ants of FIG. 2 and a cross section through a vertebra along line 3A-3A of FIG. 2. [0019]FIG. 3B is a top plan view of another embodiment of the implants of FIG. 3A and a cross section through a vertebra along line 3A-3A of FIG. 2. [0020]FIG. 3C is a top plan view of another embodiment of the implants of FIG. 3A and a cross section through a vertebra along line 3A-3A of FIG. 2. [0021]FIG. 4A is a t