The development of a bone spur is fairly common after age 60, and is often, though not always, accompanied by pain or tenderness in the affected joint. Joints represent the intersection of bone, muscle, ligaments, and tendons, and are thus susceptible to injury from any of these sources. Often, such physical injuries or inflammation have the secondary effect of spur formation. In particular, there is a very striking relationship between occurrence of arthritis, which is essentially an inflammatory disease, and osteophytosis (spur development) in the problematic joint.