ROBOTIC SYSTEM FOR SHOULDER ARTHROPLASTY USING STEMLESS IMPLANT COMPONENTS

A robotic surgery system (10) for preparing a humerus (H) to receive a shoulder implant (102) comprises a robotic manipulator (56), a cutting tool (22) to be coupled to the robotic manipulator (56), a navigation pointer (106) configured to be tracked by the surgical system (10), a localizer (34) configured to track movement of the cutting tool (22) and the humerus (H), and a controller (26, 54) coupled to the robotic manipulator (56) and the localizer (34). The controller is configured to determine positions of a plurality of landmarks on the humerus (H) using the navigation pointer (106), based on the plurality of landmarks, automatically define a virtual intramedullary axis (MA) of the humerus (H), define a pose of a virtual resection object (PH, RO) in a coordinate system, based on a location of the virtual intramedullary axis (MA) and the plurality of landmarks, wherein the virtual resection object (PH, RO) defines a volume of material to be removed from the humerus (H) to receive the shoulder implant (102), and to operate the robotic manipulator (56) to control movement of the cutting tool (22) relative to the humerus (H) based on the virtual resection object (PH, RO) for preparing the humerus (H) to receive the shoulder implant (102).