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Table 7 Baseline frequencies of bone marrow lesions

From: Structural tissue damage and 24-month progression of semi-quantitative MRI biomarkers of knee osteoarthritis in the IMI-APPROACH cohort

N = 289

All knees

No ROA

ROA

P-value

Frequency

Percent

Frequency

Percent

Frequency

Percent

 

Knee

Number of regions

0

65

22.5

48

37.2

17

10.6

0.0000

1

39

13.5

26

20.2

13

8.1

2

60

20.8

28

21.7

32

20.0

3

55

19.0

18

14.0

37

23.1

4

37

12.8

7

5.4

30

18.8

5

18

6.2

2

1.6

16

10.0

6 + 

15

5.2

0

0.0

15

9.4

Maximum score

0

65

22.5

48

37.2

17

10.6

0.0000

1

91

31.5

44

34.1

47

29.4

2

78

27.0

24

18.6

54

33.8

3

55

19.0

13

10.1

42

26.3

MFTJ

Number of regions

0

187

64.7

106

82.2

81

50.6

0.0000

1

44

15.2

15

11.6

29

18.1

2

19

6.6

7

5.4

12

7.5

3

18

6.2

1

0.8

17

10.6

4 + 

21

7.3

0

0.0

21

13.1

Maximum score

0

187

64.7

106

82.2

81

50.6

0.0000

1

51

17.6

15

11.6

36

22.5

2

28

9.7

5

3.9

23

14.4

3

23

8.0

3

2.3

20

12.5

LFTJ

Number of regions

0

221

76.5

114

88.4

107

66.9

0.0000

1

30

10.4

12

9.3

18

11.3

2

10

3.5

3

2.3

7

4.4

3

13

4.5

0

0.0

13

8.1

4 + 

15

5.2

0

0.0

15

9.4

Maximum score

0

221

76.5

114

88.4

107

66.9

0.0000

1

32

11.1

13

10.1

19

11.9

2

21

7.3

2

1.6

19

11.9

3

15

5.2

0

0.0

15

9.4

PFJ

Number of regions

0

123

42.6

60

46.5

63

39.4

0.2901

1

66

22.8

27

20.9

39

24.4

2

71

24.6

30

23.3

41

25.6

3 + 

29

10.0

12

9.3

17

10.6

Maximum score

0

123

42.6

60

46.5

63

39.4

0.2806

1

88

30.4

37

28.7

51

31.9

2

57

19.7

22

17.1

35

21.9

3

21

7.3

10

7.8

11

6.9