Intervertebral disc prosthesis

An intervertebral disc prosthesis comprising:

• two plates to be anchored to a respective vertebrae, and an intermediate damping core placed between the two plates, the intermediate core comprising a first shell forming an articular surface for cooperating with a conjugate articular surface possessed by a first plate, and a flexible element placed between the first shell and a part for receiving the core, said first shell and said receiving part comprising means for guiding their mutual movement for bringing them closer or moving them away from each other, made possible by the flexibility of said flexible element;
• said receiving part comprises a cavity to snugly receive the flexible element, the cavity being delimited by a first peripheral wall and by a bottom wall, said first peripheral wall having an external peripheral face;
• and
• said first shell has a second peripheral wall forming an internal face, the internal face, when said first shell and the receiving part are in their assembling condition, coming into close proximity to said external peripheral face and being able to slide along the latter.