{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,22]],"date-time":"2026-07-22T15:02:29Z","timestamp":1784732549021,"version":"3.55.0"},"reference-count":12,"publisher":"BMJ","issue":"7","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2026,7,2]]},"published-print":{"date-parts":[[2026,7]]},"abstract":"<jats:p>Postoperative instability following total knee arthroplasty (TKA) is a serious complication that challenges both the surgeon and the patient. Management becomes particularly complex when instability is recurrent, as restoration of mechanical alignment and soft-tissue balance is critical for a successful outcome. We report a case of a man in his sixties who presented with knee dislocation after a primary TKA performed elsewhere. The patient subsequently underwent tibial insert exchange, following which he again experienced recurrent dislocation. Definitive management was achieved with revision TKA using a rotating hinge knee prosthesis. This case underscores the importance of appropriate implant selection and the role of constrained designs in managing complex and recurrent instability following TKA.<\/jats:p>","DOI":"10.1136\/bcr-2025-271737","type":"journal-article","created":{"date-parts":[[2026,7,22]],"date-time":"2026-07-22T14:20:24Z","timestamp":1784730024000},"page":"e271737","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Recurrent dislocation following total knee arthroplasty managed with a hinged revision prosthesis"],"prefix":"10.1136","volume":"19","author":[{"given":"Bismaya","family":"Sahoo","sequence":"first","affiliation":[{"name":"Orthopaedics, All India Institute of Medical Sciences Kalyani, Kalyani, West Bengal, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0002-3339-2744","authenticated-orcid":false,"given":"Mainak","family":"Roy","sequence":"additional","affiliation":[{"name":"Orthopaedics, All India Institute of Medical Sciences Kalyani, Kalyani, West Bengal, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Amit","family":"Kumar","sequence":"additional","affiliation":[{"name":"Orthopaedics, All India Institute of Medical Sciences Kalyani, Kalyani, West Bengal, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jitendra","family":"Kumar","sequence":"additional","affiliation":[{"name":"Orthopaedics, All India Institute of Medical Sciences Kalyani, Kalyani, West Bengal, India"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2026,7,22]]},"reference":[{"key":"2026072207201865000_19.7.e271737.1","doi-asserted-by":"crossref","unstructured":"Sharkey PF , Hozack WJ , Rothman RH , et al . Insall Award paper. Why are total knee arthroplasties failing today? 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Evolution of the rotating hinge for complex total knee arthroplasty. 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