Table 2 Comparison of preoperative and postoperative radiography parameters and clinical outcomes

Tibial length

344.7 ± 19.1

350.7 ± 19.0

6.0 ± 3.5

< 0.0001

Lower limb length

842.4 ± 38.3

849.8 ± 38.4

7.5 ± 2.3

< 0.0001

Limb length discrepancy

− 6.9 ± 3.5

6.9 ± 4.2

13.7 ± 4.8

< 0.0001

FTA

172.6 ± 2.4

184.3 ± 3.2

11.7 ± 4.6

< 0.0001

KOOS pain

33.0 ± 6.3

74.5 ± 6.8

< 0.0001

KOOS symptoms

45.1 ± 8.6

71.5 ± 10.1

< 0.0001

KOOS ADL

41.5 ± 8.7

76.7 ± 10.9

< 0.0001

KOOS Sport/Rec

36.9 ± 9.4

63.0 ± 8.0

< 0.0001

KOOS QOL

35.8 ± 7.9

61.5 ± 5.9

< 0.0001