Finite Element Analysis of a Lumbar Vertebra Reconstructed by Biocomposite Alloplastic Grafts


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This research approaches the fourth lumbar (L4) vertebra reconstruction by a tronconic alloplastic graft fabricated by a powder metallurgy technology using Ca5(PO4)3(OH) (hydroxyapatite), TiH2 (titanium hydride) and CaCO3 (calcium carbonate) particles as initial powder mixture. The high frequency of the L4 vertebra fractures due to motor vehicle traffic accidents justify the necessity of vertebral reconstruction. This approach simulates the biomechanical behavior of the ANSYS model consisting in the L4 vertebra and the tronconic biocomposite graft during the frontal impact load. The von Misses stress and strain responses from the model depend on the physical and mechanical properties of the biocomposite grafts, experimentally determined. The best simulated mechanical behavior corresponds to the mechanical shielding phenomenon occurring from the biocomposite graft on behalf of the L4 vertebra.



Edited by:

Mihai Demian




D. Coman et al., "Finite Element Analysis of a Lumbar Vertebra Reconstructed by Biocomposite Alloplastic Grafts", Advanced Engineering Forum, Vol. 27, pp. 126-135, 2018

Online since:

April 2018




* - Corresponding Author

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