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

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...

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Bibliographic Details
Published in:Advanced engineering forum 2018-04, Vol.27, p.126-135
Main Authors: Gruionu, Lucian Gheorghe, Gîngu, Oana, Coman, Daniela, Brehar, Felix Mircea, GORGAN, Mircea Radu
Format: Article
Language:English
Subjects:
Accident reconstruction
Biocompatibility
Biomechanics
Biomedical materials
CAD
Calcium carbonate
Composite materials
Computer aided design
Computer simulation
Finite element method
Fractures
Frontal impact
Grafting
Grafts
Hydroxyapatite
Impact loads
Mechanical properties
Motor vehicles
Powder metallurgy
Protective coatings
Shielding
Strain
Surgical implants
Titanium compounds
Traffic accidents
Traffic accidents & safety
Vertebrae
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Summary: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.
ISSN:2234-9898
2234-991X
2234-991X
DOI:10.4028/www.scientific.net/AEF.27.126