This is a device of external support for the repair and the reduction of a fracture of the humeral head in a patient by fixing of the two parts (2a, 2b) of the humerus by means of external media, distinguished for being understood by a rod support (4) for rete R at least two retaining pins (5a, 5b)Intended to be inserted into substantial and vertically in the humerus head, and also in the actual body (2b) of the humerus (2).