A novel videography method for generating crack-extension resistance curves in small bone samples

Assessment of bone quality is an emerging solution for quantifying the effects of bone pathology or treatment. Perhaps one of the most important parameters characterising bone quality is the toughness behaviour of bone. Particularly, fracture toughness, is becoming a popular means for evaluating bon...

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Bibliographic Details
Published in:PloS one 2013-02, Vol.8 (2), p.e55641-e55641
Main Authors: Katsamenis, Orestis L, Jenkins, Thomas, Quinci, Federico, Michopoulou, Sofia, Sinclair, Ian, Thurner, Philipp J
Format: Article
Language:English
Subjects:
Adult
Aged
Aged, 80 and over
Animals
Bioengineering
Biology
Biomechanical Phenomena
Biomechanics
Bones
Crack propagation
Engineering
Female
Femoral Fractures - physiopathology
Femur - physiology
Fracture mechanics
Fracture toughness
Fractures, Bone - metabolism
Humans
Materials fatigue
Measurement techniques
Mechanical properties
Medical research
Medicine
Methods
Middle Aged
Models, Biological
Physics
Propagation
Quality assessment
Rats
Research methodology
Strain energy release rate
Stress intensity factors
Stress, Mechanical
Studies
Synchrotrons
Tensile Strength
Tibia - physiology
Tomography, X-Ray Computed
Tracking
Videography
Videotape Recording - methods
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Summary:Assessment of bone quality is an emerging solution for quantifying the effects of bone pathology or treatment. Perhaps one of the most important parameters characterising bone quality is the toughness behaviour of bone. Particularly, fracture toughness, is becoming a popular means for evaluating bone quality. The method is moving from a single value approach that models bone as a linear-elastic material (using the stress intensity factor, K) towards full crack extension resistance curves (R-curves) using a non-linear model (the strain energy release rate in J-R curves). However, for explanted human bone or small animal bones, there are difficulties in measuring crack-extension resistance curves due to size constraints at the millimetre and sub-millimetre scale. This research proposes a novel "whitening front tracking" method that uses videography to generate full fracture resistance curves in small bone samples where crack propagation cannot typically be observed. Here we present this method on sharp edge notched samples (
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0055641