Impingement in total hip arthroplasty - A study of retrieved acetabular components
Impingement in total hip arthroplasty - A study of retrieved acetabular components
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DOI：
10.1016/j.arth.2004.09.058
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发表时间：
2005-06-01
影响因子：
3.5
通讯作者：
Salvati, EA
中科院分区：
文献类型：
--
作者：
Shon, WY;Baldini, T;Salvati, EA
撞击可能损坏髋臼内衬，造成聚乙烯磨损，并导致脱位。我们从1990年至1999年检索的较大组中随机选择162个部件，确定撞击的患病率、与脱位的关系以及患者、手术和设计因素的影响。测量撞击弧、严重度和磨损损伤;从病历中获得患者数据，并根据X线片确定部件位置。超过一半（56%）显示撞击，包括94%因脱位而取出的患者。如果翻修诊断为脱位，如果假体外径较大或边缘抬高，如果股骨假体有延长的凸缘颈，则撞击的发生率显著增加。种植体设计，特别是头/颈比，可以帮助减少撞击的发生率。(c)2005年爱思唯尔公司All rights reserved.
Impingement can damage the acetabular liner, create polyethylene wear, and cause dislocation. We determined the prevalence of impingement, its relation with dislocation, and the influence of patient, surgical, and design factors in 162 components randomly selected from a larger group retrieved between 1990 and 1999. Impingement arc, severity, and wear damage were measured; patient data were obtained from medical records, and component position was determined from radiographs. More than half (56%) showed impingement, including 94% of those removed for dislocation. The occurrence of impingement was significantly increased if the revision diagnosis was dislocation, if the component had a large outer diameter or an elevated rim, and if the femoral component had an extended flanged neck. Implant design, in particular head/neck ratio, can help reduce the prevalence of impingement. (c) 2005 Elsevier Inc. All rights reserved.