全髋置换术后内衬分离:1例报告和综述

Acetabular liner dissociation following total hip arthroplasty: A case report with literature review

摘要:

髋关节置换术已经成为关节外科的一种常见的手术方式，用于治疗累及髋关节的骨折、中重度骨关节炎、骨肿瘤和先天性关节发育不良等疾病。随着髋关节置换技术的不断成熟和假体材料的改进，人工关节的稳定性极大改善，假体磨损日渐减少，但由于假体组件间的相对运动和材料的电解、退变，以及假体安装位置不当等原因，假体磨损和松动等术后并发症不可避免。内衬分离是一种极为罕见的术后并发症，目前关于内衬分离的发生机制、诊断和治疗研究更为罕见，其诊断主要依靠 X 线片表现。本文报道了 1 例内衬分离且不易明确诊断的患者，并对相关文献进行综述。

Abstract:

Hip arthroplasty has become a common surgical procedure in joint surgery for the treatment of fractures involving the hip, moderate to severe osteoarthritis, bone tumors, congenital dysplasia and so on. With the continuous maturation of hip replacement tech- nique and improvement of prosthetic materials, the stability of the artificial joint has improved greatly, whereas wear of the prosthesis is de- creasing. However, postoperative complications such as wear and loosening of the prosthesis are inevitable due to the relative movement be- tween prosthetic components and electrolysis and degeneration of the materials, as well as the improper placement of the prosthesis. Liner separation is an extremely rare postoperative complication, and research on the mechanism of occurrence, diagnosis and treatment of liner separation is even rarer, with its diagnosis mainly focused on X-ray. This article reports a case of a patient with a separated liner that is not easily diagnosed definitively, with a review of relevant literature about this catastrophic complication.