Table 3 Improvement rate from baseline to 12-month postoperatively in Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), visual analog scale (VAS) for pain, Japanese Knee Osteoarthritis Measure (JKOM), and Knee injury and Osteoarthritis Outcome Score (KOOS) scores among Kellgren-Lawrence classifications

27.7 ± 15.1

35.1 ± 17.5

37.6 ± 21.5

0.27

0.21

0.70

35.5 ± 18.6

52.1 ± 22.7

55.4 ± 30.8

0.07

0.06

0.70

27.4 ± 15.3

37.4 ± 18.5

37.1 ± 20.8

0.15

0.24

0.97

52.9 ± 12.0

48.6 ± 17.5

45.4 ± 14.6

0.46

0.28

0.56

11.2 ± 9.4

26.0 ± 16.6

25.7 ± 17.1

0.01^a

0.04^a

0.96

20.7 ± 20.2

37.4 ± 24.6

42.4 ± 25.8

0.07

0.045^a

0.56

14.4 ± 9.6

31.6 ± 20.1

32.2 ± 18.5

0.01^a

0.03^a

0.92

68.5 ± 14.3

56.3 ± 17.9

56.1 ± 14.0

0.048^a

0.08

0.97

58.5 ± 26.5

22.8 ± 46.8

28.8 ± 22.1

0.02^a

0.09

0.67

14.8 ± 20.0

14.7 ± 20.9

13.0 ± 18.3

0.99

0.84

0.81

34.4 ± 49.9

7.4 ± 56.6

5.7 ± 27.8

0.15

0.20

0.92

19.1 ± 24.2

11.2 ± 27.9

17.7 ± 21.2

0.41

0.90

0.47