[Paralysis of the opposition of the thumb in leprosy: value of the transplantation of the extensor indicis (author's transl)].

The transplantation of the extensor indicis to restore the opposition of thumb has been realized by two techniques: -- transplantation through the 2nd interosseous space with suture on the abductor pollicis brevis but the result was poor for the guide pulley resulting did not work well. -- transplantation with reflexion on the cubital side of the wrist which in 5 cases proved to be satisfactory. In medico cubital paralysis one must also cure the "cubital claw of the thumb". The surgical procedure, using a dispensable tendon, could be directly associated to the sutures of the proximal injuries of the cubital nerve as a temporary palliative.