Research Article
Finite Element Analysis of a Novel Fusion Strategy in Minimally Invasive Transforaminal Lumbar Interbody Fusion
Table 1
Summary of material properties used in finite element models.
| | Material properties | Young’s modulus (MPa) | Poisson’s ratio | Cross section area (mm2) |
| | Cortical bone | 12000 | 0.3 | — | | Cancellous bone | 100 | 0.2 | — | | Endplate | 4000 | 0.3 | — | | Posterior bone | 3500 | 0.25 | — | | Articular cartilage | 25 | 0.25 | — | | Annulus fibrosus | 6 | 0.40 | — | | Nucleus pulposus | 1 | 0.50 | — | | ALL | 7.8 | — | 22.4 | | PLL | 1 | — | 7.0 | | LF | 1.7 | — | 14.1 | | ITL | 1 | — | 0.6 | | CL | 7.5 | — | 10.5 | | ISL | 1 | — | 14.1 | | SSL | 8 | — | 10.5 | | Cage (PEEK material) | 3500 | 0.3 | | | Screws and rods (titanium alloy material) | 110000 | 0.3 | |
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ALL: Anterior longitudinal ligament; PLL: Posterior longitudinal ligament; LF: Ligament flavum; ISL: Interspinous ligament; SSL: Supraspinous ligament; ITL: Intertransverse ligament; CL: Joint capsule ligament.
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