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