Gradient composite materials for artificial intervertebral discs

• Autorzy: Migacz K. , Chłopek J. , Morawska-Chochół A.

Identyfikatory

DOI

10.5277/abb140301

• Języki publikacji: EN

Abstrakty

EN

Composites with the gradient of the Young’s modulus constitute a new group of biomimetic materials which affect the proper distribution of stresses between the implant and the bone. The aim of this article was to examine the mechanical properties of gradient materials based on carbon fibre-polysulfone composite, and to compare them to the properties of a natural intervertebral disc. Gradient properties were provided by different orientation or volume fraction of carbon fibres in particular layers of composites. The results obtained during in vitro tests displayed a good durability of the gradient materials put under long-termstatic load. However, the configuration based on a change in the volume fraction of the fibres seems more advantageous than the one based on a change of the fibres’ orientation. Studied materials were designed to replace the intervertebral disc. The effect of the Young’s modulus of the material layers on the stress distribution between the tissue and the implant was analyzed and the biomimetic character of the gradient composites was stated. Unlike gradient materials, the pure polysulfone and the non-gradient composite resulted in the stress concentration in the region of nucleus pulposus, what is highly disadvantageous and does not occur in the stress distribution of natural intervertebral discs.

Słowa kluczowe

EN

composite; gradient material; intervertebral disc replacement

PL

kompozyty; materiał gradientowy; krążek międzykręgowy

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Acta of Bioengineering and Biomechanics
• Rocznik: 2014
• Tom: Vol. 16, no. 3
• Strony: 3--12
• Opis fizyczny: Bibliogr. 28 poz., rys., tab.

Twórcy

autor

Migacz K.

• AGH University of Science and Technology, Faculty of Materials Science and Ceramics, Department of Biomaterials, Krakow, Poland

autor

Chłopek J.

• AGH University of Science and Technology, Faculty of Materials Science and Ceramics, Department of Biomaterials, Krakow, Poland

autor

Morawska-Chochół A.

• AGH University of Science and Technology, Faculty of Materials Science and Ceramics, Department of Biomaterials, Krakow, Poland

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