Cost-Benefit Comparison of the Oxford Knee Score and the American Knee Society Score in Measuring Outcome of Total Knee Arthroplasty
Medalla, Greg Anthony; Moonot, Pradeep; Peel, Tamlyn; Kalairajah, Yegappan; Field, Richard EKnee
The American Knee Society score (AKSS) and the Oxford Knee score (OKS) are validated outcome measures for evaluation of total knee arthroplasties (TKAs). We investigated whether patient self-assessment using the OKS offers a viable alternative to clinical review using the AKSS. Preoperative, 2-year, 5-year, and 10-year postoperative OKS and AKSS were reviewed from TKA patients. The scores were analyzed using the Pearson correlation. There was good correlation of OKS and AKSS at 2 years. This implies that patient self-assessment is a viable screening tool to identify which patients require clinical review, at 2 years, after TKA. However, the moderate correlation at 5 and 10 years indicates that clinical evaluation remains necessary at these time points.
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