Degenerative Arthritis Underlying Cause
The cause for osteoarthritis is unknown. However, aging, obesity, joint injury, joint stress, heredity, and muscle weakness all seem to play a role.
Osteoarthritis occurs when the cartilage, which cushions the joints, breaks down over time. Normally, the surface of the articular cartilage is smooth. In osteoarthritis, the surface of the joint cartilage becomes rough, and the joint becomes inflamed during use. When the cartilage breaks down completely, the surfaces of the bone rub against one another. This causes damage to the bone, and over time, the joint can become deformed and painful.
Continue to Degenerative Arthritis Types
- Cohen MD. Raising expectations for arthritis treatment. Biologic response modifiers are making remission possible. Postgrad Med. 2004 Nov;116(5):41-2, 48-50. 
- Corr M. The tolls of arthritis. Arthritis Rheum. 2005 Aug;52(8):2233-6. 
- Leirisalo-Repo M. Early arthritis and infection. Curr Opin Rheumatol. 2005 Jul;17(4):433-9. 
- Oliver S, Hill J. Arthritis in the older person: part 1. Nurs Older People. 2005 Jun;17(4):25-9. 
- Quinn MA, Emery P. Are early arthritis clinics necessary? Best Pract Res Clin Rheumatol. 2005 Feb;19(1):1-17.