The most common type of arthritis is osteoarthritis. It affects many of us as we grow older. It is sometimes called degenerative arthritis because it involves the breakdown of cartilage and bones. This causes pain and stiffness. Osteoarthritis usually affects fingers and weight-bearing joints including knees, feet, hips, and back. It affects both men and women and typically occurs after age 45. Treatments include pain relievers or anti-inflammatory drugs, exercise, heat or cold, joint protection, and sometimes surgery.