钽金属骨小梁臼杯联合钽金属加强块重建PaproskyⅢ型髋臼骨缺损的近期疗效

被引:8
作者
郭盛杰
黄勇
唐浩
顾建明
杨德金
周一新
机构
[1] 北京积水潭医院矫形骨科
关键词
关节成形术, 置换, 髋; 再手术; 髋臼; 髋假体; 钽;
D O I
暂无
中图分类号
R687.4 [关节手术];
学科分类号
100220 [骨科学];
摘要
目的探讨钽金属骨小梁臼杯联合钽金属加强块重建严重髋臼骨缺损的近期疗效。方法 2014年4月至2015年12月应用钽金属骨小梁臼杯联合钽金属加强块重建PaproskyⅢ型髋臼缺损23例24髋, 男11例12髋, 女12例12髋;年龄38~65岁, 平均54岁。20例为全髋关节翻修术, 4例为初次全髋关节置换术。术中尽量重建髋臼环形支撑, 不能重建时依据"三点固定"原理使臼杯在三角形分布的三个支点上获得稳定, 通过钽金属骨小梁臼杯和钽金属加强块的不同组合, 重建髋臼"环"或支撑"点", 辅助臼杯获得初始稳定性并重建髋关节旋转中心。术后随访时评估Harris髋关节评分、西安大略和麦克马斯特大学(Western Ontario and McMaster Universities, WOMAC)骨关节炎指数, 统计术中血管、神经损伤和术后假体周围感染、脱位、假体周围骨折等严重并发症的发生情况, 通过X线片测量髋关节旋转中心高度和水平位置。结果随访7~28个月, 平均16个月。Harris髋关节评分由术前(35.3±12.1)分提高至末次随访的(82.7±8.3)分(t=-16.991, P<0.001)。WOMAC骨关节炎指数由术前(39.1±24.0)分提高至末次随访的(87.2±11.4)分(t=-7.671, P<0.001)。患侧旋转中心高度由术前(44.02±11.65)mm降至术后(22.96±8.24)mm (t=6.458 , P<0.001)。随访期间钽金属骨小梁臼杯及钽金属加强块均稳定, 无移位及松动, 无假体相关感染及脱位, 无神经损伤和假体周围骨折等并发症。结论钽金属骨小梁臼杯联合钽金属加强块重建PaproskyⅢ型髋臼骨缺损能够获得良好的初始稳定性, 重建髋关节生物力学, 术后近期疗效良好。
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