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MATERIAL AND METHODS We prospectively investigated 41 consecutive patients (mean age, 64 years; range, 22-81 years) who underwent corrective surgery for ASD from March 2011 to September 2012. The mean postoperative follow-up period was 26 (range, 15 33) months. Gait was analyzed before and 1 year after surgery, and the 4m walking status was recorded with a video camera. We measured the angle between the line connecting the greater trochanter and the pinna and a plumb line on the side during gait (gait-trunk tilt angle). We investigated the gait-trunk tilt angle (GTA) before and after corrective surgery. Patients were divided into two groups based on the postoperative GTA: Group A (28 patients; 0 10°) and Group B (13 patients, u003e10°). Differences in sagittal vertical axis (SVA), lumbar lordosis (LL), and pelvic tilt (PT) were examined in both groups.

Gait analysis after corrective surgery for adult spinal deformity - good sagittal balance with improved lumber lordosis is important