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Effects of environmental ageing on the static and cyclic bending properties of braided carbon fibre/PEEK bone plates

Journal Article


Abstract


  • The use of titanium and steel bone plates to fix fractured limbs can create problems due to stress shielding, bone resorption and subsequent refracture. Here, braided carbon fibre reinforced poly-ether-etherketone (CF/PEEK) was evaluated as a possible implant material that could reduce these problems. CF/PEEK bone plates were aged in a simulated body environment for up to 12 weeks and then mechanically tested in 3 and 4-point bending tests. Sample mass increased by around 0.3 wt.%, yet bending stiffness and strength remained unchanged. Scanning Electron Microscopy (SEM) showed no changes in failure modes with age. Braided CF/PEEK shows an excellent resistance to fatigue failure even after prolonged ageing, easily surpassing the fatigue life of commonly used stainless steel alloys such as 316L. In addition, CF/PEEK had half the stiffness of steel for the same static strength, which would reduce stress shielding. Together, the results suggest that CF/PEEK is a highly suitable material for bone plates and should be further investigated for this application.

Authors


  •   Schambron, Thomas (external author)
  •   Lowe, Adrian (external author)
  •   McGregor, Helen V.

Publication Date


  • 2008

Citation


  • Schambron, T., Lowe, A. & McGregor, H. V. (2008). Effects of environmental ageing on the static and cyclic bending properties of braided carbon fibre/PEEK bone plates. Composites Part B: Engineering, 39 1216-1220.

Scopus Eid


  • 2-s2.0-49849087419

Ro Metadata Url


  • http://ro.uow.edu.au/scipapers/3969

Number Of Pages


  • 4

Start Page


  • 1216

End Page


  • 1220

Volume


  • 39

Place Of Publication


  • www.elsevier.com/locate/compositesb

Abstract


  • The use of titanium and steel bone plates to fix fractured limbs can create problems due to stress shielding, bone resorption and subsequent refracture. Here, braided carbon fibre reinforced poly-ether-etherketone (CF/PEEK) was evaluated as a possible implant material that could reduce these problems. CF/PEEK bone plates were aged in a simulated body environment for up to 12 weeks and then mechanically tested in 3 and 4-point bending tests. Sample mass increased by around 0.3 wt.%, yet bending stiffness and strength remained unchanged. Scanning Electron Microscopy (SEM) showed no changes in failure modes with age. Braided CF/PEEK shows an excellent resistance to fatigue failure even after prolonged ageing, easily surpassing the fatigue life of commonly used stainless steel alloys such as 316L. In addition, CF/PEEK had half the stiffness of steel for the same static strength, which would reduce stress shielding. Together, the results suggest that CF/PEEK is a highly suitable material for bone plates and should be further investigated for this application.

Authors


  •   Schambron, Thomas (external author)
  •   Lowe, Adrian (external author)
  •   McGregor, Helen V.

Publication Date


  • 2008

Citation


  • Schambron, T., Lowe, A. & McGregor, H. V. (2008). Effects of environmental ageing on the static and cyclic bending properties of braided carbon fibre/PEEK bone plates. Composites Part B: Engineering, 39 1216-1220.

Scopus Eid


  • 2-s2.0-49849087419

Ro Metadata Url


  • http://ro.uow.edu.au/scipapers/3969

Number Of Pages


  • 4

Start Page


  • 1216

End Page


  • 1220

Volume


  • 39

Place Of Publication


  • www.elsevier.com/locate/compositesb