Fig. 2. (A) Trocar of the Michele trephine. (B) Stylet of the Michele trephine. (C) Harvested auto iliac crest bone. (D) A 3.5-mm burr sheath. (E) Using the trephine stylet, auto iliac bone was packed into the 3.5-burr sheath, and subsequently, bone was inserted into the scaphocapitate joint.