Table 4 Functional outcomes at 1, 6, and 12 months for the two groups

 VAS score*

6.34 ± 1.90

4.32 ± 0.65

1.99 ± 0.32

1.03 ± 0.16

< 0.001

 KSS objective knee indicators

42.52 ± 12.67

59.07 ± 7.11

63.61 ± 3.25

68.56 ± 12.62

< 0.001

 KSS symptom

9.35 ± 3.47

11.47 ± 2.41

19.55 ± 3.31

21.95 ± 1.18

< 0.001

 KSS patient satisfaction

18.75 ± 6.45

27.82 ± 7.07

31.48 ± 5.49

37.45 ± 5.17

< 0.001

 KSS patient expectations

10.70 ± 1.08

9.31 ± 1.84

11.07 ± 2.42

13.30 ± 2.73

< 0.001

 KSS functional activities

34.92 ± 13.85

45.13 ± 12.26

62.96 ± 11.05

79.94 ± 13.96

< 0.001

 VAS score*

6.64 ± 1.71

3.58 ± 0.71

1.98 ± 0.19

1.02 ± 0.13

< 0.001

 KSS objective knee indicators

42.28 ± 13.45

59.39 ± 7.37

63.91 ± 2.99

68.38 ± 12.32

< 0.001

 KSS symptom

9.05 ± 3.69

11.58 ± 2.33

19.64 ± 2.74

21.85 ± 1.10

< 0.001

 KSS patient satisfaction

18.90 ± 5.55

28.39 ± 6.97

31.67 ± 5.43

37.85 ± 3.71

< 0.001

 KSS patient expectations

10.65 ± 1.50

9.49 ± 1.78

10.85 ± 2.53

13.67 ± 1.86

< 0.001

 KSS functional activities

35.36 ± 11.83

45.51 ± 12.65

63.52 ± 10.65

81.67 ± 5.58

< 0.001