MRI radiological finding by disc level for discopathy

Discopathy status

L1/2

L2/3

L3/4

L4/5

L5/S1

(N%)

(N%)

(N%)

(N%)

(N%)

Discopathy involvement

Yes

10 (5%)

27 (13.5%)

81 (40.5%)

179 (89.5%)

134 (67%)

No

190 (95%)

173 (86.5%)

119 (59.5%)

21 (10.5%)

66 (33%)

Discopathy types

No Discopathy

190 (95%)

173 (86.5%)

119 (59.5%)

21 (10.5%)

66 (33%)

Disc protrusion

1 (0.5%)

2 (1%)

12 (6%)

10 (5%)

19 (9.5%)

Disc herniation

2 (1%)

1 (0.5%)

5 (20.5%)

17 (8.5%)

19 (9.5%)

Disc bulge

4 (2%)

229 (11%)

63 (31.5%)

140 (70%)

90 (45%)

Disc cephalic migration

1 (0.5%)

0 (0%)

1 (0.5%)

3 (1.5%)

2 (1%)

Disc caudal migration

2 (1%)

1 (0.5%)

0 (0%)

9 (4.5%)

3 (1.5%)

Disc sequestration

0 (0%)

1 (0.5%)

0 (0%)

0 (0%)

1 (0.5%)

Discopathy affected side

No disc

190 (95%)

173 (86.5%)

119 (59.5%)

21 (10.5%)

66 (33%)

Right side/Asymmetric

5 (2.5%)

5 (2.5%)

19 (9.5%)

29 (14.5%)

30 (15%)

Left side/Asymmetric

1 (0.5%)

9 (4.5%)

16 (8%)

58 (29%)

39 (19.5%)

Both side/diffuse

1 (0.5%)

12 (6%)

35 (17.5%)

85 (42%)

39 (19.5%)

Central/Focal

3 (1.5%)

1 (0.5%)

7 (3.5%)

7 (3.5%)

30 (15%)

Discopathy location

No disc

190 (95%)

173 (86.5%)

119 (59.5%)

21 (10.5%)

66 (33%)

central zone

3 (1.5%)

1 (0.5%)

8 (4%)

10 (9.5%)

29 (14.5%)

Subarticular zone

3 (1.5%)

2 (1%)

5 (2.5%)

16 (8%)

18 (9%)

Foramina

0 (0%)

9 (4.5%)

35 (17.5%)

105 (52.5%)

47 (23.5%)

Extra-foramina

4 (2%)

15 (7.5%)

33 (15.5%)

48 (24%)

40 (20%)

Discopathy size/severity

Normal

190 (95%)

173 (86.5%)

119 (59.5%)

21 (10.5%)

66 (33%)

Grade 1 (Mild)

4 (2%)

13 (6.5%)

39 (19.5%)

78 (39%)

67 (33.5%)

Grade 2 (Moderate)

2 (1%)

9 (4.5%)

26 (13%)

72 (36%)

46 (23%)

Grade 3 (Sever)

4 (2%)

5 (2.5%)

16 (8%)

29 (14.5%)

21 (10.5%)

Quantification yields of discopathy paraspinal muscles

Paraspinal muscles

L1/2

L2/3

L3/4

L4/5

L5/S1

Mean ± (SD)

Mean ± (SD)

Mean ± (SD)

Mean ± (SD)

Mean ± (SD)

Multifidus muscles

CSA (cm²)

Right Side

5.67 ± (2.3)

6.12 ± (1.7)

8.64 ± (4.13)

9.06 ± (2.2)

9.59 ± (3.02)

Left Side

6.09 ± (5.26)

6.35 ± (1.8)

7.14 ± (2.08)

8.69 ± (2.2)

9.19 ± (2.91)

Fatty infiltration ratio (%)

Right Side

47.31 ± (18.1)

43.94 ± (17.6)

44.81 ± (16.6)

48.64 ± (16.4)

53.90 ± (17.09)

Left Side

48.61 ± (18.8)

44.79 ± (18.3)

45.06 ± (17.3)

48.84 ± (17.2)

54.48 ± (17.13)

Erector spinae muscles

CSA (cm²)

Right Side

19.53 ± (4.6)

19.57 ± (5.1)

21.14 ± (5.9)

18.5 ± (13.6)

14.3 ± (6.89)

Left Side

19.45 ± (4.5)

19.6 ± (5.3)

19.8 ± (5.09)

17.6 ± (4.13)

13.6 ± (6.69)

Fatty infiltration ratio (%)

Right Side

37.97 ± (14.4)

43.92 ± (17.5)

44.68 ± (15.9)

52.13 ± (16.24)

58.03 ± (17.6)

Left Side

38.43 ± (15.94)

40.19 ± (16.3)

44.31 ± (16.19)

51.83 ± (17.7)

58.42 ± (19.3)