人工全髋关节置换术后双下肢长度的变化

目的:观察人工全髋关节置换术后双下肢长度的变化。方法:2009年1月至2011年6月接受单侧和双侧人工全髋关节置换术的患者117例(152髋),术前下肢等长35例,不等长82例。所有病例均使用生物型假体关节行全髋关节置换。测量术后1周内的下肢长度,计算术后双下肢长度之差,视双下肢长度之差≤10mm者为等长。结果:117例患者中,术后下肢等长116例(99.2%),双下肢长度相差11mm者1例(0.9%);116例中术后双下肢完全等长108例(92.3%),相差<6mm者5例,相差6～10mm者3例。结论:充分掌握各种术中测量下肢长度的方法,综合运用于平衡下肢长度,术中多次比对可降低术后下肢不等长的发生率。

Clinical changes of leg length after total hip arthroplasty

Aim:To investigate the changes of leg length after total hip arthroplasty.Methods:A total of 117 patients(152 hip joints) from January 2009 to June 2011 were followed up routinely.Before the operation there were 35 cases whose lower limbs were defined as the equal length,and 82 cases,unequal length.The artificial joints of all the cases were cementless prosthesis.The leg length after the operation(within a week) were measured.Results:In all the 117 cases,there were 116 cases whose lower limbs were equal long,and 1 case whose leg length discrepancy(LLD) was 11 mm;among the 116 cases,108 cases(92.3%) whose LLD was 0 mm,5 cases whose LLD was less than 6 mm,and 3 cases whose LLD was between 6～10 mm.Conclusion:The various intraoperative methods of measuring leg length can significantly reduce the incidence of postoperative LLD.