髋关节置换术后脊柱骨盆指数的变化及其对髋臼假体位置的影响。
Changes in spinopelvic indices after hip arthroplasty and its influence on acetabular component orientation.
作者信息
Shah Siddharth Mahesh, Munir Selin, Walter William Lindsay
机构信息
Specialist Orthopaedic Group, Mater Misericordiae Hospital, 25 Rocklands Road, North Sydney, NSW 2060, Australia.
出版信息
J Orthop. 2017 Aug 1;14(4):434-437. doi: 10.1016/j.jor.2017.07.018. eCollection 2017 Dec.
OBJECTIVE
To evaluate spinopelvic changes after hip arthroplasty in standing and ready-to-rise positions.
METHODS
We compared pelvic tilt, sacral slope, cobb's angle, and hip flexion on pre and postoperative spinopelvic radiographs.
RESULTS
Standing: All postoperative indices were similar to preoperative ones except sacral slope (mean difference:1.6°, p = 0.046). Ready-to-rise: All postoperative indices were similar to preoperative ones except pelvic tilt which was significantly greater postoperatively (mean difference: 5.1°, p = 0.017). Fifteen patients showed >10° increase in pelvic tilt postoperatively.
CONCLUSION
Changes in pelvic tilt in ready-to-rise position can predispose to posterior edge loading, edge wear, and dislocation; especially with inadequate cup anteversion.
目的
评估髋关节置换术后站立位和准备起身位时脊柱骨盆的变化。
方法
我们比较了术前和术后脊柱骨盆X线片上的骨盆倾斜度、骶骨倾斜度、 Cobb角和髋关节屈曲度。
结果
站立位：除骶骨倾斜度外（平均差异：1.6°，p = 0.046），所有术后指标均与术前相似。准备起身位：除骨盆倾斜度术后显著增大外（平均差异：5.1°，p = 0.017），所有术后指标均与术前相似。15例患者术后骨盆倾斜度增加>10°。
结论
准备起身位时骨盆倾斜度的变化可能易导致后缘负荷、边缘磨损和脱位；尤其是髋臼前倾角不足时。
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