An anatomical region-based statistical shape model of the human femur

We present a workflow for producing a statistical shape model (SSM) of the femur with automatically defined regions resembling general anatomic features. Explicitly defined regions enforce correspondence of anatomical features, and allow the shapes of regions to be analysed independently if needed....

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Bibliographic Details
Published inComputer Methods in Biomechanics and Biomedical Engineering: Imaging & Visualization Vol. 2; no. 3; pp. 176 - 185
Main Authors Zhang, Ju, Malcolm, Duane, Hislop-Jambrich, Jacqui, Thomas, C. David L., Nielsen, Poul M.F.
Format Journal Article
LanguageEnglish
Japanese
Published Taylor & Francis 03.07.2014
Informa UK Limited
Subjects
femur morphology
model generation
musculoskeletal modelling
statistical modelling
statistical shape modelling
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Summary:We present a workflow for producing a statistical shape model (SSM) of the femur with automatically defined regions resembling general anatomic features. Explicitly defined regions enforce correspondence of anatomical features, and allow the shapes of regions to be analysed independently if needed. A training set of manually segmented femur surfaces are partitioned according to Gaussian curvature. Partitioned regions across the training set are then grouped using mean-shift clustering to identify the most stable regions into which surfaces are divided. Reference piecewise parametric meshes are designed for and fitted to each region, and used to train regional SSMs through fitting-training iterations. Fitted region meshes are assembled into full femur meshes for training a whole femur region-based SSM (rSSM). Partitioning, clustering and shape modelling results are presented for 41 femurs. In comparison to a non-regional SSM, the rSSM was more efficient and correspondent in its approximation of unseen femurs.
ISSN:2168-1163
2168-1171
DOI:10.1080/21681163.2013.878668