Ohrt-Nissen S, et al. - Authors gauged the preoperative predictors for postoperative shoulder imbalance (PSI) after corrective surgery of adolescent idiopathic scoliosis (AIS) and using the fulcrum-bending radiograph to evaluate the flexibility. A significant predictor for PSI was a low preoperative curve flexibility. It was concluded that the surgical strategy should consider proximal fusion in presence of low-flexibility MT curves and consider less aggressive MT curve correction. The main priority during intraoperative correction should be achieving a level T1 which may require fusion of the PT curve.