髋臼位置变异性降低：使用导航的直接前路手术入路
Reduced variability in cup positioning: the direct anterior surgical approach using navigation.
作者信息
Nogler Michael, Mayr Eckart, Krismer Martin, Thaler Martin
机构信息
Department of Orthopedics, Medical University of Innsbruck, Innsbruck, Austria.
出版信息
Acta Orthop. 2008 Dec;79(6):789-93. doi: 10.1080/17453670810016867.
BACKGROUND AND PURPOSE
Correct positioning of the acetabular component is important in total hip arthroplasty (THA). We evaluated the effect of an imageless navigation system on the accuracy of cup positioning using a minimally invasive direct anterior approach.
METHODS
Hip replacements were performed in 44 cadaveric hips (22 cadavers) that were divided randomly into 2 groups. In the study group, THA was performed using an imageless navigation system. In the control group, no navigation system was used. CT scans were taken postoperatively. Using 3D reconstructions, the cup position was determined in relation to the frontal pelvic plane. The goal was to place each cup at 45 degrees of inclination and 20 degrees of anteversion, as recommended by the manufacturer.
RESULTS
In the navigated group, there was a statistically significantly smaller range of deviation from the target angles of inclination and anteversion relative to the control group.
INTERPRETATION
We conclude that imageless navigation improves the accuracy of cup placement in minimally invasive THA using the direct anterior approach.
背景与目的
在全髋关节置换术（THA）中，髋臼组件的正确定位至关重要。我们评估了无图像导航系统对采用微创直接前路入路时髋臼杯定位准确性的影响。
方法
对44具尸体髋关节（22具尸体）进行髋关节置换，随机分为2组。研究组采用无图像导航系统进行THA。对照组未使用导航系统。术后进行CT扫描。通过三维重建确定髋臼杯相对于骨盆额状面的位置。目标是按照制造商的建议将每个髋臼杯置于45度倾斜和20度前倾角。
结果
与对照组相比，导航组在倾斜角和前倾角与目标角度的偏差范围在统计学上显著更小。
结论
我们得出结论，无图像导航提高了采用直接前路入路的微创THA中髋臼杯放置的准确性。
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