University of New Mexico Health Sciences Center, Department of Orthopaedic Surgery, Albuquerque, New Mexico, USA.
J Arthroplasty. 2010 Dec;25(8):1235-9. doi: 10.1016/j.arth.2009.10.004. Epub 2009 Dec 21.
We reviewed 75 primary total hip arthroplasty preoperative and postoperative radiographs and recorded limb length discrepancy, change in femoral offset, acetabular position, neck cut, and femoral component positioning. Interobturator line, as a technique to measure preoperative limb length discrepancy, had the least amount of variance when compared with interteardrop and intertuberosity lines (Levene test, P = .0527). The most common error in execution of preoperative templating was excessive limb lengthening (mean, 3.52 mm), primarily due to inferior acetabular cup positioning (Pearson correlation coefficient, P = .036). Incomplete medialization of the acetabular component contributed the most to offset discrepancy. The most common errors in the execution of preoperative templating resulted in excessive limb lengthening and increased offset. Identifying these errors can lead to more accurate templating techniques and improved intraoperative execution.
我们回顾了 75 例初次全髋关节置换术术前和术后的 X 线片，并记录了肢体长度差异、股骨偏心距变化、髋臼位置、颈切和股骨组件位置。与 interteardrop 和 intertuberosity 线相比，闭孔内肌线（interobturator line）作为一种测量术前肢体长度差异的技术，其变异最小（Levene 检验，P =.0527）。术前模板制作中最常见的错误是过度延长肢体（平均 3.52mm），主要是由于髋臼杯位置过低（Pearson 相关系数，P =.036）。髋臼组件不完全内移是导致偏心距差异的最主要原因。术前模板制作中最常见的错误导致肢体过度延长和偏心距增加。识别这些错误可以导致更准确的模板技术和改进术中执行。
