The fatigue behaviour of bone cement was investigated with respect to the influence of loading conditions. The tests were performed under simulated physiological conditions using a testing arrangement in accordance with ISO. A pure load-controlled and pure displacement-controlled cycling procedure were compared. It is demonstrated that load control is much more critical and leads to decisively shorter life-times, or remarkably lower long-term strengths. In consequence, in order to determine reliable material properties for life-time predictions and safety assessments, it is necessary to measure the fatigue behaviour under load control as this corresponds to the normal physiological situation.
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Soltész, U. The influence of loading conditions on the life-times in fatigue testing of bone cements. J Mater Sci: Mater Med 5, 654–656 (1994). https://doi.org/10.1007/BF00120350
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DOI: https://doi.org/10.1007/BF00120350