Computer assisted evaluation of plate osteosynthesis of diaphyseal femur fracture considering interfragmentary movement: A finite element study
Biomedizinische Technik, ISSN: 0013-5585, Vol: 62, Issue: 3, Page: 245-255
2017
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- 29Captures
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Article Description
A semi-automated workflow for evaluation of diaphyseal fracture treatment of the femur has been developed and implemented. The aim was to investigate the influence of locking compression plating with diverse fracture-specific screw configurations on interfragmentary movements (IFMs) with the use of finite element (FE) analysis. Computed tomography (CT) data of a 22-year-old non-osteoporotic female were used for patient specific modeling of the inhomogeneous material properties of bone. Hounsfield units (HU) were exported and assigned to elements of a FE mesh and converted to mechanical properties such as the Young's modulus followed by a linear FE analysis performed in a semi-automated fashion. IFM on the near and far cortex was evaluated. A positive correlation between bridging length and IFM was observed. Optimal healing conditions with IFMs between 0.5 mm and 1 mm were found in a constellation with a medium bridging length of 80 mm with three unoccupied screw holes around the fracture gap. Usage of monocortical screws instead of bicortical ones had negligible influence on the evaluated parameters when modeling non-osteoporotic bone. Minimal user input, automation of the procedure and an efficient computation time ensured quick delivery of results which will be essential in a future clinical application.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85020426292&origin=inward; http://dx.doi.org/10.1515/bmt-2015-0176; http://www.ncbi.nlm.nih.gov/pubmed/27574854; https://www.degruyter.com/document/doi/10.1515/bmt-2015-0176/html; http://www.degruyter.com/view/j/bmte.2017.62.issue-3/bmt-2015-0176/bmt-2015-0176.xml; https://www.degruyter.com/view/j/bmte.2017.62.issue-3/bmt-2015-0176/bmt-2015-0176.xml
Walter de Gruyter GmbH
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