title: Efficacy of nighttime brace in preventing progression of idiopathic scoliosis of less than 25°.
abstract: The objective of the present study was to assess, at skeletal maturity, the efficacy of non-operative treatment by isolated nighttime brace in the prevention of progression of progressive idiopathic scoliosis of less than 25°.
  
  
  
  Isolated nighttime brace treatment is effective in the prevention of progression of mild progressive idiopathic scoliosis (Cobb<25°).
  
  
  
  A single-center retrospective study included 142 patients managed by nighttime brace for progressive idiopathic scoliosis with Cobb angle<25°, with assessment at skeletal maturity. Mean Cobb angle at start of treatment was 15.5° (range, 10-25°). Mean values for Cobb angle and sagittal parameters before treatment and at skeletal maturity were compared on Student t-test. Change in Cobb angle over time was also analyzed.
  
  
  
  Mean Cobb angle at skeletal maturity was 16.3°, showing significant increase over baseline (15.5°; P=0.04), although the difference was less than the uncertainty of measurement (±6°). In baseline Risser 0 or 1, mean change in Cobb angle at skeletal maturity (16.2°) was not significant (P=0.1). Cobb angle diminished in 26 cases (18%), increased in 24 (17%) and was unchanged in 92 (65%).
  
  
  
  The present study confirmed the efficacy of non-operative treatment by nighttime brace in mild progressive idiopathic scoliosis (<25°) in a large majority of cases. A nighttime brace thus seems to be an effective option for the treatment of adolescent scoliosis, ensuring a safe curve of around 20°.
  
  
  
  Level IV, retrospective study.
authors.affiliation: Service de chirurgie orthopédique pédiatrique, CHU Grenoble-Alpes, BP 217, 38043 Grenoble cedex 9, France.
authors.forename: G
authors.initials: G
authors.lastname: Lateur
authors.affiliation: Service de chirurgie orthopédique pédiatrique, CHU Grenoble-Alpes, BP 217, 38043 Grenoble cedex 9, France.
authors.forename: P
authors.initials: P
authors.lastname: Grobost
authors.affiliation: Demeure Orthopédie, 1, rue Rosa-Lee-Parks, 38400 Saint-Martin d'Hères, France.
authors.forename: J
authors.initials: J
authors.lastname: Gerbelot
authors.affiliation: Service de chirurgie orthopédique pédiatrique, CHU Grenoble-Alpes, BP 217, 38043 Grenoble cedex 9, France.
authors.forename: A
authors.initials: A
authors.lastname: Eid
authors.affiliation: Service de chirurgie orthopédique pédiatrique, CHU Grenoble-Alpes, BP 217, 38043 Grenoble cedex 9, France.
authors.forename: J
authors.initials: J
authors.lastname: Griffet
authors.affiliation: Service de chirurgie orthopédique pédiatrique, CHU Grenoble-Alpes, BP 217, 38043 Grenoble cedex 9, France. Electronic address: aurelien.courvoisier@gmail.com.
authors.forename: A
authors.initials: A
authors.lastname: Courvoisier
mesh_terms: D000293:Adolescent; D001915:Braces; D002648:Child; D018450:Disease Progression; D005260:Female; D006801:Humans; D008297:Male; D012189:Retrospective Studies; D012600:Scoliosis / Q000628:therapy*; D016896:Treatment Outcome
keywords: Adolescent idiopathic scoliosis; Brace; Nighttime brace