A shoulder arthroplasty system in one embodiment includes a combination device including a base portion defining a distal plane, a cavity extending proximally from the base portion, the cavity configured to receive a mounting portion of a humeral base component, a convex outer surface, the convex outer surface sized to replicate at least in part an outer bearing surface of a humeral head component, and a bore extending between the cavity and the convex outer surface, and a guide pin sized to fit within the bore.
