 The investigators will recruit AIS patients managed at the Duchess of Kent Childrens Hospital DKCH in Hong Kong. As there is no definition for brace weaning, we adopt the protocol that our center has been using. Hence the investigators will be comparing two protocols: 1 brace wearing time shortened to night wearing for 6 more months before stopping bracing altogether or 2 immediate brace weaning on the day of patient recruitment. All patients will be recruited on the day of clinic consultation where the decision for brace weaning is made. Those with underarm Boston bracing are included in the study. All subjects are followed-up longitudinally up to 1 year after brace weaning has been issued. Hence this includes two clinic visits with one at 6 months to complete the gradual brace weaning protocol and another at 1 year to observe for any delayed changes to the overall curvature and balance including loss of truncal balance and Cobb angle deterioration. For curve progression after brace weaning, the highest risk occurs within 6 months of brace weaning. Hence, 1-year collection of data is adequate for seeing differences between the two groups. This does not deviate significantly from our usual care as all AIS subjects are usually followed-up at 6-monthly intervals and thus this duration of follow-up is strictly adherent to and standardized. 