| |
Group 1 (Critical DSS)
|
Group 2 (Relative DSS)
|
Group 3 (Non- DSS)
|
p-value
|
|---|
|
Vertebral Levels
|
27
|
148
|
15
| |
|
Gender
|
F: 11
|
F: 19
|
F: 4
|
0.65
|
|
M: 6
|
M: 10
|
M:10
|
|
Mean Age at Surgery (Years (±SD))
|
F: 68.0 (11.0)
|
F: 67.1 (10.4)
|
F: 64.5 (9.0)
|
0.26
|
|
M: 67.0 (10.3)
|
M: 62.1 (12.9)
|
M: 47.4 (26.8)
|
|
Mean LF thickness (mm (±SD))
|
R: 3.8 (1.4)
|
R: 3.4 (1.7)
|
R: 3.1 (0.6)
|
R: 0.45
|
|
L: 4.0 (1.7)
|
L: 3.4 (1.6)
|
L: 3.3 (1.1)
|
L: 0.30
|
|
Mean Spinal Canal Diameter (mm (±SD))
|
12.7 (1.3)
|
15.4 (1.3)
|
17.7 (2.6)
|
<0.001*
|
|
Mean Disc Height (mm (±SD))
|
10.4 (2.3)
|
9.9 (2.5)
|
9.7 (2.9)
|
0.58
|
|
BMI (±SD)
|
22.8 (2.3)
|
24.3 (3.2)
|
26.7 (3.7)
|
0.06
|
-
LF ligamentum flavum, BMI body mass index, SD standard deviation, F female, M male, R right, L left
- *significant difference between three study groups
