1.The development of deformity cannot be controlled by brace treatment, and the degree of scoliosis continues to increase. 2.Pulmonary dysfunction as well as trunk asymmetry in adolescent-type scoliosis with severe deformity requiring orthopedic treatment. 3.Patients with pain or with neurological symptoms in older patients who cannot be controlled by conservative treatment. 4.Adolescent scoliosis of 45 degrees or more. 5.Cobb angle of 40 degrees, but with severe anterior chest convexity and obvious rib augmentation.