C-arm-Free Circumferential Minimally Invasive Surgery for Adult Spinal Deformity: A technical noteMasato Tanaka; Yoshihiro Fujiwara; Koji Uotani; Praful Maste; Taro YamauchiSCIENCEDIRECT-摘要-关键词adult spinal deformity back pain C-arm fluoroscopy intraoperative radiation