To evaluate the biomechanical differences of pure or combined application of severalposterior atlantoaxial fixation techniques. Methods: The torques needed for five-degree rotationwere measured in seven preserved atlantoaxial complex specimens after these specimens werefi-cated with transarticular screw fixation(Magerl), Magerl plus Gallie wiring, Magerl plus Brookswiring, pure Gallie wiring, pure Brooks wiring, and pure Halifax interlaminar clamping,respectively. Results: The torque for Mager were 6.59 1.34Nm, which were significant greater thanthe torque for any other pure fixation techniques(p<0.0l), but less than the torque for Magerl plusBrooks wiring(p<0.01). No significant difference was found between the torque for Magerl and forMagerl plus Gallie wiring. The torque for Gallie wiring were the least among the posterioratlantoaxial fixation techniques studied. Conclusions: The Magerl technique is superior to othercommon posterior atlantoaxial fixation technique in anti-rota...更多tional capacity. It is not necessaryadding Gallie wiring to Magerl technique. 还原