Table 4 K–L classification system

KOOS symptoms^a

 Before

51.47 ± 19.11

39.73 ± 16.74

42.4 ± 28.46

 1 month

77.31 ± 14.83

66.69 ± 15.11

65.26 ± 21.42

 6 months

83.84 ± 18.45

65.62 ± 21.56

70.02 ± 31.41

 p value^b

 < 0.0001

 < 0.0001

 < 0.0001

KOOS pain^a

 Before

41.99 ± 17

35.12 ± 15.30

43.92 ± 24.92

 1 month

75.6 ± 13.93

64.04 ± 14.90

66.36 ± 21.18

 6 months

79.45 ± 18.61

64.48 ± 23.56

71.34 ± 30.46

 p value^b

 < 0.0001

 < 0.0001

 < 0.0001

KOOS functional^a

 Before

44.47 ± 18.68

38.35 ± 14.47

28.1 ± 15.98

 1 month

77.81 ± 14.34

65.82 ± 16.34

71.12 ± 20.82

 6 months

79.83 ± 19.96

64.3 ± 23.21

77.7 ± 28.52

 p value^b

 < 0.0001

 < 0.0001

 < 0.0001

KOOS sport^a

 Before

25.5 ± 22.12

17.78 ± 14.77

23 ± 25.40

 1 month

61.5 ± 20.27

48.05 ± 19.03

51 ± 27.25

 6 months

62.1 ± 27.65

44.41 ± 30.61

56 ± 40.06

 p value^b

 < 0.0001

 < 0.0001

 < 0.0001

KOOS QoL^a

 Before

27.60 ± 14.67

20.06 ± 14.58

17.7 ± 16.39

 1 month

60.64 ± 18.72

50.59 ± 17.94

52.5 ± 28.50

 6 months

66.76 ± 21.87

48.16 ± 25.49

60 ± 33.54

 p value^b

 < 0.0001

 < 0.0001

 < 0.0001

VAS score^a

 Before

6.7 ± 1.30

6.78 ± 1.44

6.2 ± 1.30

 1 month

2.9 ± 1.16

3.05 ± 0.80

3.2 ± 1.30

 6 months

2.53 ± 1.35

3.53 ± 2.18

3.4 ± 1.52

 p value^b

 < 0.0001

 < 0.0001

 < 0.0001

OKS score^a

 Before

20.68 ± 8.70

16.06 ± 5.26

14.2 ± 6.18

 1 month

34.53 ± 6.36

29.72 ± 6.54

29.6 ± 5.94

 6 months

37.05 ± 9.78

28.59 ± 9.56

27.6 ± 10.21

 p value^b

 < 0.0001

 < 0.0001

 < 0.0001