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Scheuermann's Kyphosis

Adolescent rigid thoracic or thoracolumbar kyphosis from anterior wedging of three or more consecutive vertebrae, often with Schmorl's nodes and disc abnormalities, requiring observation, bracing, or surgery.

Written by: Saygı Hospital Health Guide Editorial Board
Last updated:

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Ortopedi ve Travmatoloji department. Book Appointment →

What is Scheuermann's Kyphosis?

Pathogenesis involves Schmorl's nodes (intravertebral disc herniation through endplate weakness), end-plate irregularity, decreased anterior vertebral height (wedging), narrowing of disc spaces, vertebral body height changes during growth. Genetic factors implicated (autosomal dominant in some pedigrees with variable penetrance).

Sörensen's diagnostic criteria: anterior vertebral wedging ≥5° in three or more consecutive vertebrae, with associated end-plate irregularity, narrowed disc spaces, Schmorl's nodes. Sagittal spinal alignment shows fixed, rigid (does not correct on hyperextension or supine films) hyperkyphosis >40-45° (normal 20-40°).

Type I (classic, 75-95% of cases): apex at T7-T9; clinically presents with thoracic round-back deformity. Type II (atypical, thoracolumbar, 5-25%): apex at T11-L2; more associated with mechanical low back pain, less prominent visible deformity but more pain.

Symptoms

Adolescent thoracic round-back deformity (cosmetic concern from family or self)
Mid-back pain, often activity-related
Tight hamstrings, lumbar hyperlordosis (compensatory)
Stiffness in spine (does not correct on extension)
Postural fatigue
In type II: lower thoracic-lumbar pain, more functional impact
Severe: pulmonary restriction, neurologic deficits (cord compression — rare, severe curves)
Psychosocial impact (self-image, body confidence)

Risk Factors

Adolescent age (10-15 years onset)
Male sex (2-3:1 male predominance)
Family history (autosomal dominant in some families)
Tall stature, rapid growth
Repetitive flexion activities (controversial)
Sport participation history (debated association)
No clear causation by posture alone

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • Adolescent fixed round-back deformity
  • Mid-back pain in growing adolescent
  • Family history with progressive deformity
  • Lateral spine X-ray showing hyperkyphosis >45° in adolescent
  • Orthopedic spine specialist for assessment and treatment planning

Treatment Methods

01
Diagnostic imaging: standing PA and lateral spine X-rays (full-length cassette), measure Cobb angle of kyphosis, identify wedged vertebrae, Schmorl's nodes; lateral hyperextension/supine views to assess flexibility; MRI for neurologic symptoms or large curves
02
Bone age assessment (Risser sign, Sanders skeletal maturity score) crucial for treatment timing
03
Mild kyphosis (<60°), skeletally immature: observation with serial X-rays every 6 months; physical therapy emphasizing thoracic extension, core strengthening, hip flexor and hamstring flexibility
04
Moderate kyphosis (60-75°), skeletally immature, progressive: thoracolumbosacral orthosis (TLSO, Milwaukee brace) — full-time wear 18-23 hours/day until skeletal maturity; modified TLSO (Boston) for thoracolumbar Type II; bracing aim is to halt progression, modest correction possible (10-20°)
05
Bracing duration: until skeletal maturity (Risser 4-5, peak height velocity passed); typically 2-3 years; weaning protocol gradual
06
Surgical indications: severe kyphosis >75° in skeletally mature with cosmetic/symptomatic concerns, progressive curves >75°, neurologic compromise, severe pain refractory to conservative management, pulmonary compromise
07
Surgical technique: posterior spinal fusion with pedicle screw instrumentation and posterior column osteotomies (Smith-Petersen, pedicle subtraction osteotomy for severe rigid curves); typical fusion T2/T3 to L2/L3 depending on curve; aim for kyphosis correction to 40-50° (avoid over-correction — junctional kyphosis risk)
08
Anterior approach: less commonly used now; anterior release for very rigid curves >100° before posterior fusion
09
Postoperative care: hospitalization 5-7 days, gradual mobilization, brace 6-12 weeks (variable), return to school 6-8 weeks, return to sports 6-12 months, follow-up imaging every 3-6 months first 2 years
10
Surgical complications: junctional kyphosis (proximal junctional kyphosis 20-30%), pseudarthrosis, hardware failure, infection (1-3%), neurologic injury (rare with neuromonitoring), wound complications
11
Pain management: NSAIDs, physical therapy, postural training; epidural injections for refractory pain; surgery if conservative fails
12
Long-term outcomes: bracing achieves modest correction with halting progression; surgical correction maintains correction long-term in most patients; 10-20% require revision over decades; quality of life generally improves
13
Adult Scheuermann's: persistent kyphosis from untreated adolescent disease; pain, postural fatigue, accelerated degenerative changes; conservative management primary, surgery for severe symptoms

Which Department to Visit?

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.