All

Wiltse group

Traditional group

p value

Surgery time

95(65-145)

76.5(65-110)

120(90-145)

< 0.001

Bleeding volume

140(50-300）

90(50-180)

190(140-300)

< 0.001

Incision length

11.3(7.8-18.5)

9.4(7.8-11.3)

16.5(14.0-18.5)

< 0.001

3 days ODI (Yes)

25.4 ± 5.2

21.6 ± 4.0

29.3 ± 2.8

< 0.001

6 months ODI

11(5-18)

9(5-15)

13(8-18)

< 0.001

12 months ODI

6(2-10)

5(2-8)

6(3-10)

< 0.001

Pre-operative VAS

8(6-10)

8(6-10)

8(7-10)

0.568

3 days VAS

3(2-5）

2.6(2-4)

3.8(2-5)

< 0.001

6 months VAS

1(0-3)

1(0-3)

2(1-3)

< 0.001

12 months VAS

1(0-2)

0(0-1)

1(1-2)

< 0.001

Post-operative drainage (Yes)

139.1 ± 56.7

97.4 ± 34.7

181.7 ± 41.0

< 0.001

Postoperative drainage removal

3(1-6)

2(1-4)

4(2-6)

< 0.001

Postoperative hospital stay

5(3-8)

4(3-6)

6(3-8)

< 0.001