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Rigshospitalet - a part of Copenhagen University Hospital
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Conservative treatment of main thoracic adolescent idiopathic scoliosis: Full-time or nighttime bracing?

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PURPOSE: To compare treatment efficacy between the Boston full-time brace and the Providence part-time brace in main thoracic adolescent idiopathic scoliosis (AIS).

METHODS: Patients were treated with either the Boston brace (n = 37) or the Providence brace (n = 40). Inclusion criteria were Risser grade ≤2, major curve between 25° and 40° with the apex of the curve between T7 and T11 vertebrae. Two-year follow-up was available in all patients unless brace treatment had reached endpoint. The primary outcome measure was main curve progression to ≥45°.

RESULTS: Median age was 12.6 years and median treatment length at follow-up was 25 months (interquartile range (IQR): 18-32)) with no difference between the groups (p ≥ 0.116). Initial median main Cobb angle was 29° (IQR: 27-33) and 36° (IQR: 33-38) in the Boston and Providence groups, respectively (p < 0.001). At follow-up, 13 patients (35%) had progressed to ≥45° in the Boston group versus 16 patients (40%) in the Providence group (p = 0.838). Twenty-three patients (62%) had progressed by more than 5° in the Boston group versus 22 patients (55%) in the Providence group (p = 0.685). The secondary thoracolumbar/lumbar curve progressed by more than 5° in 14 (38%) and 18 (45%) in the Boston and Providence groups, respectively (p = 0.548).

CONCLUSIONS: Despite a larger initial curve size in the Providence group, progression of more than 5° or to surgical indication area was similar in the Boston group. Our results indicate that nighttime bracing is a viable alternative to full-time bracing also in main thoracic AIS.

Original languageEnglish
JournalJournal of orthopaedic surgery (Hong Kong)
Volume27
Issue number2
Pages (from-to)e2309499019860017
ISSN1022-5536
DOIs
Publication statusPublished - 10 Jul 2019

ID: 59372057