Pediatric Scoliosis
Lateral spinal curvature developing in children and adolescents
ICD-10: M41.00 · congenital condition
Pediatric scoliosis refers to lateral curvature of the spine (Cobb angle ≥10°) that develops during childhood or adolescence. Adolescent idiopathic scoliosis (AIS) — the most common form — occurs in children aged 10 through skeletal maturity, affects 2–3% of adolescents, and is four times more likely to require treatment in girls. Early-onset scoliosis (EOS) refers to any scoliotic deformity before age 10, which is particularly problematic because curves developing before thoracic spine maturity can impair lung growth and lead to thoracic insufficiency syndrome with respiratory failure. Scoliosis curves are three-dimensional deformities: the lateral (coronal) curve is accompanied by vertebral rotation (producing the rib prominence and trunk asymmetry visible on Adams forward bend test) and sagittal plane changes. Cobb angle — measured on standing PA radiograph from the most tilted vertebrae — is the primary metric for monitoring and treatment decisions. Curves under 20° are observed; curves 20–40° in growing patients are braced (Risser 0–2); curves over 45–50° typically warrant surgical correction. The goal of treatment in AIS is to prevent curve progression to adulthood levels that cause cosmetic deformity, pain, and — in very severe cases — cardiopulmonary compromise. Most patients with AIS who complete bracing or surgical treatment maintain excellent long-term functional outcomes.
Anatomy & Pathology
The normal spine, viewed from behind, is perfectly straight. In scoliosis, the spine curves laterally and the vertebrae rotate around their vertical axis — creating the characteristic "rib hump" visible when the patient bends forward (Adam's forward bend test). Thoracic curves rotate the attached ribs, producing asymmetry of the thorax and back. Lumbar curves rotate the paravertebral muscles, creating a lumbar prominence.
Symptoms
- Visible asymmetry: one shoulder higher, one hip more prominent
- Rib hump or paravertebral prominence on Adams forward bend test
- Waist asymmetry or unequal arm-side distances
- Clothes fitting unequally (one pant leg appearing longer)
- Back pain — present in 20–25% of AIS patients (more common in adult scoliosis)
- Reduced lung capacity and exertional dyspnea in severe (>70°) curves
- Incidental finding on chest X-ray or school screening
Causes & Risk Factors
- Idiopathic — genetic multifactorial etiology with strong familial aggregation (10-fold increased risk in first-degree relatives)
- Vertebral growth asymmetry during the adolescent growth spurt as the primary period of progression
- Neuromuscular conditions: cerebral palsy, muscular dystrophy (non-idiopathic causes)
- Congenital vertebral malformations — hemivertebra, unilateral bar
- Intraspinal anomalies (tethered cord, syrinx) — must be excluded with MRI in atypical presentations
Treatment Options
Conservative
- Observation with Cobb angle measurement every 4–6 months during growth for curves under 20–25°
- TLSO bracing (Boston, Rigo Chêneau, or nighttime Charleston bending brace) for curves 25–45° in skeletally immature patients — reduces progression and surgery rate by ~70% when worn ≥13 hours/day
- Scoliosis-specific exercises (Schroth method) — adjunct to bracing to improve curve correction and compliance
Surgical
- Posterior spinal fusion with pedicle screw and rod instrumentation for curves ≥45–50° in AIS — corrects deformity, prevents progression, and achieves long-term stability
- Anterior spinal fusion (thoracoscopic or open) for selected thoracolumbar/lumbar curves allowing shorter fusion segments
- Growing rod constructs (magnetically controlled growing rods — MCGR) for early-onset scoliosis to allow lung and thoracic growth while controlling curve
When to see a spine specialist
Children identified with scoliosis at school screening or by parents should be evaluated by a pediatrician and referred to a pediatric orthopedic or spine specialist for Cobb angle measurement. Referral is especially urgent for children under 10 with any curve, and for adolescents with curves progressing rapidly, atypical patterns (left thoracic curve in an adolescent), or associated neurological signs requiring MRI.
Specialists Who Treat Pediatric Scoliosis
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Search spine specialists →Frequently Asked Questions
Does bracing for scoliosis actually work?
Yes, for appropriately selected patients. The BrAIST trial (NEJM 2013) — the first high-quality randomized trial for scoliosis bracing — showed that bracing with ≥13 hours/day wear time achieved treatment success (curve <50°) in 72% of patients versus 48% with observation alone. The dose-response relationship is strong: patients achieving ≥13 hours/day wear time have 90–93% success rates. Bracing is most effective for curves 25–40° in patients with at least two years of remaining growth.
What is the Cobb angle and at what measurement is surgery needed?
The Cobb angle is measured on a standing anteroposterior (PA) spine X-ray: lines are drawn along the end plates of the most tilted vertebrae at the top and bottom of the curve, and the angle between perpendiculars to those lines is the Cobb angle. Curves under 20° are monitored; 20–45° may be braced in growing patients; curves over 45–50° in growing patients or over 50° at skeletal maturity are typically recommended for surgical fusion, as they are likely to continue progressing into adulthood.
What is spinal fusion surgery for scoliosis like, and are there long-term limitations?
Posterior spinal fusion uses pedicle screws and rods to correct and stabilize the scoliotic curve. Most AIS surgeries are performed from the back through a posterior incision, and patients typically are ambulatory by the second day after surgery and discharged in 3–5 days. Return to school occurs at 4–6 weeks; sports at 6–12 months. The fused segment permanently loses flexibility, but above and below the fusion the spine retains normal motion. Long-term studies show excellent quality of life, low back pain rates, and functional outcomes comparable to non-scoliotic peers after fusion.