Yaszay B, et al. - A sum of 262 individuals were estimated to analyze the alterations in pulmonary function tests (PFT) at 5 years postoperatively in subjects with adolescent idiopathic scoliosis (AIS) and also to ascertain the impact of such differences after 2 years. They observed 42% normal, 41% with mild impairment, and 17% with a moderate-severe impairment at 5 years. They recorded a decline in percentage predicted forced vital capacity (FVC) with stable forced expiratory volume (FEV). They found a decrease between pre-operative PFT and 5 years postoperative PFT (FEV: − 10% open, − 6% thoracoscopic; FVC: − 13% open, − 8% thoracoscopic).