Fig. 2From: Postoperative neck tilt in Lenke 1 and 2 AIS patients after correction surgery: a novel predictive indexA 13-years old AIS patient received correction surgery in August 2013, and she suffered from PNT at 2 years follow-up. The postoperative PTC and CB was 25o and 10 mm, respectively. The PNT Index was 18.5 according to the regression equationBack to article page