Chronic Wear-Induced Bearing Dislocation in a Fixed-Bearing Unicompartmental Knee Arthroplasty: A Case Report. Issue 3 (July 2021)

• Record Type: Journal Article
• Authors: Kiran, Manish; Kho, James; Hepburn, Elizabeth; Chakraverty, Julian; Davies, Hywel
• Is Part Of: JBJS case connector. Volume 11:Issue 3(2021)
• Publication Date: 2021-07
• Subjects: metallosis -- bearing dislocation -- unicompartmental knee arthroplasty; Orthopedic surgery -- Case studies -- Periodicals; Orthopedic surgery -- Periodicals; Orthopedics; Orthopedic Procedures; Orthopedic surgery; Periodicals; Electronic journals; Case studies; Periodicals; 616.7
• DOI: 10.2106/JBJS.CC.21.00364
• Languages: English
• ISSNs: 2160-3251

Abstract

Abstract : Case: We present a case of late onset, bearing wear-induced failure of locking mechanism, resulting in bearing dislocation and rapidly progressive severe metallosis in a medial fixed-bearing (FB) unicompartmental knee arthroplasty (UKA). Conclusion: Bearing dislocation is a rare complication of chronic wear in FB UKA, and early recognition is essential to prevent metallic component articulation-induced metallosis and catastrophic failure.