TABLE 2. Values of the Different Parameters Measured at the First Visit and Their P Values.

Parameters	Nonprogressive	Progressive	P
Kyphosis	25	20.6	0.02
Lordosis	47.1	45.6	0.45
2D Cobb angle	21.3	23.4	0.2
3D Cobb angle	30	27.8	0.2
Angle of plane of maximal curvature	51.4	63.5	0.001
Apical vertebral body wedging	2.5	2.5	0.9
Apical disk wedging	5.8	6	0.6
Upper curve disk wedging	3.5	4	0.2
Lower curve disk wedging	6.5	6.1	0.6
Apical intervertebral rotation	5.7	8.1	0.006
Upper curve intervertebral rotation	2.4	2.8	0.2
Lower curve intervertebral rotation	1.6	1.9	0.3
T12–L1 intervertebral rotation	2.1	1.9	0.6
Torsion	3.1	4.5	0.02
T6 width slenderness	56.9	55.3	0.09
T6 depth slenderness	67	65	0.05
T12 width slenderness	54.3	52.5	0.1
T12 depth slenderness	70.3	67.2	0.03
L4 width slenderness	52.1	50.3	0.009
L4 depth slenderness	76.5	73.5	0.007
T1–L5 width slenderness	11.5	11.3	0.05
T1–L5 depth slenderness	15.3	14.9	0.005

3D indicates 3-dimensional; 2D, 2-dimensional.