Quantification of Pelvic Tilt in Total Hip Arthroplasty
Quantification of Pelvic Tilt in Total Hip Arthroplasty
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DOI：
10.1007/s11999-009-1064-7
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发表时间：
2010-02-01
影响因子：
4.2
通讯作者：
Dorr, Lawrence D.
中科院分区：
文献类型：
--
作者：
Zhu, Jinjun;Wan, Zhinian;Dorr, Lawrence D.
在全髋关节置换术中，骨盆的前倾或后倾改变了髋臼部件在身体冠状面上的位置，而不是其在骨盆骨中的解剖位置。为了了解侧卧位手术台上骨盆倾斜患者的发生率和临床重要性，我们研究了436例（477髋）接受初次THA的患者，使用无图像计算机导航系统测量倾斜。我们确定了骨盆倾斜的分布和大小，特别是10度或更大的倾斜。倾斜的分布范围为后25 °至前20 °。477个髋关节中有29个（6.1%）倾斜度为零; 251个（52.6%）倾斜度为1度至5度; 120个（25.2%）倾斜度为6度至9度; 77个（16.1%）倾斜度为10度或更大。髋臼前倾角的转换因子已由Lembeck等人通过数学公式确定，并由我们在实践中证实。在THA过程中测量骨盆倾斜度将提高髋臼杯位置的准确性，特别是允许在冠状面上测量前倾。
In THA, anterior or posterior tilt of the pelvis changes the position of the acetabular component on the coronal plane of the body as compared with its anatomic position in the pelvic bone. To understand the occurrence and clinical importance for patients with pelvic tilt on an operating room table in the lateral decubitus position, we studied 436 patients (477 hips) undergoing primary THA using an imageless computer navigation system that measured tilt. We determined the distribution and magnitude of pelvic tilt, especially tilt of 10 degrees or greater. The distribution of tilt had a range of 25 degrees posterior to 20 degrees anterior. Twenty-nine of 477 (6.1%) hips had zero tilt; 251 (52.6%) had tilt of 1 degrees to 5 degrees; 120 (25.2%) had tilt of 6 degrees to 9 degrees; and 77 (16.1%) had tilt of 10 degrees or greater. The conversion factor for acetabular anteversion has been determined by a mathematical formula by Lembeck et al. and was confirmed by us in practice. Measurement of pelvic tilt during the performance of THA will improve the accuracy of cup position, especially allowing anteversion to be measured on the coronal plane.