Chuna for scoliosis: ① mild scoliosis (under 20°): 30–50% improvement possible, ② moderate (20–40°): may improve but limited, requires bracing combined, ③ severe (over 40°): surgery often necessary, ④ growing children: most effective intervention period, ⑤ adults: pain relief but limited curve correction. Best for functional scoliosis (postural). Combined with corrective exercises. Requires long-term consistent treatment 6+ months.