Patent ID: 8012212

Claim:
An intervertebral prosthesis for replacement of an intervertebral disc, comprising: a first cover plate having a first outer face for connection to a first vertebral body and a first inner face forming a first spherical slide surface, the first cover plate having a dorsal edge, ventral edge, and lateral edges defining a perimeter of a circumferential edge, and a connection surface that extends at least partially between the edges of the circumferential perimeter, the connection surface being configured with a series of longitudinal ridges for connection to the first vertebral body; a second cover plate having a second outer face for connection to a second vertebral body and a second inner face, the second cover plate having a dorsal edge, ventral edge, and lateral edges defining a perimeter of a circumferential edge and a connection surface that extends at least partially between the edges of the circumferential perimeter, the connection surface being configured with a series of longitudinal ridges for connection to the second vertebral body; and a prosthesis core mounted on the inner face of the second cover plate, the prosthesis core forming a spherical slide surface with the inner face of the first cover plate; wherein the first cover plate and the second cover plate at their dorsolateral corners are configured with a set-back portion having an inclined transition surface that adjoins a plane of the circumferential edge having a height to a plane of the connection surface having a different height, the set-back portion configured without ridges on the inclined transition surfaces, and providing a space for receiving bone parts which have been left in a dorsolateral region upon shaping of a vertebral body surface.