Platform systems in shoulder arthroplasty

A platform system for shoulder arthroplasty can include a convertible modular humeral stem and/or a metal-backed glenoid component to facilitate straightforward conversion from either a hemiarthroplasty or anatomic total shoulder arthroplasty to a subsequent anatomic total shoulder arthroplasty, or more frequently, reverse total shoulder arthroplasty without any revision to the stem and/or glenoid baseplate. Recent studies have demonstrated a decreased rate of intraoperative humeral fracture, complications, and blood loss when a platform system is used and the humeral stem is not exchanged during revision arthroplasty. Future studies with larger patient cohorts are necessary to truly evaluate the potential value and limitations of this technology.