An interbody spinal implant for insertion at least in part into an implantation space formed across a disc space between adjacent vertebral bodies of a human spine and into at least a portion of the endplates of the vertebral bodies. The implant includes a body having a leading end for insertion first...http://www.google.ca/patents/US20050267578?utm_source=gb-gplus-sharePatent US20050267578 - Ratcheted bone dowel having smooth sides and method for use thereof
