This illustration shows the differences between a normal, healthy joint, a joint affected by osteoarthritis, and one affected by rheumatoid arthritis.
What Is the Difference Between Normal, Healthy Joints and Arthritic Joints?
A joint is where two bones meet to allow movement of body parts. Arthritis means joint inflammation. The joint inflammation of rheumatoid arthritis causes swelling, pain, stiffness, and redness in the joints. The inflammation of rheumatoid disease can also occur in tissues around the joints, such as the tendons, ligaments, and muscles. In some patients with rheumatoid arthritis, chronic inflammation leads to the destruction of the cartilage, bone, and ligaments, causing deformity of the joints. Damage to the joints can occur early in the disease and progress as the individual ages.