title: Physical activity and knee osteoarthritis: answers and questions.
authors.forename: Marian A
authors.initials: MA
authors.lastname: Minor
mesh_terms: D018771:Arthralgia / Q000209:etiology; D001696:Biomechanical Phenomena; D001835:Body Weight / Q000502:physiology; D018450:Disease Progression; D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging / Q000503:physiopathology; D009043:Motor Activity / Q000502:physiology*; D020370:Osteoarthritis, Knee / Q000000981:diagnostic imaging / Q000209:etiology* / Q000503:physiopathology*; D011634:Public Health; D011859:Radiography; D012307:Risk Factors