Acromioclavicular joint separation

Acromioclavicular joint separations are common injuries that occur after a fall onto the point of the shoulder. The most common mechanism of injury is a fall off a bicycle, though falls during sports are also common.

The distal clavicle is stabilised mainly by the coracoclavicular (CC) ligaments in the superior/inferior plane and the acromioclavicular (AC) ligaments in the anterior/posterior plane (Figure 1).