Clinical Research Directory

Inclusion Criteria: * \> 55 years of age. * Candidate for a primary reverse total shoulder arthroplasty. * Capable of completing self-administered questionnaires. * Be willing and able to return for all study-related follow-up procedures. * Able and willing to give informed consent. * Proficient in the English language. Exclusion Criteria: In-Clinic: * Patients planning on undergoing a Primary Reverse Shoulder Total Arthroplasty due to proximal humeral fracture. * Previous shoulder surgery including previous total shoulder arthroplasty or reverse total shoulder arthroplasty or hemiarthroplasty, or instability repairs * Active bacterial infection of the shoulder. * Any concomitant shoulder procedure. * Additional ipsilateral or contralateral upper limb pathology that requires active treatment (i.e. surgery or brace). * Inflammatory arthropathy. * Diagnosed with Rheumatoid arthritis * Diagnosed with gout. * Subject is on chronic anticoagulation due to a bleeding disorder or has taken anticoagulants within 10 days prior to surgery. * Peripheral vascular disease or other vascular disorders that would impair healing. * Peripheral neuropathy or other neurological disorders that may impair the patient to ambulate. * Patient is on workers compensation. * Any condition requiring chemotherapy. * Active tobacco user or former tobacco user who is not free of using tobacco for 8 weeks. * Uncontrolled Diabetes Mellitus with an HbA1C \> 7.5%. * Current drug or alcohol abuse. * Major medical illness (life expectancy less then 2 years or unacceptably high operative risk) * Suspicion of cervical radiculopathy or myelopathy. * Deltoid insufficiency on physical examination. Intra-operative: • Iatrogenic glenoid fracture Post-operative: * Neurological injury of the upper extremity. * Complications from Primary Reverse Shoulder Total Arthroplasty (i.e. post-operative infection, bleeding, hardware failure).