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Rate of cartilage loss at two years predicts subsequent total knee arthroplasty: a prospective study


Cicuttini, F and Jones, G and Forbes, A and Wluka, A, Rate of cartilage loss at two years predicts subsequent total knee arthroplasty: a prospective study, Annals of the Rheumatic Diseases, 63, (9) pp. 1124-1127. ISSN 0003-4967 (2004) [Refereed Article]

DOI: doi:10.1136/ard.2004.021253


Objective: To determine whether cartilage volume loss is an independent predictor of knee replacement. Design: Prospective community based, four year prospective cohort study. Methods: 123 subjects with mild to moderate symptomatic radiographic knee osteoarthritis were recruited by either advertising, the Victorian branch of the Arthritis Foundation of Australia, treating general practitioners, orthopaedic surgeons, or rheumatologists; 113 completed the study. Magnetic resonance imaging was carried out at baseline and at 2 years on the symptomatic knee. Rate of change in tibial cartilage volume was calculated. Subjects were then followed up at year 4 to determine whether they had undergone a knee replacement. Results: The rate of tibial cartilage loss over two years was an independent predictor of knee replacement at four years. For every 1% increase in the rate of tibial cartilage loss there was a 20% increase risk of undergoing a knee replacement at four years (95% confidence interval, 10% to 30%). Those in the highest fertile of tibial cartilage loss had 7.1 (1.4 to 36.5) higher odds of undergoing a knee replacement than those in the lowest fertile. WOMAC score at baseline, female sex, and tibial bone size (but not age and radiographic score) were also predictors of knee replacement. Conclusions: The data suggest that treatment targeted at reducing the rate of knee cartilage loss in subjects with symptomatic osteoarthritis may delay knee replacement. This has important implications in terms of prevention and therapeutic interventions in osteoarthritis.

Item Details

Item Type:Refereed Article
Research Division:Medical and Health Sciences
Research Group:Public Health and Health Services
Research Field:Epidemiology
Objective Division:Health
Objective Group:Clinical Health (Organs, Diseases and Abnormal Conditions)
Objective Field:Skeletal System and Disorders (incl. Arthritis)
UTAS Author:Jones, G (Professor Graeme Jones)
ID Code:31755
Year Published:2004
Web of Science® Times Cited:167
Deposited By:Menzies Centre
Deposited On:2004-08-01
Last Modified:2005-05-24

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