Acromioclavicular joint dislocation associated with a coracoid process fracture: report of 2 cases

Acromioclavicular (AC) joint dislocation associated with a coracoid process fracture is an uncommon injury. It generally occurs in young male adults in the context of high-energy injuries such as traffic accidents, falls from height, or sports injuries. According to some authors,7,25 their mechanism of injury is comparable to that of AC joint dislocations, except that instead of a rupture of the coracoclavicular (CC) ligaments, the tensile forces transmitted by these ligaments cause a fracture in the coracoid process, allowing the vertical displacement of the clavicle.