A method and apparatus for aligning and fixing vertebral bodies is provided. The low profile vertebral alignment/fixation assembly of the current invention comprises a hemispherical headed pedicle screw disposed within a slotted coupling unit designed to allow angular adjustment of the pedicle screw...http://www.google.fr/patents/US6981973?utm_source=gb-gplus-shareBrevet US6981973 - Low profile vertebral alignment and fixation assembly
Low profile vertebral alignment and fixation assembly
