A pedicle screw assembly is provided that includes a pedicle screw and a preloaded set screw. The set screw is preloaded in a threaded, central aperture formed in the head region of the pedicle screw. An interference is advantageously formed on the set screw to prevent dislodgement of the set screw,...http://www.google.fr/patents/US20050177164?utm_source=gb-gplus-shareBrevet US20050177164 - Pedicle screw devices, systems and methods having a preloaded set screw
Pedicle screw devices, systems and methods having a preloaded set screw
