Running and primary osteoarthritis of the hip.
D000368:Aged; D005500:Follow-Up Studies; D006621:Hip Joint / Q000000981:diagnostic imaging; D006801:Humans; D007592:Joint Diseases / Q000453:epidemiology; D008297:Male; D010003:Osteoarthritis / Q000000981:diagnostic imaging / Q000453:epidemiology*; D011859:Radiography; D013177:Sports