Anterior Clavicle Dislocation Associated with Acromioclavicular Dislocation in a Soccer Player

Acromioclavicular (AC) joint injuries occur most commonly in active or athletic young adults and are increasing because of the rising popularity of sporting activities. Injuries to the AC joint are graded according to the amount of damage to the AC and coracoclavicular (CC) ligaments. Acromioclavicular injuries were classified initially by Allman and Tossy in 3 grades, which were later expanded by Rockwood. The modified classification of AC injuries has 6 types. However, only a few case reports on type IV have been reported in the literature, and these are almost always accompanied by posterior clavicle dislocation. There has been no report on anterior dislocation of the clavicle in AC joint dislocation, particularly due to sports injuries. Thus, we report a case of anterior dislocation of the clavicle in AC joint dislocation after a sporting injury and describe its presumed mechanism and treatment.