Tashjian RZ, et al. - This study focused on the outcomes of large structural autografting from the humeral head to the glenoid during primary reverse total shoulder arthroplasty (RTSA). Findings demonstrated that this surgical technique afforded marked improvements in active forward elevation, pain, and function, with a low complication rate and can reliably be used to achieve correction of large (up to 35°) glenoid defects with a 93% chance of baseplate survival and a 100% chance of graft incorporation in the short-term.