- Patient meets at least one of the contraindications: Soft or inadequate humeral bone (including osteoporosis and extensive avascular necrosis or rheumatoid arthritis) leading to poor implant fixation, Metaphyseal bony defect (including large cysts), Posttraumatic tuberosity non-union, Signs of infection, Irreparable cuff tear, Revision from a failed stemmed prosthesis, Charcot's shoulder (neuroarthropathy)