Operative Time is an Independent Risk Factor for Complications in Adult Spinal Deformity Surgery

Demographic information was collected at baseline.Healthrelated quality-of-life outcomes, including the Oswestry Disability Index (ODI), back and leg pain numerical rating scale, and Scoliosis Research Society Patient Questionnaire (SRS-22r) were collected at all time points (baseline, six weeks, one year, and two years).Patient satisfaction was analyzed using the SRS-22r patient satisfaction domain.Radiographic parameters included sagittal vertical axis (SVA), pelvic tilt (PT), Pelvic Incidence (PI), Lumbar Lordosis (LL), and pelvic incidence minus lumbar lordosis mismatch (PI-LL).Total levels instrumented, operative time (minutes between incision and closing), length of hospital stay (days), and presence of threecolumn osteotomies were also assessed.Patient surgical date, complications, reoperation dates, and health-related quality-of-life outcomes were collected.Reoperation