Department of Orthopaedic Surgery, Hachiya Orthopaedic Hospital, Nagoya, Aichi, Japan; Department of Orthopaedic Surgery, Toyama Rosai Hospital, Uozu, Toyama, Japan.
J Arthroplasty. 2013 Dec;28(10):1757-9. doi: 10.1016/j.arth.2013.06.016. Epub 2013 Aug 6.
Previously, we reported using CT images that the anterior surface of the femur immediately proximal to the trochlea and its tangent line (femoral anterior tangent line; FAT line) could be used as a good index of the femoral rotation. In this study, we developed a jig that allowed us to measure the FAT line during surgery, and we examine the relation between preoperative and intraoperative measurement values. The results indicated that the average intraoperative measurement value of the 'surgical' FAT line was 9.8° ± 3.2° internally rotated using surgical transepicondylar axis reference. This value significantly correlated to preoperative FAT line/clinical transepicondylar axis angle. These findings demonstrated that FAT line is a useful index for appropriate rotational alignment of femoral component, both before and during TKA.
此前，我们曾报道过使用 CT 图像，股骨滑车近端的前表面及其切线（股骨前切线；FAT 线）可作为股骨旋转的良好指标。在这项研究中，我们开发了一种夹具，可在手术中测量 FAT 线，并研究术前和术中测量值之间的关系。结果表明，使用手术髁间轴参考，“手术”FAT 线的平均术中测量值为 9.8°±3.2°内旋。该值与术前 FAT 线/临床髁间轴角度显著相关。这些发现表明，FAT 线是 TKA 前后股骨组件适当旋转对线的有用指标。
