Group | VAS for lower back pain | VAS for leg pain | ODI | |||
---|---|---|---|---|---|---|
Before surgery | 3 years after surgery | Before surgery | 3 years after surgery | Before surgery | 3 years after surgery | |
Topping-off | 6.32 ± 1.74 | 1.91 ± 0.73 | 4.78 ± 1.22 | 1.50 ± 0.61 | 48.09 ± 9.61 | 13.65 ± 4.14 |
PLIF | 6.49 ± 1.90 | 2.14 ± 0.91 | 5.11 ± 1.48 | 1.63 ± 0.63 | 50.54 ± 11.21 | 14.22 ± 5.03 |
t | 0.385 | 0.323 | 0.271 | 0.308 | 1.617 | 0.676 |
P | > 0.05 | > 0.05 | > 0.05 | > 0.05 | > 0.05 | > 0.05 |