Doc recommends starting rehab after a medial end clavicle-fracture after only 4weeks to prevent a stiff shoulder. x-ray doesnt show union. too fast?

Rehab clavicle Fx: It usually takes 12 weeks for fractures to heal, so I would not expect to see significant callus formation this early. As long as the fracture is adequately reduced and immobilized, healing should occur. Lack of shoulder movement over a prolonged period can result in adhesive capsulitis. A licensed physical therapist will be able to guide appropriate therapy to prevent this condition.