Table 5 Clinical outcomes of UBED and PEID in the treatment of high-grade migrated LDH

VAS back

 Preoperative

5.6 ± 1.1

5.5 ± 1.2

 1 day after operation

2.4 ± 0.7

2.4 ± 0.5

 1 month after operation

2.3 ± 0.7

2.1 ± 0.7

 6 months after operation

1.9 ± 1.0

1.6 ± 0.5

VAS leg

 Preoperative

6.8 ± 0.9

6.6 ± 0.8

 1 day after operation

2.6 ± 0.5

2.7 ± 1.1

 1 month after operation

2.3 ± 0.7

2.2 ± 0.9

 6 months after operation

1.5 ± 0.5

2.0 ± 1.0

ODI

 Preoperative

52.3 ± 7.6

48.3 ± 6.8

 1 day after operation

21.8 ± 3.5

18.6 ± 4.5

 1 month after operation

7.5 ± 2.3

8.9 ± 1.7

 6 months after operation

6.8 ± 2.1

5.9 ± 2.5

MacNab

(excellent/good/fair/poor)

5/1/1/1

8/4/5/1

 Excellent/good rate

75.0%

66.7%

Complications, n (%)

0(/)

2(3.1%)