Limitations of Imageless Computer-Assisted Navigation for Total Hip Arthroplasty
Limitations of Imageless Computer-Assisted Navigation for Total Hip Arthroplasty
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DOI：
10.1016/j.arth.2010.05.027
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发表时间：
2011-06-01
影响因子：
3.5
通讯作者：
Makhsous, Mohsen
中科院分区：
文献类型：
--
作者：
Lin, Fang;Lim, Dohyung;Makhsous, Mohsen
我们前瞻性地评价了使用无影像计算机导航系统或使用传统手动技术的全髋关节置换术中髋臼假体的放置。与导航组相比，手动组获得的杯形定位具有更大的方差和更大的放置误差。3例因骨盆倾斜过大、骨盆定位不可靠而放弃导航功能。在这项研究中，计算机导航系统有助于提高全髋关节置换术中髋臼假体放置的准确性。术中导航读数与计算机断层扫描值之间的差异表明，依赖于通过窗帘和组织触诊骨性标志是该方法的局限性。此外，骨盆倾斜度的变化对杯子放置有影响，需要进一步研究。
We prospectively evaluated acetabular cup placement in total hip arthroplasty with an imageless computer navigation system or using conventional manual technique. The achieved cup orientation in the manual group had substantially larger variances and greater placement error than the navigation cases. The use of navigation was abandoned in 3 cases because of excessive pelvic tilt and unreliable registration of the pelvis. Computer navigation system helped improve the accuracy of the acetabular cup placement for total hip arthroplasty in this study. The variation between the intraoperative navigation readings and the computed tomographic values suggests that relying on palpation of bony landmarks through drapes and tissue is a limitation of this method. Further, the variation in pelvic tilt has an effect on cup placement that requires further studies.