| one month after surgery | two months after surgery | six months after surgery | one year after surgery |
---|---|---|---|---|
Experimental group | 34.68 ± 2.46 | 60.05 ± 2.65 | 82.59 ± 3.19 | 90.50 ± 2.24 |
Control group | 34.45 ± 3.11 | 59.14 ± 2.70 | 78.95 ± 3.68 | 87.86 ± 2.87 |
P | 0.789 | 0.265 | 0.001 | 0.001 |