Biomimetic Composite-Metal Hip Resurfacing Implant

Research Letters in Materials Science. 2008;2008 DOI 10.1155/2008/368985

 

Journal Homepage

Journal Title: Research Letters in Materials Science

ISSN: 1687-6822 (Print); 1687-6830 (Online)

Publisher: Hindawi Publishing Corporation

LCC Subject Category: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials

 

AUTHORS

Habiba Bougherara (Department of Mechanical and Industrial Engineering, Ryerson University, ON, M5B 2K3, Canada)
Martin N. Bureau (Department of Mechanical and Industrial Engineering, Ryerson University, ON, M5B 2K3, Canada)

EDITORIAL INFORMATION

 

Abstract | Full Text

Hip resurfacing technique is a conservative arthroplasty used in the young patient in which the femoral head is reshaped to accept metal cap with small guide stem. In the present investigation, a hybrid composite-metal resurfacing implant is proposed. The cup is made of carbon fiber/polyamide 12 (CF/PA12) covered with a thin layer of cobalt chrome (Co-Cr). Finite element (FE) method was applied to analyze and compare the biomechanical performances of the hybrid hip resurfacing (HHR) and the conventional Birmingham (BHR). Results of the finite element analysis showed that the composite implant leads to an increase in stresses in the cancellous bone by more than 15% than BHR, indicating a lower potential for stress shielding and bone fracture and higher potential for bone apposition with the HHR.