The main objective of this study is to compare patient-reported outcome measures (PROMs), and clinical and functional outcomes between RTSA with and without subscapularis repair. The specific aims for this study are:~Specific Aim 1:~To determine if there is a difference in PROM scores between RTSA with and without subscapularis repair during the 24-month postoperative period.~Specific Aim 2:~To determine if there is a difference between the two surgical approaches with respect to shoulder function, specifically range of motion and strength, during the 24-month postoperative period.~Specific Aim 3:~To determine if there is a difference in shoulder dislocation rates between RTSA with and without subscapularis repair during the 24-month postoperative period.~Specific Aim 4:~To determine if there is a difference in surgical complications, re-operation or revision rates between RTSA with and without subscapularis repair during the 24-month postoperative period.~Specific Aim 5:~To quantify the operative times for RTSA with and without subscapularis repair, and determine if there is a difference between the two approaches.
The purpose of this double-blind randomized controlled trial is to compare patient-reported, clinical, and functional outcomes in patients undergoing RTSA with and without subscapularis repair after placement of a modern lateralized implant over the course of 24-months postoperative.