Background:The progressive evolution in hip replacement research is directed to\nfollow the principles of bone and soft tissue sparing surgery. Regarding hip implants,\na renewed interest has been raised towards short uncemented femoral implants. A\nheterogeneous group of short stems have been designed with the aim to approximate\ninitial, post-implantation bone strain to the preoperative levels in order to minimize the\neffects of stress shielding. This study aims to investigate the biomechanical properties\nof two distinctly designed femoral implants, the TRI-LOCK Bone Preservation Stem, a\nshortened conventional stem and the Minima S Femoral Stem, an even shorter and\nanatomically shaped stem, based on experiments and numerical simulations. Furthermore,\nfinite element models of implantâ??bone constructs should be evaluated for their\nvalidity against mechanical tests wherever it is possible. In this work, the validation was\nperformed via a direct comparison of the FE calculated strain fields with their experimental\nequivalents obtained using the digital image correlation technique.
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