Group | Preoperative | 3 days after surgery | 7 days after surgery | 14 days after surgery | 1 month after the operation | 3 months after the operation | 6 months after the operation |
A (n = 19) | 8.11 ± 0.57 | 8.26 ± 0.49 | 8.12 ± 0.53 | 7.22 ± 0.39 | 6.06 ± 0.52 | 4.51 ± 0.43 | 2.93 ± 0.27 |
B (n = 20) | 8.31 ± 0.61 | 6.29 ± 0.45* | 5.73 ± 0.37* | 4.98 ± 0.41* | 3.12 ± 0.35* | 1.68 ± 0.15* | 0* |
P value | 0.002 | 0.004 | 0.005 | 0.001 | 0.001 | 0.000 | 0.000 |