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Table 4 Division of studied population according to the classificatory 3-DEMO parameter "Phase".

From: Three-dimensional easy morphological (3-DEMO) classification of scoliosis, part I

Classification

Limits

Scoliosis

Hyperkyphosis

Scoliosis & Hyperkyphosis

Normals

Anisophasic

Phase > 8.1

58.2%

0.0%

50.0%

3.6%

Isophasic

Phase < 8.1

41.8%

100.0%

50.0%

96.4%

Chi-square test

P < 0.05

  1. The classificatory parameter defined Phase is obtained dividing the spinal area for the diagonal of the minimum rectangle in which the Top View is inscribable; in practice, Phase is the Top View graphical representation of the 3D spatial evolution of the curve.