
Angle between arc plane and sagittal plane

Flexion contracture

Varus and valgus deformity


<5° group A

19.05 ± 7.85

9.59 ± 7.99

2.20 ± 1.83

>5° group B

24.39 ± 14.07

11.20 ± 6.97*

4.17 ± 2.20**

p

0.327

0.221

0.03

 *A significant difference between groups was considered for p < 0.05. When the radiographic RLFB angle is greater than 5°, the flexion contracture angle has strong linear positive correlation with the RLFB angle (r = 0.535, p < 0.05)
 Comparing the angle of sagittal plane and arc plane, it is found that there is no statistical difference between the two groups (p = 0.327)
 **When RLFB is greater than 5°, it has no linear correlation with the varus and valgus deformity, but there are statistical differences in the varus and valgus deformity between two groups (p = 0.03)