What is the recommended size of a Volume of Interest for cancellous bone ? A skeleton-based study
TypeArticles dans des revues avec comité de lecture
The study of the bone fracture is an important issue for oste- oporosis and car safety. The behavior of cancellous bone is strongly linked to the micro-architecture, the strain rate (Prot et al. 2015), and the specimen size Harrison & McHugh 2010). Numerical models are used in order to simulate the viscoelas- tic behavior up to the point of fracture propagation in cancellous bone. Finite element method (FEM) models based on micro-CT scans are currently the most popular approach. However, the results are dependent on the specimen size and the mesh den- sity, in addition to which the fracture analysis is time-consum- ing (Hambli 2013). Moreover, the variable architecture within a typical specimen limits the minimum sample size that will still provide reasonable architectural parameter values in comparison with the full specimen size. Indeed, a BV/TV variation up to 20% was found in the same specimen (ϕ = 7.85 mm) (Stauber et al. 2014). Skeleton-based models have already shown a great poten- tial for the efficient simulation of bone behavior and fracture. Cancellous bone geometry is based on nodes, beams, and plates (Stauber & Müller 2006), which is straightforward to implement from a skeleton. In this study, the effect of the Volume of Interest (VOI) size, within a sample, on the evaluation of cancellous bone architec- tural parameters from the skeletonized model will be presented. The aim was to furnish recommendations for the sample size for further numerical simulations.
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Fracture characterization in cancellous bone specimens via surface difference evaluation of 3D registered pre- and post-compression micro-CT scans PROT, Marianne; DUBOIS, Guillaume; CLOETE, Trevor John; SALETTI, Dominique; LAPORTE, Sébastien (Taylor & Francis, 2015)In recent years, increasingly stringent passenger vehicle safety requirements have led to a renewed interest in the fracture properties of bone. It has been shown that can- cellous bone architecture is strongly linked ...
PROT, Marianne; CLOETE, Trevor John; SALETTI, Dominique; LAPORTE, Sébastien (Taylor and Francis, 2014)Not applicable
The behavior of cancellous bone from quasi-static to dynamic strain rates with emphasis on the intermediate regime PROT, Marianne; CLOETE, Trevor John; SALETTI, Dominique; LAPORTE, Sébastien (Elsevier, 2016)Previous studies, conducted using quasi-static and dynamic compression tests, have shown that the mechanical strength of cancellous bone is strain rate dependent. However, these studies have not included the intermediate ...
A Tandem Momentum Trap for Dynamic Specimen Recovery During Split Hopkinson Pressure Bar Testing of Cancellous Bone PROT, Marianne; CLOETE, Trevor John (Springer, 2016)A novel method for dynamic specimen recovery using tandem momentum traps on an otherwise standard split Hopkinson pressure bar, is presented. The method is based on a pair of concentric tubes that are impedance matched to ...
Links between microstructural properties of cancellous bone and its mechanical response to different strain rates. PROT, Marianne; SALETTI, Dominique; PATTOFATTO, Stéphane; BOUSSON, Valérie; LAPORTE, Sébastien (Taylor and Francis, 2013)Not applicable