Assessment of carbon fibre composite fracture fixation plate using finite element analysis

Hossein Saidpour

    Research output: Contribution to journalArticlepeer-review

    27 Citations (Scopus)


    n the internal fixation of fractured bone by means of bone-plates fastened to the bone on its tensile surface, an on-going concern has been the excessive stress shielding of the bone by the excessively-stiff stainless-steel plate. The compressive stress shielding at the fracture-interface immediately after fracture-fixation delays callus formation and bone healing. Likewise, the tensile stress shielding in the layer of bone underneath the plate can cause osteoporosis and decrease in tensile strength of this layer.
    In this study a novel forearm internal fracture fixation plate made from short carbon fibre reinforced plastic (CFRP) was used in an attempt to address the problem. Accordingly, it has been possible to analyse the stress distribution in the composite plates using finite-element modelling.
    A three-dimensional, quarter-symmetric finite element model was generated for the plate system. The stress state in the underlying bone was examined for several loading conditions. Based on the analytical results the composite plate system is likely to reduce stress-shielding effects at the fracture site when subjected to bending and torsional loads. The design of the plate was further optimised by reducing the width around the innermost holes.
    Original languageEnglish
    Pages (from-to)1157–1163
    Number of pages7
    JournalAnnals of Biomedical Engineering
    Issue number7
    Publication statusPublished - 27 May 2006


    • Fracture fixation plate Forearm fractures Finite element analysis


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