League Players

potential risk factor for osteoarthritis. How-ever, no previous study has addressed playing-career injuries and subsequent osteoarthritis in a large sample of former athletes. The purpose of this study was to describe the prevalence and determinants of arthritis and osteoarthritis in retired professional football players. Meth-ods: Self-reported arthritis prevalence and ret-rospectively-recalled injury history were examined in a cross-sectional survey of 2,538 retired football players. Results: Football play-ers reported a high incidence of injury from their professional playing days (52.8 % reported knee injuries, 74.1 % reported ligament/tendon injuries, and 14.2 % reported anterior cruciate ligament tears). For those under 60 years, 40.6 % of retired NFL players reported arthri-tis, compared with 11.7 % of U.S. males (prev-alence ratio =3.5, 95%CI: 3.3 to 3.7). Within the retired NFL player cohort, osteoarthritis was more prevalent in those with a history of knee injury (prevalence ratio = 1.7, 95%CI: 1.5 to 1.9) and ligament/tendon injury (prevalence ratio = 1.6, 95%CI: 1.4 to 1.9). Conclusions: In males under the age of 60, arthritis is over 3 times more prevalent in retired NFL players than in the general U.S. population. This excess of early-onset arthritis may be due to the high incidence of injury in football