Table 2 Comparative analysis of imaging factors among patients exhibiting varying degrees of ISI.

From: Correlation of spinal cord compression angle and increased signal intensity on MRI in patients with ossification of posterior longitudinal ligament

 

Grade 0 ISI (n = 54)

Grade 1 ISI (n = 42)

Grade 2 ISI (n = 22)

P value

Spinal cord compression angle (°)

26.34 ± 8.95

34.05 ± 11.52a

36.55 ± 9.49a

 < 0.001

Spinal cord compression ratio (%)

30.40 ± 7.12

24.58 ± 6.11a

24.27 ± 6.18a

 < 0.001

OPLL type

   

0.999

Localized

11 (20.4)

9 (21.4)

5 (22.7)

 

Segmental

7 (13.0)

6 (14.3)

2 (9.1)

 

Continuous

7 (13.0)

6 (14.3)

3 (13.6)

 

Mixed

29 (53.7)

21 (50.0)

12 (54.5)

 

Cervical curvature

   

0.208

Lordosis

23 (42.6)

12 (28.6)

11 (50.0)

 

Straight

16 (29.6)

13 (31.0)

8 (36.4)

 

Kyphosis

15 (27.8)

17 (40.5)

3 (13.6)

 

Maximum spinal canal occupying rate (%)

51.86 ± 10.24

58.23 ± 9.79a

59.04 ± 10.66a

0.003

Cervical range of motion (°)

34.05 ± 10.31

34.89 ± 11.41

41.83 ± 14.22a,b

0.026

Segmental range of motion (°)

6.69 ± 3.67

7.00 ± 4.01

9.83 ± 3.70a,b

0.005

  1. Values are presented as n (%) or mean ± standard error of the mean.
  2. ISI, increased signal intensity; OPLL, ossification of the posterior longitudinal ligament.
  3. aComparisons with the grade 0 ISI group, P < 0.05.
  4. bComparisons with the grade 1 ISI group, P < 0.05.
Back to article page