Yang Y, et al. - In this investigation, researchers investigated the risk factors associated with postoperative shoulder imbalance (PSI) in adolescent idiopathic scoliosis (AIS) and determined if PSI could be predicted. From January 2012 to January 2015, they reviewed medical records of AIS patients receiving correction surgery. Adjusted logistic regression analysis exhibited that the primary contributors to PSI in patients with AIS were postoperative apical vertebral translation (AVT) of proximal thoracic curve (PTC) and adding-on angle. The cutoff point for the PSI index in predicting the development of PSI was 15 according to the receiver operating characteristic curve. In this study involving 114 AIS patients, adequate correction of AVT of PTC and prevention of add-on to prevent PSI was recommended.