Component | Young’s modulus (MPa) | Poisson’s ratio | Element types |
---|---|---|---|
Cortical | 12,000 (7920) | 0.3 | C3D8R |
Cancellous | 100 (33) | 0.3 | C3D4 |
Posterior element | 3500 (2310) | 0.3 | C3D4 |
Endplate | 24 (16) | 0.4 | C3D8R |
Sacrum | 5000 | 0.2 | C3D4 |
Cage | 3600 | 0.25 | C3D8R |
Screws and rods | 110,000 | 0.3 | C3D8R |
Lateral plate | 110,000 | 0.3 | C3D8R |
Facet cartilage | Neo-Hookean, C10 = 2 | C3D8RH | |
Annulus ground | Mooney–Rivlin, C1 = 0.18, C2 = 0.045 | C3D8RH | |
Nucleus pulposus | Mooney–Rivlin, C1 = 0.12, C2 = 0.03 | C3D8RH | |
Annulus fibers | Calibrated stress–strain curves | Spring | |
Seven ligaments | Calibrated deflection–force curves | Spring |