An intervertebral implant having a composite wedge/dowel configuration is provided. The intervertebral implant includes a central body portion and a pair of radially extending wings. The radially extending wings can be tapered from a first end of the implant to the second end of the implant along an...http://www.google.co.uk/patents/US6547823?utm_source=gb-gplus-sharePatent US6547823 - Intervertebral implant