8Wood KB,Bohn D,Mehbod A. Anterior versus posterior treatment of stable thoracolumbar burst fractures without neurologic deficit:a prospective,randomized study [J].J Spinal Disord Tech,2005,18(Suppl):15-23.
9Laine T,Lund T,Ylikoski M,et al. Accuracy of pedicle screw insertion with and without computer assistance:a prospective randomized controlled clinical trial of 100 consecutive patients [J].Eur Spine,2000,9(3) :235-240.