Comparison of navigation accuracy in THA between the mini-anterior and -posterior approaches
Comparison of navigation accuracy in THA between the mini-anterior and -posterior approaches
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DOI：
10.1002/rcs.226
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发表时间：
2009-03-01
影响因子：
2.5
通讯作者：
Sugano, Nobuhiko
中科院分区：
文献类型：
--
作者：
Hananouchi, Takehito;Takao, Masaki;Sugano, Nobuhiko
基于ct的髋关节导航的准确性可能取决于手术入路，导致植入物对准的准确性不同。方法我们对40例匹配良好的患者（前路或后路，各20髋）进行了初级无骨水泥全髋关节置换术（THA）和小切口手术（MIS），采用导航和表面配准。我们使用术后计算机断层扫描（CT）研究了杯子对准，并比较了两种入路的导航精度，即术中和术后杯子对准的差异。结果两种方法治疗效果无显著性差异。前入路外展和前倾的平均导航精度分别为2.0度（SD 1.4度）和2.7度（SD 1.9度），后入路的平均导航精度分别为2.4度（SD 2.0度）和2.0度（SD 1.4度）。所有的杯状排列都在目标方向的100以内。结论：这种基于ct的mist - tha导航方法提供了导航精度，两种方法之间没有显着差异，并且有利于杯的对齐。版权所有(C) 2008约翰威利父子有限公司
Background The accuracy of a CT-based hip navigation might depend on surgical approaches, resulting in varying accuracy of implant alignment.Methods We performed primary cementless total hip arthroplasty (THA) with mini-incision surgery (MIS) to 40 well-matched patients (anterior or posterior approaches, 20 hips each), using navigation with surface registration. We investigated cup alignment using postoperative computed tomography (CT) and compared the navigation accuracy between the two approaches, i.e. the difference between intra-operative and postoperative alignments of the cup.Results There was no significant difference between the two approaches. The mean navigation accuracies in abduction and anteversion were 2.0 degrees (SD 1.4 degrees) and 2.7 degrees (SD 1.9 degrees), respectively, in the anterior approach, and 2.4 degrees (SD 2.0 degrees) and 2.0 degrees (SD 1.4 degrees), respectively, in the posterior approach. All cup alignments were within 100 of the target orientation.Conclusions This CT-based navigation for MIS-THA provides navigation accuracy without significant differences between the two approaches and with favourable alignment of the cup. Copyright (C) 2008 John Wiley & Sons, Ltd.