Lower Total Shoulder Arthroplasty Cost of Care at an Ambulatory Surgical Center Versus a Main Hospital.

Introduction: Total shoulder arthroplasty (TSA) is an increasingly common orthopaedic procedure. Expansion of TSA to outpatient surgical settings has the potential to reduce costs, although there is limited research on the cost and efficiency of this shift in surgical site of care. The purpose of this study is to compare costs and efficiency of TSA between an ambulatory surgical center (ASC) and a hospital.