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The “damage accumulation” phenomenon has not been quantitatively demonstrated in clinical cement mantles surrounding femoral hip stems. We stained transverse sections of 11 postmortem retrieved femoral hip components fixed with cement using fluorescent dye-penetrant and quantified cement damage, voids, and cement–bone interface gaps in epifluorescence and white light micrographs. Crack density (Cr...
We have developed a technique to directly observe the micromechanics of the stem–cement and cement–bone interfaces of cemented femoral stems under physiologically relevant loading conditions. Thick transverse sections of a stem–cement–femur construct were fixed to the base of a test frame. Ante- and retro-verting torques were applied to the femoral stem by screwing the stem (via a pair of through...
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