Table 1 Material properties of lumbar finite element model
Material science | Elastic modulus/MPa | Poisson ratio | Cross-sectional area (mm2) |
|---|---|---|---|
Cortical bone | 12,000 | 0.29 | – |
Cancellous bone | 450 | 0.29 | – |
Fibrous ring | 3.4 | 0.4 | – |
Nucleus pulposus | 1 | 0.49 | – |
Endplate | 500 | 0.4 | – |
Facet joint | 32.9 | 0.4 | – |
ALL | 10 | 0.3 | 6.0 |
PLL | 10 | 0.3 | 5.0 |
LF | 1.5 | 0.3 | 5.0 |
ISL | 1.5 | 0.3 | 10.0 |
SSL | 1.5 | 0.3 | 5.0 |
CL | 10 | 0.3 | 46 |
Titanium alloy | 116,000 | 0.3 | – |