Abstract: The invention concerns a prosthesis for intervertebral discs designed to be substituted for fibrocartilaginous discs ensuring connection between the vertebrae of the spinal column and its instruments for implantation.The prosthesis is composed mainly of two plates (110, 120) each equipped with anchoring flaps (1110, 1210) separated by a joint (20) composed of a spherical cap (21) with a cylindrical base (22), of the same diameter, made in the upper side of the lower plate (120). Each of the plates (110, 120) includes, on the back, threaded holes (115, 116, 125, 126) located parallel to the anchoring flaps (1110, 1210).

Abstract: The invention relates to a process and device for securing, elongating and compressing a spinal column, of simple design, which is easy and precise in use, leaving no projecting part. The process of the invention for straightening and supporting a spinal column consists in securing screwed implants (10) or hooks on either side of the curvature of the spin and interlinking them by at least two rods (20,21) designed to act as struts; said rods (20,21) are introduced longitudinally into grooves (113) perpendicular to the screw (120) fitted in the body (110) of the implants (10) or hooks and then fixed in the base of the grooves (113) by crimping resulting from the deformation of the sides of the groove (113) by the closing of its sides; said deformation is obtained via a conically-threaded nut (30) and a cylindrical male thread cut around the body (110) of the implants (10). Application: straightening and supporting the spinal column in the event of scoliosis or fracture, for example.