Short-stemmed arthroplasty with glenoid preoperative planning

Abstract Total shoulder arthroplasty implant design, instrumentation, and outcomes continue to evolve; however, accurate glenoid placement remains a challenge especially in cases of glenoid deformity. Knowledge that malpositioning of the glenoid can lead to inferior outcomes and glenoid component loosening has led to the development of patient specific instrumentation (PSI). The ideal PSI system should be consistent, reliable, cost-effective, reusable, and robust enough to withstand applied stress during difficult exposures. In addition, short-stemmed humeral components appear to offer several advantages over the traditional length stems.