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We present a comparison of patient-reported outcomes (PROMs) in relation to patient age, in patients who had received a total (TKR) or unicompartmental knee replacement (UKR). The outcome was evaluated using the Oxford knee score (OKS), EuroQol (EQ-5D) and satisfaction scores. Patients aged 65 to 84 years demonstrated better pre-operative function scores than those aged < 65 years (OKS, p = 0.03; EQ-5D, p = 0.048) and those aged ≥ 85 years (OKS, p = 0.03). Post-operative scores were comparable across age groups, but a linear trend for greater post-operative improvement in OKS and EQ-5D was seen with decreasing age (p < 0.033). The overall mean satisfaction score at six months was 84.9, but those aged < 55 years exhibited a lower mean level of satisfaction (78.3) compared with all other age groups (all p < 0.031). The cumulative overall two-year revision rate was 1.3%. This study demonstrates that good early outcomes, as measured by the OKS and EQ-5D, can be anticipated following knee replacement regardless of the patient's age, although younger patients gain greater improvement. However, the lower satisfaction in those aged < 55 years is a concern, and suggests that outcome is not fully encapsulated by the OKS and EQ-5D evaluation, and raises the question whether the OKS alone is an appropriate measure of pain and function in younger, more active individuals.

Original publication

DOI

10.1302/0301-620x.95b1.28061

Type

Journal article

Journal

The bone & joint journal

Publication Date

01/2013

Volume

95-B

Pages

38 - 44

Addresses

University of Oxford, Nuffield Department of Orthopaedics, Rheumatology & Musculoskeletal Sciences, Windmill Road, Oxford OX3 7LD, UK. derfel.williams@ndorms.ox.ac.uk

Keywords

Humans, Osteoarthritis, Knee, Pain Measurement, Treatment Outcome, Arthroplasty, Replacement, Knee, Reoperation, Health Status Indicators, Linear Models, Logistic Models, Follow-Up Studies, Age Factors, Adult, Aged, Aged, 80 and over, Middle Aged, Patient Satisfaction, Female, Male, Surveys and Questionnaires