Williams J F, Gottesman M J, Mallory T H
Clin Orthop Relat Res. 1982 Nov-Dec(171):53-8.
A study was undertaken of 32 dislocations occurring during a nine-year period in 25 of 1280 postoperative total hip arthroplasty patients. Dislocations occurred in 0.6% of 1030 primary procedures, 1.6% of 165 conversions of hemiarthroplasties to total arthroplasties, and 20% of 85 revisions of previous total hip arthroplasties. Average time to dislocation was 31 days after primary procedures and 106 days after revisions. Acetabular cup malposition and poor patient cooperation appeared to be the causes of dislocation after primary procedures. Trochanteric absence or compromise was a factor in dislocation after revision. Treatment consisted of 13 closed reduction and 19 open reductions. An above-knee hip spica cast was employed for six weeks following closed or open reduction in 16 patients. These 16 patients have been followed up for an average of 32 months (28-45 months). Only one redislocation has occurred.
对1280例全髋关节置换术后患者中的25例在9年期间发生的32次脱位进行了研究。在1030例初次手术中，脱位发生率为0.6%；在165例半髋关节置换转为全髋关节置换手术中，脱位发生率为1.6%；在85例既往全髋关节置换翻修手术中，脱位发生率为20%。初次手术后脱位的平均时间为31天，翻修术后为106天。髋臼杯位置不良和患者配合不佳似乎是初次手术后脱位的原因。转子缺失或受损是翻修术后脱位的一个因素。治疗包括13次闭合复位和19次切开复位。16例患者在闭合或切开复位后采用了六周的髋人字石膏固定。这16例患者平均随访了32个月（28 - 45个月）。仅发生了1次再脱位。
