Patent ID: 7695516

Claim:
An intervertebral disc prosthesis comprising at least three pieces including an upper plate, a lower plate, and a core, at least one of the plates and the core being configured for movement of the core at least in translation at least in relation to said at least one of the plates according to an axis substantially parallel to that plate when the prosthesis is assembled, characterized in that the intervertebral disc prosthesis comprises two anatomic adaptation elements of which each has, on one hand, a surface configured for contact with a surface of a vertebra and, on the other hand, a face of which at least a part has a surface in contact with at least a pan of the plate opposite to which the anatomic adaptation element is mounted, the anatomic adaptation elements being fixed onto the plates via fixation means, and the anatomic adaptation elements comprise movable osseous anchorage elements that are fixed onto the anatomic adaptation elements upon fixing the anatomic adaptation elements onto the plates, and the movable osseous anchorage elements of the anatomic adaptation elements comprise at least a plate equipped with notches oriented to resist against the removal of the plate once it has been inserted into a vertebra, a far end of the plate bearing a part curved to fold over itself and intended to be interlocked as a hook onto an edge of an opening made in the vicinity of the periphery of the anatomic adaptation elements.