[Osseous avulsion injury of the extensor carpi radialis brevis tendon from the base of the 3rd metacarpal bone].

An uncommon case of a closed avulsion fracture to the base of the third metacarpal bone by the extensor carpi radialis brevis tendon is described. The dislocation of the small bony fragment was reduced by open reposition and internal fixation with two Leibinger mini-screws.