Table 6.

Degeneration comparison of OLIF group and TLIF group

	OLIF group (n = 36)	TLIF group (n = 36)	P value
Incidence of ADD
L3-4	7/36 (19.44%)	9/36 (25%)	0.778
L3-4 & L5-S1	2/36 (5.56%)	3/36 (8.33%)	1.000
L5-S1	3/36 (8.33%)	6/36 (16.67%)	0.478
Total	12/36 (33.33%)	18/36 (50%)	0.232
Incidence of AJD
L3-4	14/36 (38.89%)	15/36 (41.67%)	0.500
L3-4 & L5-S1	8/36 (22.22%)	8/36 (22.22%)	1.000
L5-S1	8/36 (22.22%)	5/36 (13.89%)	0.541
Total	30/36 (83.33%)	28/36 (77.78%)	0.767
Incidence of ASDeg
L3-4	4/36 (11.11%)	6/36 (16.67%)	0.735
L3-4 & L5-S1	1/36 (2.78%)	1/36 (2.78%)	1.000
L5-S1	2/36 (5.56%)	3/36 (8.33%)	1.000
Total	7/36 (19.44%)	10/36 (27.78%)	0.580