Teenager who cannot move their left shoulder after being pushed into a metal beam

Radiograph of anterior shoulder dislocation with Hills-Sachs lesion
AP (upper left) and axillary (above right) radiographs of the left shoulder show the left humeral head to be displaced anteriorly and medially in relation to the glenoid fossa. Post-reduction AP radiograph of the left shoulder (below) shows a defect in the posterolateral aspect of the humeral head.

The diagnosis was an anterior shoulder dislocation with a Hills-Sachs lesion post reduction.