Mazor X Stealth Versus O-arm Navigation for Pedicle Screw Insertion

Inclusion Criteria: * adult patients * who require pedicle screw insertion for vertebral posterior stabilization Exclusion Criteria: * children * participants incapable of judgment * participants under tutelage * vertebral fusion indication without pedicle screw implantation * refusal to participate * data missing for radiation exposure calculation * unstable vertebral fracture requiring urgent fixation * pregnancy * refusal to participate