Classification

Type 1

  • Main thoracic: Main thoracic curve is the major curve; proximal thoracic and thoracolumbar/lumbar curves are minor nonstructural curves

Type 2

  • Double thoracic: Main thoracic curve is the major curve; proximal thoracic curve is minor and structural; thoracolumbar/lumbar curve is minor and nonstructural

Type 3

  • Double major: Main thoracic and thoracolumbar/lumbar curves are structural; proximal thoracic curve is nonstructural
  • Main thoracic curve is the major curve and is greater than, equal to, or no more than 5 degrees less than the Cobb measurement of the thoracolumbar/lumbar curve

Type 4

  • Triple major: Proximal thoracic, main thoracic, and thoracolumbar/lumbar curves are structural; either of the two latter curves may be the major curve

Type 5

  • Thoracolumbar/lumbar: Thoracolumbar/lumbar curve is the major curve and is structural; proximal thoracic and main thoracic curves are nonstructural

Type 6

  • Thoracolumbar/lumbar-main thoracic: Thoracolumbar/lumbar curve is the major curve and measures at least 5 degrees more than the main thoracic curve, which is structural; proximal thoracic curve is nonstructural

Explanation

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Figures

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Reference(s)

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