Group | Visual Analog Scale score | Oswestry Disability Index | ||
---|---|---|---|---|
 | pre-OP | LF | pre-OP | LF |
A | 6.5 ± 1.0 | 1.8 ± 0.7 | 38.9 ± 6.2 | 24.8 ± 8.0 |
B | 6.7 ± 1.1 | 1.2 ± 0.6 | 37.8 ± 5.9 | 20.6 ± 7.7 |
 | P = 0.47 | P < 0.01 | P = 0.45 | P = 0.036 |