Table 5 Comparison of clinical outcomes between the subsidence group and the nonsubsidence group

Preoperatively

VAS (Back)

5.4 ± 0.8

5.3 ± 0.9

0.615

VAS (Leg)

6.4 ± 1.0

6.1 ± 0.7

0.086

ODI

27.4 ± 4.2

27.3 ± 5.7

0.614

Postoperative at 3 months

VAS (Back)

2.3 ± 0.7

2.0 ± 0.6

0.108

VAS (Leg)

2.9 ± 0.6

2.6 ± 0.5

0.155

ODI

15.4 ± 2.6

14.2 ± 2.8

0.071

Postoperative at 6 months

VAS (Back)

1.9 ± 0.6

1.6 ± 0.7

0.123

VAS (Leg)

2.1 ± 0.6

1.9 ± 0.6

0.206

ODI

13.5 ± 2.3

12.7 ± 2.8

0.228

Last follow-up

VAS (Back)

1.4 ± 0.5

1.3 ± 0.7

0.473

VAS (Leg)

1.9 ± 0.4

1.8 ± 0.6

0.196

ODI

12.2 ± 2.4

12.0 ± 3.0

0.723