Abstract

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 fibre/polyamide 12 (CF/PA12) covered with a thin layer of (Co-Cr). Finite element (FE) method was applied to analyze and compare the biomechanical performances of both composite and Co-Cr implants. Results of the finite element analysis showed that the composite implant leads to stresses in the cancellous bone16% higher than Co-Cr, indicating a lower potential for stress shielding and higher potential for bone apposition with the hybrid resurfacing implant.

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