Table 3.

Comparison of spine-pelvis sagittal parameters

	OLIF group (n = 36)	TLIF group (n = 36)	P value
L4-5IDH (mm)
Preoperative	8.49 ± 1.76	8.47 ± 1.66	0.458
At the last follow-up	11.72 ± 1.87	9.26 ± 1.19	< 0.001
SL (°)
Preoperative	11.14 ± 4.74	10.57 ± 5.74	0.873
At the last follow-up	14.86 ± 5.58	12.11 ± 3.51	0.041
LL (°)
Preoperative	33.25 ± 5.34	33.67 ± 7.51	0.247
At the last follow-up	42.30 ± 6.27	34.09 ± 9.74	0.035
PI (°)
Preoperative	51.42 ± 9.48	50.66 ± 10.47	0.304
At the last follow-up	52.34 ± 8.90	51.53 ± 7.96	0.356
PT (°)
Preoperative	24.49 ± 6.02	23.43 ± 5.48	0.652
At the last follow-up	16.52 ± 4.21	21.78 ± 3.75	0.042
SS (°)
Preoperative	28.43 ± 5.74	27.67 ± 2.08	0.652
At the last follow-up	36.96 ± 7.17	30.98 ± 5.30	0.039