Table 1 SRS and SOSORT guidelines for bracing

SRS guidelines for bracing

 • AIS: Cobb angle > 25° (25 – 45°), Risser sign 0-3

 • Scheuermann Kyphosis: Cobb angle 55 – 80°, Risser sign 0-3, Scheuermann findings on x-ray (vertebra wedging, Schmorl nodes)

 • Brace weaning: At Risser sign 4, approximately 2 years after menarche for girls

SOSORT guidelines for bracing

 • AIS:

  I. No signs of maturity: Cobb angle >25°

  II. Risser sign 0-3: Cobb angle > 30°, Cobb angle 20 – 29° and progression risk over 60 % (Lonstein formula)

  III. Risser sign 4: Cobb angle > 35°