The importance of accurate muscle modelling for biomechanical analyses: a case study with a lizard skull

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dc.contributor.authorGröning, F.
dc.contributor.authorJones, M.
dc.contributor.authorCurtis, N.
dc.contributor.authorHerrel, A.
dc.contributor.authorO'Higgins, P.
dc.contributor.authorEvans, S.
dc.contributor.authorFagan, M.
dc.date.issued2013
dc.description.abstractComputer-based simulation techniques such as multi-body dynamics analysis are becoming increasingly popular in the field of skull mechanics. Multi-body models can be used for studying the relationships between skull architecture, muscle morphology and feeding performance. However, to be confident in the modelling results, models need to be validated against experimental data, and the effects of uncertainties or inaccuracies in the chosen model attributes need to be assessed with sensitivity analyses. Here, we compare the bite forces predicted by a multi-body model of a lizard (Tupinambis merianae) with in vivo measurements, using anatomical data collected from the same specimen. This subject-specific model predicts bite forces that are very close to the in vivo measurements and also shows a consistent increase in bite force as the bite position is moved posteriorly on the jaw. However, the model is very sensitive to changes in muscle attributes such as fibre length, intrinsic muscle strength and force orientation, with bite force predictions varying considerably when these three variables are altered. We conclude that accurate muscle measurements are crucial to building realistic multi-body models and that subject-specific data should be used whenever possible.
dc.description.statementofresponsibilityFlora Gröning, Marc E. H. Jones, Neil Curtis, Anthony Herrel, Paul O'Higgins, Susan E. Evans and Michael J. Fagan
dc.identifier.citationJournal of the Royal Society Interface, 2013; 10(84):20130216-1-20130216-10
dc.identifier.doi10.1098/rsif.2013.0216
dc.identifier.issn1742-5689
dc.identifier.issn1742-5662
dc.identifier.orcidJones, M. [0000-0002-0146-9623]
dc.identifier.urihttp://hdl.handle.net/2440/87019
dc.language.isoen
dc.publisherThe Royal Society
dc.rights© 2013 The Authors
dc.source.urihttps://doi.org/10.1098/rsif.2013.0216
dc.subjectbite force; multi-body dynamics analysis; skull; feeding; validation; Tupinambis
dc.titleThe importance of accurate muscle modelling for biomechanical analyses: a case study with a lizard skull
dc.typeJournal article
pubs.publication-statusPublished

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