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Table 2 Material properties of components [5xiao, 10 zhang m 15faizan, 17 Vadapalli S, 18 Lin B, 19zhang World Neurology, 20zhang Biomed Mater, 21Zhang Z Comput Methods Biomech Biomed Engin 23zhong]

From: Biomechanical evaluation of autologous bone-cage in posterior lumbar interbody fusion: a finite element analysis

Element Set

Young’s modulus (MPa)

Poisson’s Ratio (μ)

Cortical bone

12,000

0.3

Cancellous bone

100

0.2

Anulus

4.2

0.45

Nucleus pulposus

1.0

0.4999

Anterior longitudinal ligament

15

 

Posterior longitudinal ligament

10

 

Transverse ligament

10

 

Interspinous ligament

10

 

Supraspinous ligament

8

 

Ligamentum flavum

15

 

Capsular ligament

7.5

 

Cage (PEEK)

3600

0.3

Cage (Titanium)

110,000

0.3

Cage (Autologous bone)

5000

0.29

Pedicle screws (Titanium)

110,000

0.3

Rods (Titanium)

110,000

0.3

Bone graft

1940

0.3