An intervertebral implant including: a central axis, upper and lower terminal parts and a convex joint element. Each of the terminal parts come to rest against the end surfaces of two adjacent vertebras and opposite first and second concave inner surfaces, respectively. The convex joint element is situated...http://www.google.fr/patents/US7597713?utm_source=gb-gplus-shareBrevet US7597713 - Intervertebral implant comprising a three-part articulation
Intervertebral implant comprising a three-part articulation
