A 45-year old male patient suffered mutilation of his fingers except for the thumb in the right hand, and a crush injury of the whole left hand simultaneously while operating a rolling machine. The right hand was reconstructed with a double 2nd-toe implantation. After training his pinch motion in the right hand, a myoelectric prosthesis was attached to the left hand. He used his right hand for pinching task and the left hand for grasping task. His DASH score was 173 before functional reconstruction of the bilateral hands, and it was 84 at 5 years after treatment. A comparison was made concerning the functional results between the right hand reconstructed with the toe transfer and the left hand with the myoelectric prosthesis in order to discuss the prognosis for each treatment.