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Table 1 Material properties of the intact lumbar spine model and ALIF/OLIF surgical models

From: Computational comparison of anterior lumbar interbody fusion and oblique lumbar interbody fusion with various supplementary fixation systems: a finite element analysis

Components

Young’s modulus (MPa)

Poisson’s ratio

Cross-sectional area (mm2)

Cortical

12,000

0.3

NA

Cancellous

100

0.3

NA

Endplate

1000

0.3

NA

Posterior structure

3500

0.3

NA

Bone graft

3500

0.3

NA

Facet cartilage

10

0.4

NA

Annulus fibre

450

0.45

NA

Implants

110,000

0.3

NA

Nucleus pulpous

Mooney–Rivlin, C10 = 0.12, C01 = 0.03

NA

Annulus ground

Mooney–Rivlin, C10 = 0.18, C01 = 0.045

NA

Anterior longitudinal

7.8 (< 12), 20 (> 12%)

63.7

Posterior longitudinal

10 (< 11%), 20 (> 11%)

20

Ligamentum flavum

15 (< 6.2%), 19.5 (> 6.2%)

40

Capsular

7.5 (< 25%), 32.9 (> 25%)

30

Interspinous

10 (< 14%), 11.6 (> 14%)

40

Supraspinous

8.0 (< 20%), 15 (> 20%)

30

Intertransverse

10 (< 18%), 58.7 (> 18%)

1.8