A disc prosthesis for use in the treatment of spinal disorders, characterized by comprising - at least one upper cover provided with at least one cavity and at least one curved surface contacting the vertebrae; - at least one bearing member comprising at least one outer surface, on which the upper cover can make a rotational motion and which has a structure compatible with and received by the cavity on the upper cover, and at least one mount (1 a) extending in the form of a keel and having an inner surface (1 b) with a partial sphere shape; - at least one movement member, which is provided with at least one outer surface which has a partial sphere shape, which is in contact and compatible with said inner surface of the mount provided in the bearing member, and which is received by this mount (1 a) so as to allow rotational, horizontal and vertical movements with respect to bearing member and move synchronously with the upper cover; - at least one lower cover provided with at least one cavity which is compatible to receive said mount, wherein said mount is fixed to the cavity disposed in the lower cover by means of a tight fit, and at least one outward curved surface on the side thereof making contact with the vertebrae; - at least one connection member extending in the form of a keel from the cavity on the upper cover towards the lower cover and being mounted to said movement member by being passed through at least one channel which extends along the bearing member and is in connection with said mount so as to connect the bearing member to the upper cover such that the upper cover can be moved on the bearing member and so as to prevent disengagement of the upper cover and the bearing member. - at least one upper cover provided with at least one cavity and at least one curved surface contacting the vertebrae; - at least one bearing member comprising at least one outer surface, on which the upper cover can make a rotational motion and which has a structure compatible with and received by the cavity on the upper cover, and at least one mount (1 a) extending in the form of a keel and having an inner surface (1 b) with a partial sphere shape; - at least one movement member, which is provided with at least one outer surface which has a partial sphere shape, which is in contact and compatible with said inner surface of the mount provided in the bearing member, and which is received by this mount (1 a) so as to allow rotational, horizontal and vertical movements with respect to bearing member and move synchronously with the upper cover; - at least one lower cover provided with at least one cavity which is compatible to receive said mount, wherein said mount is fixed to the cavity disposed in the lower cover by means of a tight fit, and at least one outward curved surface on the side thereof making contact with the vertebrae; - at least one connection member extending in the form of a keel from the cavity on the upper cover towards the lower cover and being mounted to said movement member by being passed through at least one channel which extends along the bearing member and is in connection with said mount so as to connect the bearing member to the upper cover such that the upper cover can be moved on the bearing member and so as to prevent disengagement of the upper cover and the bearing member.