Essex-Lopresti forearm injury

The lateral and AP plain radiographs of the forearm above reveal a subtle radial head fracture (thick arrow) associated with displacement of the proximal ulna (arrows). Such displacement indicates disruption of the distal radioulnar joint (DRUJ). The combination of radial head fracture with injury of the interosseous membrane and DRUJ is commonly referred to as an Essex-Lopresti injury.