Abstract

Background: Mechanically assisted crevice corrosion at head neck interface puts implants at risk of trunnionosis, femoral head dissociation, implant failure and the development of metallosis. Metal-on-Metal bearings have very low wear rates, significantly lower than metal-on-polyethylene, but their wear results in cobalt and chromium ion systemic distribution. We present a study of the MITCH metal-on-metal bearing surface coupled with an Accolade TMZF stem.

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