title: Is the progression of osteoarthritis phasic? Evidence and implications.
authors.forename: J R
authors.initials: JR
authors.lastname: Kirwan
authors.forename: C J
authors.initials: CJ
authors.lastname: Elson
mesh_terms: D018450:Disease Progression; D006801:Humans; D015207:Osteoarthritis, Hip / Q000175:diagnosis / Q000503:physiopathology* / Q000628:therapy; D020370:Osteoarthritis, Knee / Q000175:diagnosis / Q000503:physiopathology* / Q000628:therapy