表 1.
Mechanical properties along the axial and transverse direction of cervical，thoracic, and lumbar spinal dura mater (n=5,
)
颈、胸、腰段硬脊膜轴向及横向力学性能比较（n=5，
）
| 部位
Position |
弹性模量（MPa）
Modulus of elasticity (MPa) |
断裂强度（MPa）
Tensile strength (MPa) |
断裂伸长率（%）
Elongation at break (%) |
|||||||||
| 轴向
Longitudinal direction |
横向
Transverse direction |
统计值
Statistic |
轴向/横向
Longitudinal/ transverse |
轴向
Longitudinal direction |
横向
Transverse direction |
统计值
Statistic |
轴向
Longitudinal direction |
横向
Transverse direction |
统计值
Statistic |
|||
|
*与颈段比较P<0.05，#与腰段比较P<0.05
*Compared with cervical segment, P<0.05;#compared with lumbar segment, P<0.05 | ||||||||||||
| 颈段
Cervical segment |
15.97±2.52# | 14.38±2.68# |
t=1.15
P=0.32 |
1.14±0.24# | 5.13±0.97# | 4.83±1.04# |
t=0.54
P=0.62 |
34.60±7.91# | 32.14±10.63# |
t=1.10
P=0.33 |
||
| 胸段
Thoracic segment |
12.39±1.88*# | 8.78±1.01*# |
t=5.55
P=0.01 |
1.41±0.17# | 3.51±0.67*# | 2.45±0.57*# |
t=4.50
P=0.01 |
28.62±5.24*# | 20.08± 2.83*# |
t=7.60
P=0.00 |
||
| 腰段
Lumbar segment |
8.33±3.10* | 3.46±1.24* |
t=5.33
P=0.01 |
2.40±0.42* | 2.41±0.61* | 1.16±0.35* |
t=8.49
P=0.00 |
25.77±2.46* | 17.28± 2.64* |
t=6.90
P=0.00 |
||
| 统计值
Statistic |
F=11.26
P= 0.00 |
F=45.95
P= 0.00 |
F=25.05
P= 0.00 |
F=15.91
P= 0.00 |
F=34.08
P= 0.00 |
F=3.17
P=0.08 |
F=7.31
P=0.01 |
|||||