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Updated: Sep 7, 2025

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Management of Extensor Mechanism Disruption After Total Knee Arthroplasty
Michael R Bisogno1, Giles R Scuderi1
1Orthopaedic Institute at Northwell Health, 210 East 64th Street, 4th Floor, New York, NY 10065, USA.
Abstract:
Extensor mechanism disruptions following total knee arthroplasty are devastating injuries with complication rates following surgical intervention ranging from 25% to 45%. Primary repair with and without augmentation is appropriate in certain limited clinical settings. Allograft reconstruction has been a popular option; however, synthetic grafts are showing promise and good results. In this article the authors discuss an algorithm for treating these difficult injuries as well as detail the surgical techniques for each approach.
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