Osteoarthritis

**Definition:** A progressive, degenerative joint disease, the most common form of arthritis, especially in older persons. The disease is thought to result not from the aging process but from biochemical changes and biomechanical stresses affecting articular cartilage. In the foreign literature it is often called osteoarthrosis deformans.

**Tree numbers:** - C05.550.114.606 - C05.799.613

**Synonyms:** - Arthritis, Degenerative - Osteoarthrosis