Intervertebral disc

A motion disc comprising:

• a) a first prosthetic vertebral endplate having
• i) an outer surface adapted to mate with a first vertebral body,
• ii) an inner surface comprising a first articulation surface,
• iii) a first body portion between the inner and outer surfaces of the first prosthetic vertebral endplate
• wherein the inner surface of the first prosthetic vertebral endplate has a recess extending therefrom into the first body portion and forming a first locking surface and a first articulation surface, and
• b) a second prosthetic vertebral endplate having
• i) an outer surface adapted to mate with a second vertebral body,
• ii) an inner surface comprising a second articulation surface,
• iii) a second body portion between the inner and outer surfaces of the second prosthetic vertebral endplate,
• wherein the inner surface of the second prosthetic vertebral endplate has a recess extending therefrom into the second body portion and forming a second locking surface and a second articulation surface, and
• c) a connector comprising a shank and first and second end portions,
• wherein the first end portion of the connector comprises a first locking surface and a first articulation surface, and wherein the second end portion of the connector comprises a second locking surface and a second articulation surface,
• wherein the first and second articulation surfaces are adapted to form an articulating interface, and
• wherein the first and second locking surfaces are adapted to form a locking interface.