Department of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto, Japan.
J Arthroplasty. 2011 Oct;26(7):1088-94. doi: 10.1016/j.arth.2011.05.011. Epub 2011 Jun 14.
We evaluated the preoperative errors in the pelvic tilt of 249 hips before total hip arthroplasty using fluoroscopic imaging while the patients were in the lateral decubitus position. The mean absolute value errors of the pelvic tilt were 2.94° (SD, 2.92°), 2.49° (SD, 2.68°), and 5.92° (SD, 5.20°) in the coronal, transverse, and sagittal planes, respectively. Such preoperative errors in the pelvic tilt contribute to malpositioning of the acetabular component, as is frequently observed on postoperative radiographs. We reduced the incidence of malpositioning by correcting the errors in the pelvic tilt through repositioning of the operating table using fluoroscopic imaging before surgery. The new technique using fluoroscopic imaging described in this article can be performed within a short time without a navigation system.
我们评估了 249 例髋关节置换术前侧卧位下骨盆倾斜的术前影像学误差，采用荧光透视成像。骨盆倾斜的平均绝对误差分别为冠状面 2.94°（标准差 2.92°）、横断面 2.49°（标准差 2.68°）和矢状面 5.92°（标准差 5.20°）。这种骨盆倾斜的术前误差导致髋臼组件位置不良，这在术后 X 线片上经常观察到。我们通过在术前使用荧光透视成像重新定位手术台来纠正骨盆倾斜的误差，从而降低了位置不良的发生率。本文描述的新的荧光透视成像技术无需导航系统即可在短时间内完成。
