Cost-Benefit Comparison of the Oxford Knee Score and the American Knee Society Score in Measuring Outcome of Total Knee Arthroplasty

Relationship between patients' and clinicians' assessments of health status before and after knee arthroplasty

“…Before surgery, the moderate correlation found between the OKS and the AKSS Functional Score (−0.55) was the same as the two smaller, previous studies 3 4. However, we found only a poor correlation (−0.23) with the AKSS Knee Score compared with previous reports of −0.42 and −0.47.…”

Younger Patients Report Greater Improvement in Self-Reported Function After Knee Joint Replacement

“…Rather, they suggest that the OKS may be used as an integral component of or supplement to good practice that would allow greater inclusion of the patient's input and thereby add to the overall management of the patient. The ability of patients to provide meaningful perception of their functional status has been reported, 12,34,42 and, although previously published results 32,38 have shown the clinical potential of the OKS post-TKR, the current results lend validity to the integration of the OKS into regular clinical practice pre-TKR for patients with knee osteoarthritis.…”

“…The importance of the OKS has been supported by previously published reports that have investigated the OKS as a viable clinical tool. 32,38 Medalla et al 32 found that the OKS showed good correlation (90%) with the American Knee Society 21 score (clinician-assessed questionnaire) up to 2 years after TKR, specifically in detecting poor to fair American Knee Society scores (50% of patients reported poor to fair scores 2 years after TKR). The authors suggested that if the OKS was used instead of the American Knee Society score, 50% less clinical reviews would have been required, and that the OKS may be sufficient to monitor the outcome after TKR in the short term, thereby possibly reducing the demand on the resources of the clinic.…”

Can we accurately predict outcome after hip and knee replacement?

“…12,14,15 The Knee Society Clinical Rating System (KSS) is widely used and responsive. 11,15,16 However, its reliability and validity have been questioned, and the tool is under revision. 17 Lingard et al 11 compared the validity and responsiveness of the KSS with the WOMAC and SF-36 in 697 primary TKA patients.…”

“…Medalla et al 16 also sought to determine the relationship between patient selfassessed outcome (Oxford Knee Score) and a physicianassessed tools (KSS). 16 These investigators found that the Oxford Knee Score was valid in comparison to KSS at 2 years, but less so at 5 and 10 years, suggesting that direct clinical evaluation is still necessary at those time points. Ragab 34 reported the relationship between HHS and satisfaction.…”