Validation of Compressive Test of Biodegradable Lumbar Interbody Spinal Cage with Different Porous Structure Using Computed Tomography-Based Finite Element Analysis

Muhammad Hilmi Jalil, M. H. Mazlan, M. Todo

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抄録

Evaluation of spinal cage structures had been done using Computed tomography-based finite element analysis (CT/FEA) with homogenous bone properties. However, it is important to consider the inhomogeneity of bone properties in order to obtain more precise validation. This study compares the experimental and numerical analysis of CT/FEA by establishing relation between the Hounsfield Unit (HU) values, bone density and material properties. 6 cage designs with different pore structure were created and optimized based on the conventional bullet-shaped tip cage design. Specimens were fabricated using a fused deposition method (FDM) 3D printer. Unidirectional compression test machine was done and evaluated using FEA tool. A conventional bilateral mode configuration was applied to simulate standard PLIF procedure in the L4–L5. CT/FEA was done to characterize the stress profile of cage-endplate interface, cage body and failed element distribution. From the results, layers deviation and severe micro crack were seen at ruptured spinal cage specimen’s side surface. OPEN SOLID showed highest value of compressive value in the experiment and simulation. Finally, FEM stress profiles indicated that subsidence might have occurred for CLOSE 1 mm, OPEN SOLID, and OPEN 1 mm cage designs at the cage-endplate interface due to the sudden spike at endplate region. Overall, optimally designed PLA spinal cages have sufficient mechanical properties to support lumbar interbody loads. Furthermore, this optimization technique may be utilized to balance the complex requirements of load-transfer, stress shielding, and porosity when using biodegradable material for fusion spinal cages.

本文言語英語
ホスト出版物のタイトルHuman-Centered Technology for a Better Tomorrow - Proceedings of HUMENS 2021
編集者Mohd Hasnun Hassan, Zulkifli Ahmad (a) Manap, Mohamad Zairi Baharom, Nasrul Hadi Johari, Ummu Kulthum Jamaludin, Muhammad Hilmi Jalil, Idris Mat Sahat, Mohd Nadzeri Omar
出版社Springer Science and Business Media Deutschland GmbH
ページ153-167
ページ数15
ISBN(印刷版)9789811641145
DOI
出版ステータス出版済み - 2022
イベントHuman Engineering Symposium, HUMENS 2021 - Virtual, Online
継続期間: 2 22 20212 22 2021

出版物シリーズ

名前Lecture Notes in Mechanical Engineering
ISSN(印刷版)2195-4356
ISSN(電子版)2195-4364

会議

会議Human Engineering Symposium, HUMENS 2021
CityVirtual, Online
Period2/22/212/22/21

All Science Journal Classification (ASJC) codes

  • 自動車工学
  • 航空宇宙工学
  • 機械工学
  • 流体および伝熱

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