title: Evaluation of disease progression during nonsteroidal antiinflammatory drug treatment: imaging by arthroscopy.
mesh_terms: D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000627:therapeutic use*; D001182:Arthroscopy; D001706:Biopsy; D018450:Disease Progression; D006801:Humans; D010003:Osteoarthritis / Q000188:drug therapy*; D013585:Synovitis / Q000188:drug therapy; D016896:Treatment Outcome