髋关节骨性关节炎及髋臼发育不良对髋关节表面置换术中髋臼安装角度的影响

目的]研究全髋关节表面置换术中,单纯骨性关节炎及髋关节发育不良对髋臼安装角度的影响及两组病例疗效比较。方法]自2006～2009年,本科共实施全髋表面关节置换术20例23髋,病因包括单纯骨性关节炎10髋及髋关节发育不良13髋。手术假体均采用金属对金属大直径表面置换假体,股骨侧骨水泥固定,髋臼侧生物型固定。结果]所有患者均获得近期随访(6个月～3年),随访包括临床评估和放射学评估。两组患者术前术后Harris评分均无明显统计学差异。无一发生术后脱位、股骨颈骨折等并发症。其中单纯骨性关节炎患者术后臼杯外展角25.6°～56.0°(平均43.9°±9.9°),平均髋臼覆盖率达95.8%。髋臼发育不良患者术后臼杯外展角22.4°～69.3°(平均46.8°±12.9°),髋臼覆盖率达84.3%。结论]金属对金属大直径表面置换假体在治疗单纯骨性关节炎及髋关节发育不良早期临床疗效并无明显统计学差异。但是髋关节发育不良患者行髋关节表面置换术中,髋臼假体外展角离散度要明显高于单纯骨性关节炎组,其髋臼杯假体外展角度控制要难于单纯骨性关节炎。

Analysis of the installation of acetabulum of total hip resurfacing arthroplasty in surgery of developmental dysplasia of hip

Objective]To observe the early clinical result and the location and angle of acetabulum of the total hip resurfacing arthroplasty(THRA) in surgery of osteoarthritis of hip and developmental dysplasia of hip(DDH). Method]A retrospective study was carried out in twenty patients(twenty-three hips) dealt with THRA from 2006 to 2009,including ten cases of osteoarthritis and thirteen cases of DDH.All patients were implanted with metal-on-metal prostheses of large diameter.Femoral head was fixed with cement and ...