Osteoarthritis

       Osteoarthritis a painful, degenerative joint disease that often involves the hips, knees, neck, lower back, or the small joints of the hands. Osteoarthritis usually develops in joints that are injured by repeated overuse in the performance of a particular job or a favorite sport or from carrying around excess body weight. Eventually this injury or repeated impact thins or wears away the cartilage that cushions the ends of the bones in the joint so that the bones rub together, causing a grating sensation. Joint flexibility is reduced, bony spurs develop, and the joint swells. Usually, the first symptom a person has with osteoarthritis is pain that worsens following exercise or immobility.
       Rheumatoid arthritis is an autoimmune inflammatory disease. An autoimmune disease is one in which the body releases enzymes that attack its own healthy tissues. In rheumatoid arthritis, these enzymes destroy the linings of joints causing pain, swelling, stiffness, deformity, and reduced movement and function. People with rheumatoid arthritis also may have systemic symptoms.