AB152. Two stage anterior-posterior fusion for double major adolescent idiopathic scoliosis (AIS): saving lumbar levels with improved derotation of the lowest instrumented vertebra - McDonnell, Jake Michael; Liu, Darren; Ahern, Daniel Patrick; Yu, Haiming; Benton, Adam; Berridge, Anna; Gibson, Alexander; Butler, Joseph; Molloy, Sean (Mesentery and Peritoneum, 2020)