Conroy Jonathan L, Whitehouse Sarah L, Graves Stephen E, Pratt Nicole L, Ryan Philip, Crawford Ross W
Orthopaedic Research Unit, The Prince Charles Hospital, Brisbane, Queensland, Australia.
J Arthroplasty. 2008 Sep;23(6):867-72. doi: 10.1016/j.arth.2007.07.009. Epub 2008 Mar 7.
Risk factors were investigated for revision for dislocation in primary total hip arthroplasties (THAs) between September 1, 1999, and December 31, 2004, as reported by the Australian Orthopaedic Association National Joint Replacement Registry. For 65992 primary THAs, the only initial diagnoses with significantly increased relative risk (RR) of revision for dislocation compared to osteoarthritis were fractured neck of femur (RR, 2.03; P < .001), rheumatoid arthritis (RR, 2.01; P < .01), and avascular necrosis (RR, 1.57; P < .05). A total of 58109 primary THAs for osteoarthritis were investigated for effect of age group, sex, and fixation method. There were 428 (0.7%) revisions for dislocation, 369 (0.8%) with a cementless acetabulum, and 59 (0.6%) with cemented acetabulum (RR, 1.59; P < .01). There is a significantly increasing risk of revision for dislocation as head size decreases (P < .001). Cementless acetabula, particularly with smaller heads, have a higher rate of revision for dislocation.
澳大利亚骨科协会国家关节置换登记处报告了1999年9月1日至2004年12月31日期间初次全髋关节置换术（THA）脱位翻修的危险因素。对于65992例初次THA，与骨关节炎相比，脱位翻修相对风险（RR）显著增加的唯一初始诊断为股骨颈骨折（RR，2.03；P <.001）、类风湿性关节炎（RR，2.01；P <.01）和缺血性坏死（RR，1.57；P <.05）。对58109例骨关节炎初次THA进行了年龄组、性别和固定方法影响的调查。共有428例（0.7%）脱位翻修，其中369例（0.8%）髋臼无骨水泥，59例（0.6%）髋臼有骨水泥（RR，1.59；P <.01）。随着股骨头尺寸减小，脱位翻修风险显著增加（P <.001）。无骨水泥髋臼，尤其是股骨头较小的情况下，脱位翻修率较高。
