BrAIST→↑brace time=↓surg (dose-response). ≥70% in-brace corr=best. Night-only ok for <25° in young pts. Contra: T-apex>T7-8, BMI↑. CAD/CAM TLSO=Cobb↓, preferred. iButton tracks 90d wear. Wean @Sanders 7B (↓1cm/y), Collagen X<3ng/dL. <40°T=1.5-2y f/u, >40°=multi-y.