Patent ID: 8267999

Claim:
An intervertebral disc prosthesis for substitution of a fibrocartilaginous disc between adjacent vertebra in a spinal column comprising: an upper plate having a curved lower surface; a lower plate having an upper surface; a core having an upper surface and a lower surface, the upper surface of the core being curved and configured for contact with at least part of the curved lower surface of the upper plate and the lower surface of the core being configured for contact with at least part of the upper surface of the lower plate, said contact of the lower surface of the core with at least part of the upper surface of the lower plate being configured for translation movements of the core with respect to the lower plate along an axis substantially parallel to the upper surface of the lower plate and for rotation movements of the core with respect to the lower plate around an axis substantially perpendicular to the upper surface of the lower plate when the intervertebral disc prosthesis is assembled; and a stop comprising a male portion and a female portion each located along an edge of the prosthesis, the male portion and the female portion each configured to limit translation movements of the core with respect to lower plate and rotation movements of the core with respect to the lower plate.