Table 2 Clinical and radiological parameters at pre-operation and final follow-up

Clinical outcomes

 KSS knee score (points)

44.1 ± 4.9

89.9 ± 7.8

 < 0.001

 KSS function score (points)

45.5 ± 4.9

83.8 ± 7.6

 < 0.001

 Knee extension (°)

-5.4° ± 6.8°

-0.8° ± 2.9°

 < 0.001

 Knee flexion (°)

120° ± 13°

116° ± 14°

0.36

Radiological outcomes

 Femorotibial angle (°)

183° ± 9.4°

176° ± 3.0°

 < 0.001

 Prosthetic alignment (°)

  α

-

94.2° ± 1.8°

N.A

  β

-

90.7° ± 1.7°

N.A

  γ

-

2.5° ± 3.2°

N.A

  δ

-

3.3° ± 4.0°

N.A

 Radiolucent line (n, %)

-

27 (28.1%)

N.A

 Aseptic loosening (n, %)

-

3 (3.1%)

N.A