An anterior spinal implant includes a superior end face, an inferior end face and a sidewall extending between the superior end face and the inferior end face. The superior end face and the inferior end face are convex. In one application, the superior and inferior end faces are convex. The sidewall...http://www.google.es/patents/US20050149188?utm_source=gb-gplus-sharePatente US20050149188 - Anterior spinal implant
