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Table 3 The qualitative and quantitative values of the paraspinal muscles in each lumbar segment

From: Paraspinal back muscles in asymptomatic volunteers: quantitative and qualitative analysis using computed tomography (CT) and magnetic resonance imaging (MRI)

L-spine level

Men

Women

CT

MRI

CT

MRI

GG

CSA of PM (mm2)

CSA ratio

HU

GG

CSA of PM (mm2)

CSA ratio

Fat fraction (%)

GG

CSA of PM (mm2)

CSA ratio

HU

GG

CSA of PM (mm2)

CSA ratio

Fat fraction(%)

L1/2

0.00*

2475.52

171.64*

52.55

0.30*

2464.85

197.43*

8.15

0.07*

1608.45

139.07*

45.91

0.74*

1634.75

161.21*

13.33

L2/3

0.20

2587.25

168.86*

51.46

0.53

2635.92

191.29*

10.17

0.29*

1827.64

144.6*

42.24

0.93*

1851.84

165.07*

15.77

L3/4

0.23*

2687.26

165.36*

47.96

0.83*

2624.13

175.57

13.52

0.75

1953.68

147.73*

38.32

1.11

1968.90

161.93

21.07

L4/5

1.00

2651.20

159.71

44.66

1.37

2419.63

164.36

16.88

1.43

2090.03

160.47

30.65

1.17

1971.08

171.64

27.63

L5/S1

1.40*

2197.15*

143.51

40.53

1.87*

1343.42*

101.86*

23.01

1.82

1764.43*

141.25

22.89

1.89

1218.41*

121.21*

34.84

Total

0.57

2519.67*

387.36*

47.43

0.98

2297.59*

166.14

14.35

0.87

1848.24*

299.71*

36.00

1.27

1728.99*

156.22

22.53

  1. GG Mean Goutallier grade, CSA Cross sectional area, PM Paraspinal muscle, CSA ratio Paraspinal muscle CSA/vertebral body CSA*100, HU Hounsfield unit
  2. In GG (between both men and women), ‘*’ means p < .05 using Mann-Whitney U test
  3. In CSA, CSA ratio (between both men and women), ‘*'means p < .05 using T-test