An allograft spinal implant includes a generally planar superior end face, a generally planar inferior end face and a generally cylindrical sidewall. The generally cylindrical sidewall extends between the superior end face and the inferior end face. At least one of the superior end face and the inferior...http://www.google.es/patents/US7018412?utm_source=gb-gplus-sharePatente US7018412 - Allograft spinal implant
