闭孔内肌宽度变化诊断髋关节疾病的价值探讨

Diagnostic value of the change in obturator internus width for hip disease

目的探讨闭孔内肌宽度变化对髋关节疾病的诊断价值。方法对2009年1月～2011年12月本院收治210例髋关节疾病患者的CT图像资料进行回顾性分析,并选择同期205例髋关节正常者的CT图像作为对照,观察两组间闭孔内肌最大宽度的差异。结果正常组的左、右闭孔内肌最大宽度基本相同,观察组的闭孔内肌宽度变化与疾病有关,如髋关节发生坏死,则病变一侧的闭孔内肌发生萎缩,最大宽度比正常侧小,如髋关节发生积液,则病变侧的闭孔内肌发生肿胀,最大宽度比正常侧增宽。结论测量闭孔内肌最大宽度,有助于诊断和发现髋关节积液、股骨头坏死等髋关节疾病,并且此方法简单直观,可作为髋关节疾病的间接征象。

Objective To explore the diagnostic value of the change in obturator internus width for the hip disease. Methods The CT images of 210 patients with hip disease （observation group） treated in our hospital during Jan. 2009 to Dec. 2011 were retrospectively analyzed and compared with those of 205 selected people with normal hip joint （normal group） at the same period, and the differences in the maximum widths of obturator internus between the two groups were observed. Results The maximum wi＆hs of the right and left obturator internus in normal group were basically same, while the change of obtu- rator internus width in observation group was related with the disease. In the patients with the hip necrosis, atrophy occurred at the affected side of obturator internus, and the maximum width was smaller than that at the normal side. In the patients with the hip effusion, swelling occurred at the affected side of obturator internus, and the maximum width was larger than that at the normal side. Conclusion The measurement of maximum width of obturator internus is helpful to the diagnosis and discovery of the hip diseases such as hip effusion and femoral head necrosis. Besides, this method is simple and intuitive, which can be used as the indirect indicator of hip disease.