An implantation apparatus for preparing adjacent vertebral bodies to receive an intervertebral implant including a plurality of keels. The implantation apparatus includes an elongated handle portion, and a template portion carried at a distal end of the handle portion substantially perpendicularly to...http://www.google.com/patents/US7780676?utm_source=gb-gplus-sharePatent US7780676 - Intervertebral implantation apparatus