title: Evaluation of disease progression during nonsteroidal antiinflammatory drug treatment: imaging X-rays.
mesh_terms: D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000627:therapeutic use*; D002358:Cartilage, Articular / Q000000981:diagnostic imaging* / Q000187:drug effects; D018450:Disease Progression; D006801:Humans; D020370:Osteoarthritis, Knee / Q000000981:diagnostic imaging* / Q000188:drug therapy; D011859:Radiography; D015203:Reproducibility of Results; D016896:Treatment Outcome