Yamato Y, Hasegawa T, Yoshida G, et al. - The present study was conducted to ascertain the effect of planned two-stage surgery using lateral lumbar interbody fusion (LLIF) on the perioperative complication rate following corrective fusion surgery in patients with kyphoscoliosis. Researchers classified consecutive patients with degenerative scoliosis who had undergone corrective fusion into a control group that had undergone single-stage posterior-only surgery and a group that underwent planned two-staged surgery with LLIF and posterior corrective fusion. Spinopelvic parameters and patient-reported outcome measurements were also assessed. A total of 138 patients of mean age 69.8 (range, 50–84) years who met the study inclusion criteria were enrolled in this study. It was shown that the complication rate for planned two-stage surgery was similar to that of previous posterior-only single-stage surgery. The results showed that the early reoperation was less common, and the degree of spinal correction and clinical outcomes were significantly better after two-stage surgery.