From: Biomechanical effects of metastasis in the osteoporotic lumbar spine: A Finite Element Analysis
Elastic Modulus (MPa) | Poisson’s Ratio | |
---|---|---|
Vertebra | ||
Cancellous Bone | 100 | 0.2 |
Cortical Bone | 12,000 | 0.3 |
Vertebral Bony Endplate | 4000 | 0.3 |
Cartilage Endplate | 5 | 0.17 |
Posterior Bone | 3500 | 0.25 |
Intervertebral Disc | ||
Nucleus Polposus | 1 | 0.49 |
Annular Fibers | Neo-Hooke | |
Annular Layers | Neo-Hooke | |
Joint | ||
Facet Joints | 3500 | |
Ligaments | ||
Anterior Longitudinal | 15.6–20.0 | 0.3 |
Posterior Longitudinal | 10.0–20.0 | 0.3 |
Intertransverse | 12–58.7 | 0.3 |
Ligamentum Flavum | 13.0–19.5 | 0.3 |
Interspinous | 9.8–12.0 | 0.3 |
Supraspinous | 8.8–15.0 | 0.3 |
Capsular | 7.5–33.0 | 0.3 |
Metastasis | ||
Lytic Bone Metastasis | 0.01 | 0.4995 |