Table 3 Material properties used for various components in the current FE model
Material | Young’s modulus (MPa) | Poisson’s ratio | Cross-section area (mm2) |
|---|---|---|---|
Cortical bone | 12,000 | 0.29 | |
Cancellous bone | 450 | 0.29 | |
Posterior element | 3500 | 0.29 | |
Endplates | 500 | 0.4 | |
Annulus fibers | 3.4 | 0.4 | |
Nucleus pulposus | 1.0 | 0.49 | |
Cartilago articularis | 10 | 0.3 | |
Titanium plate | 110,000 | 0.3 | |
Screws | 110,000 | 0.3 | |
PEEK | 3600 | 0.3 | |
Ligaments | |||
Transverse ligament | 20 | 0.25 | |
Cruciate ligament | 20 | 0.3 | 5 |
Anterior longitudinal ligament (C2–C5) | 30 | 0.3 | 11.1 |
Anterior longitudinal ligament (C5–C7) | 30 | 0.3 | 12.1 |
Posterior longitudinal ligament (C2–C5) | 20 | 0.3 | 11.3 |
Posterior longitudinal ligament (C5–C7) | 20 | 0.3 | 14.7 |
Capsular ligament (C0–C1) | 1 | 0.3 | 5 |
Capsular ligament (C1–C2) | 10 | 0.3 | 5 |
Capsular ligament (C2–C5) | 20 | 0.3 | 42.2 |
Capsular ligament (C5–C7) | 20 | 0.3 | 49.5 |
Ligamentum flavum (C2–C5) | 10 | 0.3 | 46.0 |
Ligamentum flavum (C5–C7) | 10 | 0.3 | 48.9 |
Tectorial membrane | 10 | 0.3 | 10 |
Interspinous ligament (C2–C5) | 1.5 | 0.3 | 13.0 |
Interspinous ligament (C5–C7) | 1.5 | 0.3 | 13.4 |
Supraspinous ligament | 1.5 | 0.3 | 75.7 |
Alar ligament | 5.0 | 0.3 | 20 |
Apical ligament | 20 | 0.3 | 5 |
Anterior membrane | 20 | 0.3 | 5 |
Posterior membrane | 20 | 0.3 | 5 |