Before operation

After operation

P value

Ap (cm)

1.6 ± 1.2

−2.4 ± 0.9

<0.001

Bp (cm)

2.6 ± 1.6

−2.7 ± 1.4

<0.001

Aa (cm)

1.4 ± 1.1

−2.3 ± 0.8

<0.001

Ba (cm)

2.4 ± 1.5

−2.5 ± 1.2

<0.001

TVL (cm)

7.76 ± 0.22

7.98 ± 0.48

0.44

C (cm)

−5.8 ± 1.4

−6.6 ± 1.5

0.061