Table 4.

Postoperative radiological changes in both groups

	Preoperative Mean ± SD	6-month follow-up		Final follow-up
		Mean ± SD	P*	Mean ± SD	P*
Group 1
Coronal Cobb angle (°)	5.0 ± 1.2	5.0 ± 0.9	0.97	5.2 ± 1.2	0.67
Lumbar lordosis (°)	25.1 ± 9.2	27.4 ± 11.0	0.09	27.0 ± 12.0	0.45
Lumbar ROM in flexion-extension (°)	29.6 ± 8.3	32.2 ± 6.8	0.30	26.5 ± 13.8	0.49
Disc height (mm)	6.9 ± 1.9	6.7 ± 1.9	0.06	5.5 ± 1.9	0.04
Foraminal height (mm)	17.2 ± 2.6	16.6 ± 3.3	0.10	15.8 ± 3.4	0.01
Disc wedging (°)	3.5 ± 1.0	3.6 ± 2.6	0.37	4.6 ± 1.0	0.003
Segmental lordotic angle (°)	6.9 ± 4.0	6.8 ± 4.2	0.76	6.9 ± 4.8	0.94
Segmental ROM in flexion-extension (°)	4.7 ± 1.6	4.6 ± 1.3	0.86	4.3 ± 2.2	0.67
Group 2
Coronal Cobb angle (°)	4.8 ± 0.8	3.9 ± 0.7	0.06	4.0 ± 0.7	0.09
Lumbar lordosis (°)	24.7 ± 8.0	32.2 ± 7.0	<0.001	32.0 ± 7.0	<0.001
Lumbar ROM in flexion-extension (°)	34.0 ± 13.0	33.5 ± 14.5	0.72	33.3 ± 14.2	0.48
Disc height (mm)	7.6 ± 1.9	7.4 ± 1.9	0.23	7.3 ± 1.9	0.17
Foraminal height (mm)	16.5 ± 3.1	16.1 ± 2.9	0.42	16.1 ± 3.0	0.34
Disc wedging (°)	1.1 ± 0.1	0.9 ± 0.5	0.36	1.1 ± 0.2	0.91
Segmental lordotic angle (°)	8.3 ± 3.0	8.6 ± 3.0	0.63	9.4 ± 4.1	0.17
Segmental ROM in flexion-extension (°)	5.3 ± 2.3	4.3 ± 2.1	0.08	4.8 ± 3.0	0.51

^*Compared with preoperative data.