Fatigue failure of constrained total knee replacement: A case report

Q2 Medicine

Journal of Clinical Orthopaedics and Trauma Pub Date : 2025-04-05 DOI:10.1016/j.jcot.2025.102953

Whisper Grayson, Nicholas M. Brown

引用次数: 0

Abstract

Hinged implants for total knee arthroplasty (TKA) improve stability and joint function in a ligamentously compromised knee, but potentially at the cost of reduced implant longevity due to increased mechanical stress on the construct. This report details the case of an 83-year-old woman who underwent a revision total knee arthroplasty for a chronically dislocated hinged knee prosthesis in August 2024 at our institution. The patient presented with a several month history of pain and instability with reported self-reduction of the prosthesis to aid in ambulation. The revision surgery revealed that the axle had fractured into three pieces. This finding represents a unique case of hinged TKA failure. The primary purpose of this case report is to describe the patient presentation and revision technique to contribute to the literature available on causes of hinged TKA mechanical failure.

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约束全膝关节置换术疲劳失效1例

全膝关节置换术（TKA）中的铰链式假体可以改善韧带受损膝关节的稳定性和关节功能，但由于结构上的机械应力增加，潜在地以降低假体寿命为代价。本报告详细介绍了一名83岁的女性，她于2024年8月在我们机构接受了慢性脱位的铰链式膝关节假体的翻修全膝关节置换术。患者表现出几个月的疼痛和不稳定病史，并报告自行复位假体以帮助行走。翻修手术显示车轴断裂成三段。这一发现代表了铰链式TKA失败的一个独特案例。本病例报告的主要目的是描述患者的表现和翻修技术，以促进有关铰链式TKA机械故障原因的文献。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Clinical Orthopaedics and Trauma Medicine-Orthopedics and Sports Medicine

CiteScore

4.30

自引率

0.00%

发文量

181

审稿时长

92 days

期刊介绍： Journal of Clinical Orthopaedics and Trauma (JCOT) aims to provide its readers with the latest clinical and basic research, and informed opinions that shape today''s orthopedic practice, thereby providing an opportunity to practice evidence-based medicine. With contributions from leading clinicians and researchers around the world, we aim to be the premier journal providing an international perspective advancing knowledge of the musculoskeletal system. JCOT publishes content of value to both general orthopedic practitioners and specialists on all aspects of musculoskeletal research, diagnoses, and treatment. We accept following types of articles: • Original articles focusing on current clinical issues. • Review articles with learning value for professionals as well as students. • Research articles providing the latest in basic biological or engineering research on musculoskeletal diseases. • Regular columns by experts discussing issues affecting the field of orthopedics. • "Symposia" devoted to a single topic offering the general reader an overview of a field, but providing the specialist current in-depth information. • Video of any orthopedic surgery which is innovative and adds to present concepts. • Articles emphasizing or demonstrating a new clinical sign in the art of patient examination is also considered for publication. Contributions from anywhere in the world are welcome and considered on their merits.