Optimized patient-specific implants

Robin Otchwemah; Thorsten Tjardes; Tim Dahmen; Michael Roland; Stefan Diebels; Philipp Slusallek

In: Eugenio Oñate; Xavier Oliver; Antonio Huerta (Hrsg.). Proceedings of the jointly organized 11th World Congress on Computational Mechanics (WCCM XI), 5th European Congress on Computational Mechanics (ECCM V), 6th European Congress on Computational Fluid Dynamics (ECFD VI). World Congress on Computational Mechanics (WCCM-14), July 20-25, Barcelona, Spain, ISBN 978-84-942844-7-2, 2014.


Mechanical FEM simulations are used to compute the stresses and strains arising in the implant and the bone structure. Based on the results of the FEM simulations, new therapeutic approaches for revision surgery are developed. With the help of optimisation algorithms, a blue print of the mechanically optimal configuration of the cancellous bone transplantation is computed to achieve fracture fusion. Using these results the surgeon will be able to use a targeted approach with surgical intervention only in those areas of the non union where load peaks of the bone-implant system occur. With iterative automated optimisations and mechanical simulations we generate also an patient specific implant model. The process integrates the biomechanical needs,i.e. optimal neutralisation of torsion loads, and the anatomical needs, i.e. minimally invasive surgical technique, into the implant.

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Deutsches Forschungszentrum für Künstliche Intelligenz
German Research Center for Artificial Intelligence