A posterior fixation system includes a saddle member, an anchoring member, an occipital plate, an occipital rod, and a cross-link connector. The anchoring member anchors the saddle member to bone. The saddle member includes a pair of upright portions that define a channel. The channel is adapted to receive...http://www.google.fr/patents/US6485491?utm_source=gb-gplus-shareBrevet US6485491 - Posterior fixation system
