强直性脊柱炎致强直髋患者骨盆倾斜角与股骨颈前倾角相关性分析

Correlation between Pelvic Tilt and Femoral Neck Anteversion of the Bony Ankylosis of Hip Joint in Patients with Ankylosing Spondylitis

目的探讨强直性脊柱炎致髋关节僵直患者骨盆前倾角与股骨颈前倾角之间的相关性,及对于术中假体定位的指导作用。方法 2011年6月～2012年10月入西京医院骨关节外科接受人工全髋关节置换术的21例强直性脊柱炎髋关节僵直患者分别行骨盆CT平扫加三维重建、股骨远端CT平扫,分别测量骨盆倾斜角度及股骨颈前倾角。结果强直性脊柱炎髋关节僵直患者其骨盆倾斜角度与股骨颈前倾角之间存在线性相关。结论强直性脊柱炎髋关节僵直患者骨盆前倾角与股骨颈前倾角之间存在相关性。根据两者线性关系,对于患者行人工全髋关节置换术术中前倾角的定位及术后髋关节功能改善、减少假体脱位发生概率有一定的帮助。

Objective To discuss the relativity between pelvic： tilt （PT） and femoral neck antcversion（FNA） of the bony ankylosis in patients with ankylosing spondylitis in order to definite tbe location of prosthesis during operation. Methods From July 2011 to October 2012,21patients were recruited in this study, with the examination of pelvic CT and three- dimensional reeonstruction, distal femur CT scan to meter the pelvic tilt and the femoral neck anteversion. Results There was obvious relationship between pelvic tilt and the femoral neck anteversion in patients with ankylosing spondylitis. Conclusion There is correlation between pelvic tilt and femoral neck anteversion of the bony ankylosis in patients with ankylosing spondylitis. It may be helpful for them in the fixed position of the total hip arthoplasty and to reduee the dislocation.