Patent ID: 8545564

Claim:
An intervertebral implant comprising: a first baseplate having an outer vertebral body contact surface and an inner surface; an articulation member mounted on the first baseplate, the articulation member having a spherical outer surface with a recess therein, the recess having a stop surface; a housing mounted on the articulation member, the housing having an articulation surface for contact with the spherical outer surface of the articulation member, the articulation surface of the housing having a protrusion extending inwardly into the recess in the articulation member and; a second baseplate mounted on the housing, the second baseplate having an outer vertebral body contact surface and an inner surface having a spherical portion for contact with the spherical outer surface of the articulation member wherein when the spherical outer surface of the articulation member is in contact with both the articulation surface of the housing and the spherical portion of the inner surface of the second baseplate, articulation of the first and second baseplates with respect to one another is limited when the protrusion of the articulation surface of the housing contacts the stop surface of the recess of the articulation member.