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Statistical modelling of the whole human femur incorporating geometric and material properties

Bryan, Rebecca, Mohan, P. Surya, Hopkins, Andrew, Galloway, Francis, Taylor, Mark and Nair, Prasanth B. (2010) Statistical modelling of the whole human femur incorporating geometric and material properties Medical Engineering & Physics, 32, (1), pp. 57-65. (doi:10.1016/j.medengphy.2009.10.008). (PMID:19932044).

Record type: Article


When analysing the performance of orthopaedic implants the vast majority of computational studies use either a single or limited number of bone models. The results are then extrapolated to the population as a whole, overlooking the inherent and large interpatient variability in bone quality and geometry. This paper describes the creation of a three dimensional, statistical, finite element analysis (FEA) ready model of the femur using principal component analysis. To achieve this a registration scheme based on elastic surface matching and a mesh morphing algorithm has been developed. This method is fully automated enabling registration and generation of high resolution models. The variation in both geometry and material properties was extracted from 46 computer tomography scans and captured by the statistical model. Analysis of mesh quality showed this was maintained throughout the model generation and sampling process. Reconstruction of the training femurs showed 35 eigenmodes were required for accurate reproduction. A set of unique, anatomically realistic femur models were generated using the statistical model, with a variation comparable to that seen in the population. This study illustrates a methodology with the potential to generate femur models incorporating material properties for large scale multi-femur finite element studies

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Published date: January 2010
Keywords: statistical model, principal component analysis, registration, femur, material property


Local EPrints ID: 143551
ISSN: 1350-4533
PURE UUID: 298fb895-a78d-4be3-9480-b390570d40bb

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Date deposited: 12 Apr 2010 10:59
Last modified: 18 Jul 2017 23:09

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Author: Rebecca Bryan
Author: P. Surya Mohan
Author: Andrew Hopkins
Author: Francis Galloway
Author: Mark Taylor
Author: Prasanth B. Nair

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