Osteoarthritis

**Semantic type:** Disease or Syndrome

**Definition:** A noninflammatory degenerative joint disease occurring chiefly in older persons, characterised by degeneration of the articular cartilage, hypertrophy of bone at the margins and changes in the synovial membrane. It is accompanied by pain and stiffness, particularly after prolonged activity.

**Synonyms:** - DEGENERATIVE JOINT DISEASE