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To investigate the risk factors for meniscal damage, an important determinant of knee osteoarthritis.We studied 243 men and women aged 20-59 years in whom the diagnosis of a meniscal tear was confirmed for the first time at arthroscopy, over a 25 month period, in 2 British hospitals. Each case was compared with one or 2 community controls, matched by age and sex, who were registered with the same general practitioner. Information on exposure to risk factors was obtained by a structured questionnaire and physical examination.Meniscal tear was strongly associated with participation in sports during the 12 months preceding the onset of symptoms; the risk was particularly high for soccer (OR 3.7; 95% CI 2.1-6.6). Higher body mass index and occupational kneeling (OR 3.8; 95% CI 1.3-11.0) and squatting (OR 2.9; 95% CI 1.0-8.0) were associated with an increased risk of degenerative meniscal lesions, after adjustment for social class, joint laxity, and sports participation. Joint laxity was associated with degenerative meniscal lesions independently of occupational physical activity, sports, and obesity.Our results confirm the importance of sporting activities entailing knee torsion in acute meniscal tear. They also point to a role for occupational activity, adiposity, and joint laxity in the pathogenesis of degenerative meniscal lesions. Modifying these mechanical risk factors may serve to reduce the risk of meniscal injury and may also help to prevent later knee osteoarthritis.

Type

Journal article

Journal

The Journal of rheumatology

Publication Date

03/2002

Volume

29

Pages

557 - 563

Addresses

MRC Environmental Epidemiology Unit, University of Southampton, UK.

Keywords

Humans, Osteoarthritis, Knee, Joint Instability, Occupational Diseases, Athletic Injuries, Knee Injuries, Risk Factors, Regression Analysis, Case-Control Studies, Posture, Soccer, Adult, Middle Aged, Female, Male, Interviews as Topic, Tibial Meniscus Injuries