Imaging of acute sports injuries of the shoulder girdle.

Acute injuries of the shoulder girdle commonly result from sports activities and lead to imaging studies. Radiologists who interpret these studies should be familiar with traumatic mechanisms and the imaging manifestations of glenohumeral dislocation, acromioclavicular sprain, rotator cuff tear, labral tear, osseous contusion or fracture, and myotendinous strain. Imaging findings are crucial for making accurate diagnoses, grading the severity of injuries, guiding treatment plans, and managing the athletes' expectations for rehabilitation and return to sport. In this review article, we address common and uncommon injuries in both young and mature athletes. Focusing on magnetic resonance imaging, we provide examples of classic injuries and discuss pitfalls that challenge diagnostic interpretation.