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Factors affecting progression of knee cartilage defects in normal subjects over 2 years


Wang, Y and Ding, C and Wluka, AE and Davis, S and Ebeling, PR and Jones, G and Cicuttini, FM, Factors affecting progression of knee cartilage defects in normal subjects over 2 years, Rheumatology, 45, (1) pp. 79-84. ISSN 1462-0324 (2006) [Refereed Article]

DOI: doi:10.1093/rheumatology/kei108


Objectives. Cartilage defects are present in subjects with knee osteoarthritis (OA). Although they are often present in healthy subjects, there is little data on the natural history of cartilage defects. The aim of this study was to examine the change in cartilage defects over 2 yr and to identify factors associated with this change. Methods. One hundred and twenty-four healthy subjects underwent magnetic resonance imaging of their dominant knee at baseline and follow-up. Cartilage defects were scored (0-4) at five sites. Bone size was determined at medial and lateral tibial plateau and patella. Height, weight, body mass index and physical activity were measured by standard protocols. Results. Eighty-six subjects completed the study. The mean cartilage defect score of each tibiofemoral compartment increased over time. However, medial and lateral tibiofemoral defect score decreased in 5% of the subjects. Cartilage defects were more likely to progress in males than females in each individual compartment (P<0.001 for medial tibiofemoral, P=0.005 for lateral tibiofemoral and P=0.01 for patellar cartilage). Baseline cartilage defect score was negatively associated with the progression of cartilage defects in each compartment (all P<0.001). Conclusion. Although knee cartilage defects progressed over time in the majority of normal subjects, those of the highest severity tended to regress. Male gender and baseline cartilage defect score were the main factors associated with the progression of cartilage defects. Larger studies will be required to identify factors associated with the progression and regression of lesions. © The Author 2005. Published by Oxford University Press on behalf of the British Society for Rheumatology. All rights reserved.

Item Details

Item Type:Refereed Article
Research Division:Biomedical and Clinical Sciences
Research Group:Clinical sciences
Research Field:Rheumatology and arthritis
Objective Division:Health
Objective Group:Clinical health
Objective Field:Clinical health not elsewhere classified
UTAS Author:Ding, C (Professor Chang-Hai Ding)
UTAS Author:Jones, G (Professor Graeme Jones)
ID Code:41625
Year Published:2006
Web of Science® Times Cited:96
Deposited By:Menzies Institute for Medical Research
Deposited On:2006-08-01
Last Modified:2007-06-02

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