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Table 1 Finite element model material properties

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