We report the week-to-week variation of the Oxford Knee and Oxford Hip Score (OKS, OHS) in individuals with severe osteoarthritis. People waitlisted for knee (n = 51) or hip arthroplasty (n = 52) were assessed twice, 1-week apart. There were no major week-to-week systematic biases in the scores. Limits of agreement (LOA) for both scores were wide (OKS, −9.5 to 6.6; OHS, −7.7 to 7). For most individual questions, the answers varied by ≤1 point in over 90% of participants. The week-to-week 95% LOA for the Oxford scores are unacceptably large, but variations within the individual questions are minimal. Consequently, reference to variation in the individual questions may be more useful for monitoring a patient’s preoperative clinical change than changes in the total Oxford score. We conclude that the total scores are not suitable for monitoring the progression of OA in individual patients.
The Journal of Arthroplasty, Volume 28, Issue 9, 1454 - 1458
Can the Oxford Scores Be Used to Monitor Symptomatic Progression of Patients Awaiting Knee or Hip Arthroplasty?Naylor, Justine M. et al.