Table 1 Patient characteristics of the two groups(mean ± SD; P < 0.05 was identified with significant difference; n = number)

Sex

(male/female)

15/11

16/13

> 0.05

Age (year)

46.19 ± 11.01

43.69 ± 10.12

> 0.05

BMI (kg/m²)

33.03 ± 2.06

23.07 ± 1.34

< 0.001

Smoking history

(Y/N)

8/26 10/29 >0.05

Cardiovascular comorbidities

(Y/N)

3/26

2/29

> 0.05

Diabetes

(Y/N)

5/26

6/29

> 0.05

VAS-Back, preoperative

6.65 ± 1.57

6.59 ± 1.45

> 0.05

VAS-Leg, preoperative

8.38 ± 0.94

8.38 ± 0.86

0.983

The segment of the lumbar disc herniation (n)

L3/4

2/26(8%)

3/29(10%)

L4/5

18/26(69%)

19/29(66%)

L5/S1

6/26(23%)

7/29(24%)

ODI, preoperative

67.16 ± 9.25

68.10 ± 9.27