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Table 1 Material properties and elements information of the model used in this study

From: Biomechanical response of lumbar facet joints under follower preload: a finite element study

Components name

Young’s modulus (MPa)

Poisson’s ratio

Element type

Element no.

Cortical bone

14000

0.30

Hex

2585

Cancellous bone

100

0.2

Tetra

129931

Posterior elements

3500

0.25

Tetra

250978

Endplate

10000

0.25

Hex

4921

Sacrum

5000

0.2

Tetra

200295

Facet cartilage

Neo-Hookean, C10 = 2

Hex

7293

Annulus

Mooney–Rivlin, C1 = 0.18, C2 = 0.045

Hex

6000

Nucleus pulpous

Mooney–Rivlin, C1 = 0.12, C2 = 0.03

Hex

7200

Fiber

Calibrated stress–strain curves

Spring

14400

Ligament

Calibrated deflection–force curves

Spring

234