Rehabilitation With the Shoulder Pacemaker

The investigators purpose of the proposed study is to use the FDA approved Shoulder Pacemaker device in patients undergoing reverse shoulder arthroplasty and study the functional outcomes compared to a standard post-operative rehabilitation program. The investigators hypothesize that use of the Shoulder Pacemaker reduce pain and will allow for improved range of motion and function in patients undergoing RSA. The findings of this research may very well improve function in RSA patients through a novel, non-invasive approach.

Inclusion Criteria: * Patients indicated for primary reverse shoulder arthroplasty * Surgery at University of Utah Facilities * Patients between the ages 18-80. Exclusion Criteria: * Prior ipsilateral shoulder arthroplasty * Inability or unwillingness to participate in the rehabilitation protocol * Prior cardiac pacemaker or spinal cord stimulator * Age over 80 * History of periscapular surgery * History of ipsilateral neurologic injury * Prisoners * Patients requiring prolonged immobilization deviating from standard protocol * Patients who have an implantable medical device or other electrical device.