Parametric analysis in a FEA model to understanding basal urodeles


In vertebrate palaeontology, some previous works joined a Parametric Analysis and FEA to test the behaviour and sensitivity of different parameters such as the material properties of the biological tissue, the homogeneity or heterogeneity of the bone, the sutures, or the influence of the loads applied. Previously we used thiks type of analysis to test how the variation of the original geometry affects the biomechanical performance in the eyes of an Edingerella madagascariensis to study the implications of orbit Position and size diversity of early amphibians: http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0131320

Now, Our new joined paper “Cranial biomechanics in basal urodeles: the Siberian salamander (Salamandrella keyserlingii) and its evolutionary and developmental implications” with the researchers Zupeng Zhou, Josep Fortuny & Pavel P. Skutschas has been published in Scientific Reports. The work is analysing a 3D cranial biomechanics of the adult Salamandrella keyserlingii  under different tissue properties and ossification sequences of the cranial skeleton to unravel that:

  1. Mechanical properties of tissues (as bone, cartilage or connective tissue) imply a consensus between the stiffness required to perform a function versus the fixation (and displacement) required with the surrounding skeletal elements.
  2. Changes on the ossification pattern, producing fontanelles as a result of bone loss or failure to ossify, represent a trend toward simplification potentially helping to distribute stress through the skull, but may also imply a major destabilization of the skull.
  3. Bone loss may be originated due to biomechanical optimization and potential reduction of developmental costs.
  4. Hynobiids are excellent models for biomechanical reconstruction of extinct early urodeles.

41598_2017_10553_Fig4_HTML.jpg

Zhou, Z. et al. “Cranial biomechanics in basal urodeles: the Siberian salamander (Salamandrella keyserlingii) and its evolutionary and developmental implications”. Scientific Reports. 2017. More info at: https://www.nature.com/articles/s41598-017-10553-1

 

 

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