Duration of Immobilization After Reverse Total Arthroplasty for Proximal Humerus Fractures

The early range of motion group will be given a sling for comfort after their surgery. They will be told they can use their arm as tolerated and can remove the sling when comfortable immediately after surgery. They will be allowed to start passive range of motion, active assisted range of motion, and gentle active range of motion with therapy as tolerated with the exception of no internal rotation. They will also not be allowed to strengthen until 12 weeks after surgery. They will get formal physical therapy and be given a home exercise program as well that will be directed by their physical therapist

The immobilization group will be placed in a shoulder abduction sling immediately after surgery for four weeks. They will be allowed to start gentle passive range of motion with forward flexion to 120 degrees, abduction to 90 degrees, and external rotation to 30 degrees. They will receive a home exercise program and formal physical therapy with these limits. When they come out of the sling at four weeks they will start active range of motion and active assisted range of motion. They cannot internally rotate until 10 weeks after surgery. No formal strengthening until 3 months after surgery.