Mechanical assessment of a hip joint stem model made of a PEEK/carbon fibre composite under compression loading

• Autorzy: Dworak M. , Błażewicz S.

Identyfikatory

DOI

10.5277/ABB-00359-2015-02

• Języki publikacji: EN

Abstrakty

EN

Purpose: The aim of the work was to manufacture a composite stem model consisting of carbon fibres (CF) and polyether ether ketone (PEEK) and to perform the surface strain and stress distributions in the stem-femoral bone model under compression loading. Methods: Composite stems differing in elasticity were prepared. Three types of composite stems having different arrangements of carbon fibre reinforcements (carbon fibre roving, carbon fibre sleeves and their combinations) in the polymer matrix were made. The stems were cementless fixed in the femoral bone model channel or with the use of the polymer bone cement (PMMA). Mechanical behaviour of composite stems under compression loading was compared with a metallic stem by strain gauge measurements at different parts of stem/bone model systems. Results: The values of stresses in the proximal part of the bone model for cemented and cementless fixations of the composite stem in the femoral bone channel were higher than those noted for the metallic stem. The increase in proximal bone stress was almost similar for both types of fixation of composite stems, i.e., cemented and cementless fixed stems. Conclusions: The optimal range of mechanical stiffness, strengths and work up to fracture was obtained for composite stem made of carbon fibre sleeves and carbon fibres in the form of roving. Depending on the elasticity of the composite stem model, an increase in the stress in the proximal part of femoral bone model of up to 40% was achieved in comparison with the metallic stem.

Słowa kluczowe

EN

hip prosthesis; carbon fibres; PEEK matrix; stress shielding; composite stem

PL

staw biodrowy; proteza; włókna węglowe; biomateriały

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Acta of Bioengineering and Biomechanics
• Rocznik: 2016
• Tom: Vol. 18, no. 2
• Strony: 71--79
• Opis fizyczny: Bibliogr. 24 poz., rys., tab., wykr.

Twórcy

autor

Dworak M.

• AGH – University of Science and Technology, Faculty of Materials Science and Ceramics, Kraków, Poland

autor

Błażewicz S.

• AGH – University of Science and Technology, Faculty of Materials Science and Ceramics, Kraków, Poland

Bibliografia

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.