Table 1. Characteristics of enrolled discogenic LBP and control group.

Characteristics	Discogenic LBP (n = 60)	Control group (n = 60)	Value of χ2 or t	P
Age of the patients(years)	50.58 ± 11.02	50.25 ± 12.09	0.25	0.563
Gender
Male	33 (55.0%)	35 (58.4%)
Female	27 (45.0%)	25 (41.6%)	0.14	0.713
Disc position
L3-4	6 (10.0%)	8 (13.3%)	0.32	0.570
L4-5	37 (56.7%)	39 (65%)	0.14	0.705
L5-S1	17 (28.3%)	13 (21.7%)	0.71	0.399
Total			0.87	0.643
Cobb angle of Lumbar vertebra (T12-S1) (°)	3.73 ± 2.24	2.93 ± 1.91	2.11	0.040
Lumbar lordosis angle (L1-S1) (°)	45.3 ± 8.6	43.6 ±7.4	1.20	0.100
Lumbar stability (lesion segment)
Angular motion (°)	19.09 ± 3.44	10.33 ± 3.02	14.85	0.000
Lumbar mobility (mm)	4.94 ± 3.18	2.19 ± 2.35	5.35	0.000
Height of the disc (mm)
Anterior	12.68 ± 1.99	15.67 ± 2.63	−4.96	0.022
Middle	10.88 ± 2.22	13.22 ± 1.70	6.19	0.016
Posterior	9.38 ± 2.13	10.78 ± 1.29	−4.23	0.028
Spinal canal dimensions(mm)
Sagittal diameter	13.98 ± 2.25	14.09 ± 3.33	−2.01	0.054
Tranverse diameter	23.26 ± 3.77	24.51 ± 3.20	−1.96	0.063
VAS score	7.6 ± 2.3	7.2 ± 1.6	3.2	0.143
Modic change
Negative	5 (8.3%)	55 (91.7%)	33.75
I	17 (28.3%)	5 (8.3%)	22.34
II	31 (51.7%)	0 (0%)	51.79
III	7 (11.7%)	0 (0%)	7.43
Total			62.02	0.000
HIZ
Positive	31(51.7%)	7 (11.7%)
Negative	29(48.3%)	53 (88.3%)	22.18	0.000