Pelvic rotation R2 (˚)

Pelvic rotation R3 (˚)

Difference

Difference (%)

t

pvalue

Group A, mean (SD)

7.9 (5.0)

12.3 (5.4)

4.39 (4.96)

91.6 (166.8)

3.47

0.002

Group B, mean (SD)

10.5 (4.1)

6.4 (5.1)

−4.2 (4.83)

−38.8 (44.3)

−4.64

<0.001