Posterior sternoclavicular joint dislocation in a wrestler.

Injury to the sternoclavicular joint is uncommon but may be a life-threatening injury if the diagnosis is not made acutely. Posterior sternoclavicular joint dislocation is associated with a number of complications including tracheal tear or trauma to the great vessels. Diagnosis by conventional radiography is difficult. Even experienced examiners may miss the diagnosis unless a high level of suspicion exists and the appropriate imaging studies are ordered. Computed tomography is the imaging modality of choice, and prompt diagnosis is essential for early, successful reduction of the joint.