Sternoclavicular joint dislocations are relatively rare injuries and account for 3% of all injuries to the shoulder girdle. Although the majority of these injuries result in an anteriorly directed dislocation, it is the less common posterior sternoclavicular joint dislocation that carries the greatest risk to the patient and at times is life threatening. Anterior dislocations are often treated nonoperatively with a sling or figure-of-eight bandage, but the standard of treatment for posterior dislocations is closed or open reduction. A variety of operative procedures exist to treat sternoclavicular dislocations, including resection of the medial clavicle, suture fixation, stabilization with wires, pins, or plates, and reconstruction with allograft tendon or tenodesis.