Journal
ARCHIVES OF ORTHOPAEDIC AND TRAUMA SURGERY
Volume 133, Issue 5, Pages 689-694Publisher
SPRINGER
DOI: 10.1007/s00402-013-1728-3
Keywords
Satisfaction; Total knee replacement; Outcome; Oxford score; Thresholds
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The aim of this study was to identify threshold values in the pre- and post-operative Oxford knee score (OKS), and change in the score for differing levels of patient satisfaction with their total knee replacement (TKR). We prospectively collected pre-operative and 1-year post-operative OKS for 2392 patients undergoing a TKR. Patient satisfaction was categorically assessed, according to whether they were: very satisfied, satisfied, neutral, and unsatisfied. Receiver operating characteristic curve analysis was used to identify thresholds in the OKS score that identified each level of patient satisfaction. The post-operative OKS was the most accurate predictor of the level of patient satisfaction (area under the curve = 0.86). Very satisfied patients had a threshold value in the post-operative OKS of a parts per thousand yen36, which decreased to a parts per thousand yen27 points for satisfied patients, and further still to a parts per thousand currency sign25 for unsatisfied patients. The threshold values, we have identified for the different levels of satisfaction using the post-operative OKS, which is the most accurate predictor, can be used to predict level of patient satisfaction and give quantification of the OKS.
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