Long William J, Nayyar Samir, Chen Kevin K, Novikov David, Davidovitch Roy I, Vigdorchik Jonathan M
Department of Orthopaedic Surgery, NYU Langone Orthopedic Hospital, New York, NY, USA.
Arthroplast Today. 2018 Jan 2;4(2):169-174. doi: 10.1016/j.artd.2017.11.009. eCollection 2018 Jun.
Ultraporous acetabular components were developed to improve osseointegration and fit for increased longevity and better outcomes after total hip arthroplasty. There is a paucity of literature detailing this acetabular component's clinical performance, with even less detailing those with screw fixation. We identify 5 patients at our institution who underwent revision total hip arthroplasty for early aseptic acetabular cup loosening of an ultraporous acetabular component known as the Tritanium primary cup with secondary screw fixation. They all presented with groin and hip pain after index surgery and underwent follow-up radiographic examination consistent with component loosening requiring revision surgery. This case series reports on the risk of early acetabular cup loosening and its associated clinical presentation, workup, and surgical management in patients with the Tritanium primary cup augmented with screws.
超多孔髋臼组件的研发旨在改善骨整合，并使其更贴合，以提高全髋关节置换术后的使用寿命并获得更好的效果。关于这种髋臼组件临床性能的文献较少，详细描述带螺钉固定的髋臼组件的文献更是少之又少。我们确定了本院5例患者，他们因一种名为Tritanium初次髋臼杯并采用二次螺钉固定的超多孔髋臼组件早期无菌性髋臼杯松动而接受了翻修全髋关节置换术。他们在初次手术后均出现腹股沟和髋关节疼痛，并接受了随访影像学检查，结果显示组件松动，需要进行翻修手术。本病例系列报告了使用螺钉增强的Tritanium初次髋臼杯患者早期髋臼杯松动的风险及其相关临床表现、检查和手术处理情况。
