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Full-Text Articles in Physical Sciences and Mathematics
Validation Experiments On Finite Element Models Of An Ostrich (Struthio Camelus) Cranium, Andrew R. Cuff, Jen A. Bright, Emily J. Rayfield
Validation Experiments On Finite Element Models Of An Ostrich (Struthio Camelus) Cranium, Andrew R. Cuff, Jen A. Bright, Emily J. Rayfield
School of Geosciences Faculty and Staff Publications
The first finite element (FE) validation of a complete avian cranium was performed on an extant palaeognath, the ostrich (Struthio camelus). Ex-vivo strains were collected from the cranial bone and rhamphotheca. These experimental strains were then compared to convergence tested, specimen-specific finite element (FE) models. The FE models contained segmented cortical and trabecular bone, sutures and the keratinous rhamphotheca as identified from micro-CT scan data. Each of these individual materials was assigned isotropic material properties either from the literature or from nanoindentation, and the FE models compared to the ex-vivo results. The FE models generally replicate the location …
Finite Element Modelling Predicts Changes In Joint Shape And Cell Behaviour Due To Loss Of Muscle Strain In Jaw Development, Lucy H. Brunt, Joanna L. Norton, Jen A. Bright, Emily J. Rayfield, Chrissy L. Hammond
Finite Element Modelling Predicts Changes In Joint Shape And Cell Behaviour Due To Loss Of Muscle Strain In Jaw Development, Lucy H. Brunt, Joanna L. Norton, Jen A. Bright, Emily J. Rayfield, Chrissy L. Hammond
School of Geosciences Faculty and Staff Publications
Abnormal joint morphogenesis is linked to clinical conditions such as Developmental Dysplasia of the Hip (DDH) and to osteoarthritis (OA). Muscle activity is known to be important during the developmental process of joint morphogenesis. However, less is known about how this mechanical stimulus affects the behaviour of joint cells to generate altered morphology. Using zebrafish, in which we can image all joint musculoskeletal tissues at high resolution, we show that removal of muscle activity through anaesthetisation or genetic manipulation causes a change to the shape of the joint between the Meckel's cartilage and Palatoquadrate (the jaw joint), such that the …