Surface Roughness of CoCr and ZrO<sub>2</sub> Femoral Heads with Metal Transfer: A Retrieval and Wear Simulator Study

<table>(a) Control ZrO<sub>2</sub> surfaces appeared smooth; (b) region of metal transfer (1000X).</table>

International Journal of Biomaterials

Figure 4: Surface Roughness of CoCr and ZrO<sub>2</sub> Femoral Heads with Metal Transfer: A Retrieval and Wear Simulator Study 