An Additional Reference Axis Improves Femoral Rotation Alignment in Image-Free Computer Navigation Assisted Total Knee Arthroplasty
An Additional Reference Axis Improves Femoral Rotation Alignment in Image-Free Computer Navigation Assisted Total Knee Arthroplasty
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DOI：
10.1016/j.arth.2013.01.030
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发表时间：
2013-05-01
影响因子：
3.5
通讯作者：
Nakagawa, Takumi
中科院分区：
文献类型：
--
作者：
Inui, Hiroshi;Taketomi, Shuji;Nakagawa, Takumi
很少有研究证明使用无图像导航系统的旋转对准精度提高，主要是由于解剖标志配准不一致。我们在全膝关节置换术中使用了无图像导航，该导航采用两个参考轴（经髁轴和垂直于Whiteside轴的轴）之间的平均算法进行股骨部件旋转控制。我们假设增加另一个轴（术前X线片上测量的髁突扭转轴）将提高准确性。将使用平均算法的一组（双轴组）与使用另一轴的另一组进行比较，以确认平均算法的准确性（三轴组）。三轴组股骨假体植入旋转对线更准确（理想：三轴组100%，双轴组82%，P
Few studies have demonstrated improvement in accuracy of rotational alignment using image-free navigation systems mainly due to the inconsistent registration of anatomical landmarks. We have used an image-free navigation for total knee arthroplasty, which adopts the average algorithm between two reference axes (transepicondylar axis and axis perpendicular to the Whiteside axis) for femoral component rotation control. We hypothesized that addition of another axis (condylar twisting axis measured on a preoperative radiograph) would improve the accuracy. One group using the average algorithm (double-axis group) was compared with the other group using another axis to confirm the accuracy of the average algorithm (triple-axis group). Femoral components were more accurately implanted for rotational alignment in the triple-axis group (ideal: triple-axis group 100%, double-axis group 82%, P