Towards a patient-specific estimation of intra-operative femoral fracture risk |
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| Authors: | L Esposito P Bifulco P Gargiulo MK Gíslason M Cesarelli L Iuppariello |
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| Institution: | 1. Department of Structures for Engineering and Architecture (DiSt), Polytechnic School - College of Engineering, University of Naples Federico II, Naples, Italy;2. luca.esposito@unina.it;4. Department of Electric Engineering and Information Technologies (DIETI), Polytechnic School - College of Engineering, University of Naples Federico II, Naples, Italy;5. Institute for Biomedical and Neural Engineering, Department of Science, Landspítali University Hospital, University of Iceland, Reykjavik, Iceland |
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| Abstract: | AbstractTotal Hip Arthroplasty requires pre-surgical evaluation between un-cemented and cemented prostheses. A Patient with intra-operative periprosthetic fracture and another with a successful outcome were recruited, and their finite element models were constructed by processing CT data, assuming elastic-plastic behavior of the bone as function of the local density. To resemble the insertion of the prosthesis into the femur, a fictitious thermal dilatation is applied to the broach volume. Strain-based fracture risk factor is estimated, depicting results in terms of the total mechanical strain expressed using a simple “traffic lights” color code to provide immediate, concise, and intelligible pre-operative information to surgeons. |
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| Keywords: | Total hip arthroplasty intra-operative femur fracture risk finite element model bone elastic-plastic behavior |
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