An orthopedic brace is provided that provides for immobilization of an injured or postoperative extremity in an abduction position and also allows the user to control internal and external rotation of the extremity. A brace is provided with two opposing members, one opposing member having a torso resting surface and the other opposing member having a forearm support surface, and an adjustment mechanism that allows a user to expand or contract the orthopedic brace to provide for internal and/or external rotation of a humeral head of the user through the forearm of the user.