A supplemental spine fixation device and method is used in association with a primary spine fixation device. The supplemental spine fixation device includes a guide and spacer for distracting apart adjacent spinous processes and the device has hook members which hook about the first and second spinous...http://www.google.fr/patents/US7621939?utm_source=gb-gplus-shareBrevet US7621939 - Supplemental spine fixation device and method
