten, Wassilew Georgi I
Charité Orthopaedic Department, Center for Musculoskeletal Surgery, Charité Universitätsmedizin, 10117 Berlin, Germany.
Orthopedics. 2009 Oct;32(10 Suppl):6-10. doi: 10.3928/01477447-20090915-50.
Intraoperative landmarks are used in image-free navigation systems. The ultrasound-based navigation systems try to overcome the problems of positional deviation associated with soft tissue. Our study analyzed the accuracy of ultrasound-based navigation of cup positioning compared with postoperative 3-dimensional (3D) computed tomography scans of cup positioning. Twenty-five ultrasound-navigated total hip arthroplasties (THAs) were analyzed. The difference between the intraoperative cup orientation (navigation) and the postoperative cup position (CT) was evaluated. The average difference between intraoperative navigation and postoperative CT measurements was 2.8 degrees (SD+/-1.8 degrees ) for abduction and 2.2 degrees (SD+/-1.6 degrees ) for anteversion. Therefore, we recommend ultrasound-based navigation as an exact tool for cup positioning in THA.
术中标志用于无图像导航系统。基于超声的导航系统试图克服与软组织相关的位置偏差问题。我们的研究分析了与术后髋臼杯位置的三维（3D）计算机断层扫描相比，基于超声的髋臼杯定位导航的准确性。分析了25例超声导航全髋关节置换术（THA）。评估了术中髋臼杯方向（导航）与术后髋臼杯位置（CT）之间的差异。术中导航与术后CT测量的平均差异为外展2.8度（标准差±1.8度），前倾角2.2度（标准差±1.6度）。因此，我们推荐基于超声的导航作为THA中髋臼杯定位的精确工具。
