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Examples of curves with different Phases. 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. A: Isophasic; B: Anisophasic. For clinical and 3 DEMO complete data of these patients see Appendix [see Additional file 1].
