Halo vest fixation effectively maintains cervical alignment through intraoperative repositioning in patients with cervical spine instability oleh Takafumi Arita, Osamu Kawano, Hiroaki Sakai, Yuichiro Morishita, Muneaki Masuda, Tetsuo Hayashi, Kensuke Kubota, Takeshi Maeda, Yasuharu Nakashima, Kazuya Yokota