Fig. 2

an adolescent girl, with major thoracic IS at diagnosis (Cobb angle: 30°, curve apex: T9, SSMS 3, DRU(R) 7 and DRU (U) 5) (a, e). Full time Milwaukee brace was prescribed, yet the major Cobb angle kept being slowly progressive (b). The timing and magnitude of PHV was 8.6 cm/y and 12.2 years old, respectively (c). And the corresponding staging of SSMS, DRU (R) and DRU (U) were 4, 8 and 6, respectively (f). The AV accelerated rapidly and by PHV it reached 10.9°/y, resulting in continuous curve deterioration. By age 16.2 yrs., the thoracic curve grew to 60° (d) and corrective surgery was recommended