External holding device for repairing and reducing a fracture of the head of the humerus of a patient by holding the two parts (2a, 2b) of the humerus (2) in place by external means, characterized in that it is composed of a support rod (4) intended to retain at least two retention pins (5a, 5b), which are to be inserted substantially vertically into the head of the humerus and also into the actual body (2b) of the humerus (2).
