Kienbock’s disease is a condition where the blood supply to the lunate (one of the small bones of the wrist), is interrupted. Bone requires a regular blood supply for nourishment in order to survive. If the blood supply is halted, the bone can die. This bone death is called osteonecrosis. Damage to the lunate can cause a stiff painful wrist and, over time, can lead to arthritis. The goals for treating Kienbock’s disease are to relieve the pressure on the lunate and to attempt to restore blood flow within the bone.