Arthritis, also known as Osteoarthritis, degenerative joint disease and DJD is a mechanical irritation of the joint, usually due to unbalanced motion. The joint responds to the unbalanced and stressed motion with formation of bone spurs on the edges of the bone.
Exercise is widely regarded as the best treatment to slow the progression of joint breakdown. "Use it or lose it" is why strengthening motion so a joint moves through a full range of motion can reduce this mechanical damage. Daily posture exercise is one of the best ways to relieve pain as well as systematically move joints through a full range of motion.
*Osteoarthritis is different than rheumatoid arthritis, which is an inflammatory autoimmune disease that attacks the synovium, or lining, of the joint.