Transthoracic migration of a Kirschner wire from the humerus to the abdomen.

Migration of Kirschner wires after fracture fixation is a rare complication. Several cases of intrathoracic migration after humeral or clavicle fixation with this technique have been reported though. We describe an even rarer case where a wire migrated from the proximal humerus to the abdomen perforating the left thoracic cavity and hemidiaphragm.