Bearing-Foreign Material Deposition on Retrieved Co-Cr Femoral Heads: Composition and Morphology

Figure 4

Representative microscopic morphological features observed by SEM on the deposit regions on the femoral head surfaces showing (a) pronounced scrape with deposits, (b) large, isolated deposits, (c) areas containing many small deposits <10 μm in diameter, (d) otherwise relatively featureless film showing some evidence of fracture, and (e) evidence of more than one compound within the deposit region. Images (a)–(e) are, respectively, from femoral heads A–E in Figure 1.

(a)

(b)

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(d)

(e)