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Reevaluating isolated polyethylene revision for instability after total knee arthroplasty

Instability is a common mode of failure after primary total knee arthroplasty (TKA). Surgical management includes total revision and isolated polyethylene exchange. This study aimed to evaluate outcomes after isolated polyethylene exchange for instability in one of the largest cohorts reported to da...

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Published in:The knee 2023-06, Vol.42, p.186-192
Main Authors: Patel, Arpan, Egbulefu, Fortune, Berger, Richard A., Gerlinger, Tad L.
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Gerlinger, Tad L.
description Instability is a common mode of failure after primary total knee arthroplasty (TKA). Surgical management includes total revision and isolated polyethylene exchange. This study aimed to evaluate outcomes after isolated polyethylene exchange for instability in one of the largest cohorts reported to date. This is a retrospective study of 87 patients and 93 cases of isolated polyethylene exchange after TKA for instability at a tertiary academic center. Preoperative and postoperative Knee Society Scores were compared using paired T-testing with a significance level set at p = .05. Secondary outcomes included satisfaction, complications, rates of additional surgery, and recurrent instability. Of the 87 patients, 61 patients had both pre and post-operative KSS-Knee scores and 60 with matched KSS-Functional scores. KSS-Knee scores significantly increased from 63.78 to 83.13 (p 
doi_str_mv 10.1016/j.knee.2023.03.007
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subjects Isolated Polyethylene Exchange
Patient Outcomes
Revision Total Knee
Total Knee Replacement
title Reevaluating isolated polyethylene revision for instability after total knee arthroplasty
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