Table 2 Comparison of surgical outcomes between PLIF and TLIF

Operation time (minutes)

127.39 ± 21.62

114.48 ± 13.26

0.0004

Blood loss (cm³)

456.96 ± 120.74

366.15 ± 78.49

0.0001

VAS back pre

7.00 ± 1.26

7.25 ± 1.28

0.1717

VAS back post

2.26 ± 1.00

1.77 ± 0.75

0.0044

VAS back change

4.74 ± 1.14

5.40 ± 1.18

0.0037

VAS leg pre

7.39 ± 1.24

7.17 ± 1.36

0.1752

VAS leg post

3.24 ± 1.18

2.98 ± 0.91

0.0824

VAS leg change

4.15 ± 1.44

4.19 ± 1.41

0.4245

ODI pre

51.42 ± 12.45

55.37 ± 13.05

0.0684

ODI post

16.85 ± 4.44

17.67 ± 7.33

0.2581

ODI change

33.98 ± 10.40

37.70 ± 10.61

0.0449

Postoperative complications (number of cases)

5

3

Dural tear

2

1

Nerve root injury (neurologic deficit)

2

0

Wound infection

1

2