Does Undergoing a Prehabilitation Protocol Aimed at Optimizing Scapulothoracic Mobility and Strengthening Improve Internal Rotation After Reverse Shoulder Arthroplasty?

Inclusion Criteria: • Patients aged 40-80 * Undergoing primary RSA for glenohumeral osteoarthritis or rotator cuff arthropathy * Must be able to read and speak English * Willing and able to attend a monthly therapy session and perform exercises at home for a minimum of 6 weeks before surgery * Willing and able to participate in postoperative monitoring for a minimum of 2 years Exclusion Criteria: * Patients under the age of 40 and over the age of 80. * Diagnosis of septic shoulder, fracture, or fracture sequelae, or tumor pathology of the ipsilateral shoulder * Pre-existing hand, wrist, or elbow pathology that limits elbow flexion or extension, or forearm pronation or supination * Planned to undergo synchronous procedure of the involved extremity (e.g., synchronous RSA and carpal tunnel release) * Tendon transfer (e.g., Latissimus dorsi transfer) performed intraoperatively * Patients without access to phone or email communication for at least 2 years after treatment * Revision shoulder arthroplasty