3Coto S, Mochizuki M, kita T, et al. Transoral jointrelease of the dislocated atlontoaxial joints. Combined with posterior reduetionandfusionfora lateinfantile atlontoaxial rofatory fixation : a cose report[J]. Spine, 1998;23:1485.
4Bohler J, Austria V. Anterior stabilization for acute fractures and non - unions of the dens[J] .J Boue Joint Surg(Am), 1982,64:18.
5Hurlbert R J, Crawford N-R, Choi WG, et al. A biowechanical evaluation of occipitocervical insfrumentation: screw compared with wire fixatiou[J]. J Neurosurg, 1999;90(1 suppl) :84.