Rheumatology is the study of diseases that affect the bones, joints, tendons and muscles. Rheumatologists are experts in the treatment of arthritis and related disorders. Rheumatologists diagnose and treat inflammatory and autoimmune diseases, such as rheumatoid arthritis, systemic lupus erythematosus, polymyositis, vasculitis, gout, tendonitis, bursitis, and Lyme disease, as well as painful or degenerative conditions of the back, neck, extremities or other areas of the body. In addition, they are experts in the evaluation and treatment of osteoporosis. The Division of Rheumatology at Abington Hospital – Jefferson Health offers the most advanced treatments for arthritis and osteoporosis available. They are very involved in ongoing research.