Table 2 Intraoperative indexes of patients

Operation time (min)

46.82±1.03

48.74±2.35

<0.001

Osteotomy volume of medial posterior femoral condyle (mm)

9.89±0.98

9.25±0.72

<0.001

Osteotomy volume of lateral Posterior femoral condyle (mm)

9.59±1.37

9.47±1.32

0.663

external rotation angle (°)

1.26±0.21

1.28±0.17

0.609