Table 2.

Variable and measured data of the patients who were chosen from the study group to find “k” value.

Number	Age	Gender	Curve type	Fusion level	N	Preop. Cobb (°)	Preop. AVT (mm)	h1 (mm)	Postop. Cobb (°)	Postop. AVT (mm)	h2 (mm)	H1 (mm)	PΔH (mm)	Stokes1 (mm)	Simplified PΔH  (mm)	ΔH (mm)	ΔH-Stokes1 (mm)	Intervert. disc lengthening (“k” value)
(5)	14	M	1A	T3–L1	11	43.7	51.4	38.15	6.5	10.1	0.02	38.13	34.37	16.68	34.79	30	13.32	1.21
(9)	13	F	5C	T11–L4	6	37.6	49.6	24.39	0.6	8.8	−3.38	27.77	27.55	12.52	24.59	30	17.48	2.91
(13)	20	F	1A	T4–T11	8	38.0	38.8	26.77	5.4	5.9	−0.07	26.84	24.22	12.74	24.48	25	12.26	1.53
(19)	18	F	1B	T6-L4	11	45.3	53.0	39.06	6.2	0.0	0.00	39.06	35.59	17.87	35.99	35	17.13	1.56
(22)	21	F	1C	T4–T11	8	42.8	24.0	24.27	3.7	1.1	0.00	24.27	22.68	16.02	22.87	40	23.98	3.00
(23)	14	F	1B	T5–T11	7	39.6	38.0	24.66	6.5	0.0	0.00	24.66	22.02	13.78	22.33	30	16.22	2.32
(24)	20	F	1C	T4-L3	12	46.2	10.1	30.29	5.0	0.0	0.00	30.29	27.30	18.61	27.38	35	16.39	1.37
(28)	15	F	5C	T5-L5	13	52.1	53.2	45.90	0.0	0.0	0.00	45.90	45.90	23.56	46.26	35	11.44	0.88
(30)	12	M	1A	T4–T11	8	42.7	20.3	23.36	5.0	0.0	0.00	23.36	21.21	15.98	21.37	35	19.02	2.38
(35)	14	F	5C	T9-L4	8	50.3	45.9	31.69	0.0	0.0	0.00	31.69	31.69	21.91	32.01	40	18.09	2.26
(36)	24	F	1A	T5-L3	11	40.3	47.1	36.11	0.0	0.0	0.00	36.11	36.11	14.25	36.49	40	25.75	2.34
Mean	16.8				9.4	43.5	39.2	31.33	3.5	2.4	−0.31	31.64	29.88	16.72	29.87	34.09	17.37	2.0