The present invention relates to a device for the stabilization of the spinecomprising at least two pedicle screws and at least one interjacent linkingmember. The present invention further relates to pedicle screws which combinethe advantages of a monoaxial screw with those of a polyaxial screw byavoidingthe drawbacks of these screw types. This objective is achieved due to the factthat the screw head is supported on the screw shank such that it cannot bemovedfor providing an optimal reducibility of the vertebrae, wherein a movable ballelement is present in the screw head, which facilitates the introduction ofthelinking member and fixates the same once the introduction has been effected.
