An intervertebral endoprosthesis for insertion into the intervertebral space between two adjacent vertebrae (V1,V2) is provided that includes first (12) and second (14) base members, each having a first surface configured to engage one of the vertebrae and a second opposite surface and a resilient insert (16) disposed between the base members. The insert includes an outer shell (60) defining an interior chamber (62) and is disposed in contacting engagement with the second surface of each of the base members. The resilient insert further includes a core (64) disposed within the chamber and connected to the outer shell. The intervertebral endoprosthesis further includes first (18a) and second (18b) coupling members, each of the coupling members extending between the core of the resilient insert and one of the base members. The first and second coupling members independently couple the first and second base members to the resilient insert, wherein the first and second base members are movable independently of one another and the adjacent vertebrae are movable independently of one another when the intervertebral endoprosthesis is inserted into the disc space.
