#$%^&*AU2012244228A120121115.pdf#####43 ABSTRACT An implant device for flexibly linking at least two vertebra of a spine of a patient dynamic fixation device is provided. The device allows the vertebrae to which it is attached to move in flexion within the normal physiological limits of motion, while also providing structural support that limits the amount of translation motion beyond normal physiological limits. The present invention includes a flexible portion and two ends that are adapted for connection to pedicle screws. In at least one embodiment of the present invention, the normal axis of rotation of the vertebrae is substantially duplicated by the dynamic fixation device. The flexible portion of the implant device can include a flexible anteriorposterior segment, an anterior-posterior segment bounded by one or more zones with cuts in the rod portions, a flexible accordion-like segment, and/or a hinge portion. duwm A0123045545-v1 12030390321/27 13b 18b I ----Superior 20 136 16 138 141 144a 144b 0 - 1404142b 14 Inferior 13b 16a Fi .03 L rig-136 18a 11 140144b r18b3 Fig. 13b*
