Fig. 1From: Use of iliac screw associated with more correction of lumbar lordosis than S2-alar-iliac screw for adult spinal deformityA 78-year-old female patient from IS group. The SVA, PT, and LL were 337.7 mm, 40.4° and 36.4° preoperatively (A and B) and changed to 12 mm, 18.5°, and − 49.9° after surgery (C and D). IS indicates iliac screwBack to article page