Table 1 Material Properties and mesh types of cervical spine and implants
Cervical component | Young’s modulus (MPa) | Poisson ratio | Cross-sectional area (mm2) | Element type |
|---|---|---|---|---|
Cortical bone | 12000 | 0.29 | - | C3D4 |
Cancellous bone | 100 | 0.29 | - | C3D4 |
Endplate | 1200 | 0.29 | - | C3D4 |
Cartilage | 10.4 | 0.4 | - | C3D4 |
Annulus ground substance | 3.4 | 0.4 | - | C3D4 |
Annulus fibers | 450 | 0.45 | - | T3D2 |
Nucleus pulposus | 1 | 0.49 | - | C3D4 |
ALL | 30 | 0.3 | 12 | T3D2 |
PLL | 20 | 0.3 | 45 | T3D2 |
LF | 1.5 | 0.3 | 5 | T3D2 |
IL | 1.5 | 0.3 | 13 | T3D2 |
SL | 1.5 | 0.3 | 13.1 | T3D2 |
CL | 10 | 0.3 | 14 | T3D2 |
Ti6Al4V | 114.000 | 0.35 | - | C3D4 |
PEEK | 3400 | 0.4 | - | C3D4 |