Figure 13From: Are asymmetric metal markings on the cone surface of ceramic femoral heads an indication of entrapped debris? Fractured ball heads selected for in-depth fractographic analysis. a) Test no. 15 (<103 cycles) and b) Test no. 5 (3.3 106 cycles). “Region 1/2” designates the regions of increased contact pressure for the presence of a contaminant.Back to article page