Comparison of In-Brace Correction, Compliance, and One-Year Radiographic Outcomes Between Boston and Scoliosis Brace

Bracing is the primary conservative treatment for Adolescent Idiopathic Scoliosis (AIS), aiming to arrest curve progression. Therapeutic success relies on initial in-brace correction and patient compliance. This study compares the symmetric Boston brace and the asymmetric 3D Scoliosis Brace (SB) regarding immediate correction, compliance, and one-year outcomes in Cobb and Raimondi angles. A retrospective observational study involved 135 adolescents (Boston: n=54, SB: n=81) with AIS (Cobb 20-45°). Outcomes included percentage of in-brace correction, compliance (wear time %), and changes in Cobb and Raimondi angles at 1-year follow-up. The SB group achieved significantly higher initial in-brace correction (47.8% ± 14.4) compared to the Boston group (39.0% ± 13.5, p<0.001). Compliance was also significantly higher in the SB group (89.6%) versus the Boston group (72.9%, p<0.001). At one year, both groups improved significantly, but the SB group showed superior Cobb angle reduction (from 27.06° to 22.44°) compared to the Boston group (from 26.17° to 24.02°, p=0.007). Both braces effectively maintained rotational stability, preventing clinically significant progression. The Scoliosis Brace demonstrated superior immediate correction and higher patient compliance, contributing to better Cobb angle reduction at one year. Both designs successfully stabilized the rotational component. These findings support the efficacy of asymmetric 3D CAD/CAM designs in optimizing AIS treatment outcomes.