Comparison of Knee Osteoarthritis in Retired Professional Zurkhaneh Athletes and Non-Athletic Individuals

The advantages of physical activities have recently been suggested in preventing such chronic diseases as osteoarthritis. However, the effects severe physical activity may have on the musculoskeletal system of athletes are still unknown. The purpose of this study was to compare knee pain, existing symptoms, physical functions in daily activities, sports and recreation, and the quality of life of retired professional zurkhaneh athletes with that of non-athletes. In this cross-sectional study, 15 retired professional zurkhaneh athletes and 15 non-athletic individuals were purposefully selected. Clinical diagnosis and radiological findings were confirmed by an orthopedic surgeon and the translated version of the Knee Injury and Osteoarthritis Outcome Score (KOOS) questionnaire was also used. Statistical analysis of data was performed via Student's independent t-test at significance level of P < 0.05. The mean scores of knee pain (P = 0.001) and physical function issues in sport and recreation activities (P < 0.001) was significantly lower in the athletes compared to the non-athletes. This shows that osteoarthritis was much more severe in the zurkhaneh athletes. There is a higher risk of knee osteoarthritis in former professional zurkhaneh athletes.