Instrument for preparing an implant support surface

摘要

An instrument for preparing the glenoid surface of a shoulder joint to receive a prosthetic component having a feature closely conforming to the surface. The prosthetic component provides a bearing surface for a head portion of a humerus. The instrument includes a guide (156) having a first feature (160) and a second feature (162) and a tool (158). The tool is used for cooperation with the first feature for preparing the surface. The first feature is adapted to control the position of the tool at least partially as it prepares the surface. The second feature is adapted to assist in positioning of the guide with respect to the joint.