The most common type of arthritis, osteoarthritis, generally develops from "wear and tear" of the cartilage and lubricating surfaces of the bones that connect at the joint. As we age, many of us will develop degenerative arthritis of one or more of our joints. This arthritis is characterized by destruction of the natural cushioning and lubricating surfaces of the joint and may be accompanied by bony overgrowth (bone spurs). In the most severe cases, all the cartilage will have worn away and there will be bone-on-bone contact.