A multipart intervertebral implant is provided which includes an implant portion and an implant extender portion. The implant portion and the implant extender portion can be fastened together using any known fastening means including pins, interlocking structure (e.g., dovetail, tongue and groove, etc.),...http://www.google.com/patents/US20030036798?utm_source=gb-gplus-sharePatent US20030036798 - Intervertebral implants
