A degenerative joint disease: Osteoarthritis is sometimes referred to as a degenerative joint disease, associated as it is with the "wear and tear" of joints in the hands, hips, and knees.
Rheumatoid arthritis: Rheumatoid arthritis (RA) is an autoimmune and inflammatory disease and the second most common form of the disorder.
Osteoarthritis: Osteoarthritis (OA) is the most common form of arthritis.
A painful process: Over time, the cartilage starts to roughen and thin out, meaning that the tendons and ligaments have to work harder.