According to experts, osteoarthritis (OA) of the thumb is one of the most common forms of arthritis. The small joint on the bottom of the hand becomes stressed from a lifetime of pinching and grasping, and this causes it to break down. But doctors are using a new technique to stabilize the joint and eliminate pain. In this procedure, surgeons insert a small spacer between the bones in the joint that is made from a polymer called artelon. It looks and feels like a tiny lawn chair. This spacer...