Table 1 Patients’ baseline characteristics

Age, years

68.1 ± 8.1

61.3 ± 5.3

74.8 ± 3.7

Number of patients

74

36

38

Male

19

15

4

Female

55

21

34

 < 0.01

Body mass index, kg/m²

25.5 ± 4.6

26.1 ± 5.5

25.0 ± 3.4

0.34

Follow- up period, months

32.9 ± 12.9

33.8 ± 13.7

31.2 ± 12.6

0.18

OA, n

49

27

22

^†Grade

1

3

1

2

2

28

14

14

3

18

12

6

ON, n

32

14

18

^‡Stage

1

2

2

0

2

0

0

0

3

4

2

2

4

26

10

16