ArticleEuropean spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society2026
Comparison of brace treatment outcomes for patients with adolescent idiopathic scoliosis by degree of bone maturity: A study using the distal radius and ulna classification.
Article in European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeThis retrospective cohort study aimed to compare brace treatment outcomes in patients with adolescent idiopathic scoliosis (AIS) according to skeletal maturity using the distal radius and ulna (DRU) classification. The effectiveness of brace treatment in preventing curve progression across different stages of skeletal maturity, as defined by the DRU classification, remains unclear.
methodsThe study reviewed 69 patients with AIS treated with an underarm brace between 2014 and 2022 and followed them until skeletal maturity. Based on the DRU classification, the patients were stratified into three progression risk groups: high-risk (R6, R7), moderate-risk (R8), and low-risk (R9). Curve progression was defined as a ≥ 6° increase by skeletal maturity or surgery before maturity; progression requiring surgery was defined as a curve ≥ 50° at maturity or the need for spinal fusion. Prevention and surgery-requiring progression rates were compared among the three groups.
resultsSixty-nine patients with AIS were included: 29, 28, and 12 in the high-, moderate-, and low-risk groups, respectively. Overall progression prevention rates in the high-, moderate-, and low-risk groups were 34.3%, 80%, and 100%, respectively (p < 0.001). The high-risk group differed significantly from the other groups. Surgical-threshold prevention rates were 70.4%, 80.0%, and 100% in the high-, moderate-, and low-risk groups, respectively (p = 0.122). In the high-risk group, patients with Cobb angles ≥ 30° more frequently reached the surgical threshold.
conclusionThese findings offer patients and families valuable guidance regarding curve control with brace treatments.
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