Referring now to FIG. 8B, a trough shaped base member 136 made of such material as silicone rubber or other suitable material is then applied to the bottom peripheral side of nerve end 132 as shown in FIG. 8B. If necessary, it is preferable to again trim proximal nerve end 132 so that edge 134 is even and substantially flush with base member 136 as shown in FIG. 8B.