Abstract: The device (9) comprises vertebral elements (10, 20, 10?, 20?) adapted to be fixed to the same lateral side of the bodies of at least two adjacent vertebrae (1, 2), the elements being associated in pairs that are provided to be associated with the left and right sides of the vertebrae. In order to guide the vertebrae effectively and stably, in order, in use, to reproduce an articulating intervertebral joint, the two elements of each pair delimit respective surfaces (15, 25, 15?, 25?) for the relative guiding of those elements, which surfaces are adapted, when the elements are implanted on their corresponding vertebra, to extend generally along the same lateral side of the body of the vertebrae and to rest and slide one against the other in such a manner that the surfaces define a center of rotation (C) about which the two elements are able to turn one relative to the other.

Abstract: The device (9) comprises vertebral elements (10, 20, 10?, 20?) adapted to be fixed to the same lateral side of the bodies of at least two adjacent vertebrae (1, 2), the elements being associated in pairs that are provided to be associated with the left and right sides of the vertebrae. In order to guide the vertebrae effectively and stably, in order, in use, to reproduce an articulating intervertebral joint, the two elements of each pair delimit respective surfaces (15, 25, 15?, 25?) for the relative guiding of those elements, which surfaces are adapted, when the elements are implanted on their corresponding vertebra, to extend generally along the same lateral side of the body of the vertebrae and to rest and slide one against the other in such a manner that the surfaces define a centre of rotation (C) about which the two elements are able to turn one relative to the other.

Abstract: The device (4) comprises two vertebral elements (10, 20) each adapted to be fixed to the same lateral side of the body of at least two adjacent vertebrae (1, 2). In order to guide the vertebrae effectively and stably in order to reproduce an articulating intervertebral joint, the elements delimit respective surfaces (14A, 26A) for the relative guiding of the two elements, which surfaces are so adapted that, when the elements are implanted on the corresponding vertebrae, they cooperate with one another by complementarity of forms, in such a manner that they define an axis of rotation (X-X) about which the two elements are able to tilt one relative to the other and which extends both according to a direction substantially mediolateral to the spine and in the intervertebral disk space (7) separating the two adjacent vertebrae.