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On the failure init...
On the failure initiation in the proximal human femur under simulated sideways fall
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- Bahaloo, Hassan, 1983- (author)
- Faculty of Industrial Engineering, Mechanical Engineering and Computer Science, School of Engineering and Natural Sciences, University of Iceland, Reykjavik, Iceland; Institute for Biomechanics, ETH-Zürich, Zurich, Switzerland
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- Enns-Bray, William S. (author)
- Institute for Biomechanics, ETH-Zürich, Zurich, Switzerland
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- Fleps, Ingmar (author)
- Institute for Biomechanics, ETH-Zürich, Zurich, Switzerland
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- Ariza, Oscar (author)
- Institute for Biomechanics, ETH-Zürich, Zurich, Switzerland; Orthopaedic and Injury Biomechanics Group, University of British Columbia, Vancouver, Canada; Centre for Hip Health and Mobility, University of British Columbia, Vancouver, Canada; Department of Mechanical Engineering, University of British Columbia, Vancouver, Canada
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- Gilchrist, Seth (author)
- Orthopaedic and Injury Biomechanics Group, University of British Columbia, Vancouver, Canada; Centre for Hip Health and Mobility, University of British Columbia, Vancouver, Canada; Department of Mechanical Engineering, University of British Columbia, Vancouver, Canada
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- Soyka, R. Widmer (author)
- Institute for Biomechanics, ETH-Zürich, Zurich, Switzerland
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- Guy, Pierre (author)
- Centre for Hip Health and Mobility, University of British Columbia, Vancouver, Canada; Department of Orthopedics, University of British Columbia, Vancouver, Canada
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- Palsson, Halldor (author)
- Faculty of Industrial Engineering, Mechanical Engineering and Computer Science, School of Engineering and Natural Sciences, University of Iceland, Reykjavik, Iceland
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- Ferguson, Stephen J. (author)
- Institute for Biomechanics, ETH-Zürich, Zurich, Switzerland
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- Cripton, Peter A. (author)
- Orthopaedic and Injury Biomechanics Group, University of British Columbia, Vancouver, Canada; Centre for Hip Health and Mobility, University of British Columbia, Vancouver, Canada; Department of Mechanical Engineering, University of British Columbia, Vancouver, Canada; Department of Orthopedics, University of British Columbia, Vancouver, Canada
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- Helgason, Benedikt (author)
- Institute for Biomechanics, ETH-Zürich, Zurich, Switzerland; School of Science and Engineering, Reykjavik University, Reykjavik, Iceland
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(creator_code:org_t)
- 2017-11-27
- 2018
- English.
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In: Annals of Biomedical Engineering. - : Springer. - 0090-6964 .- 1573-9686. ; 46, s. 270-283
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- The limitations of areal bone mineral density measurements for identifying at-risk individuals have led to the development of alternative screening methods for hip fracture risk including the use of geometrical measurements from the proximal femur and subject specific finite element analysis (FEA) for predicting femoral strength, based on quantitative CT data (qCT). However, these methods need more development to gain widespread clinical applications. This study had three aims: To investigate whether proximal femur geometrical parameters correlate with obtained femur peak force during the impact testing; to examine whether or not failure of the proximal femur initiates in the cancellous (trabecular) bone; and finally, to examine whether or not surface fracture initiates in the places where holes perforate the cortex of the proximal femur. We found that cortical thickness around the trochanteric-fossa is significantly correlated to the peak force obtained from simulated sideways falling (R 2 = 0.69) more so than femoral neck cortical thickness (R 2 = 0.15). Dynamic macro level FE simulations predicted that fracture generally initiates in the cancellous bone compartments. Moreover, our micro level FEA results indicated that surface holes may be involved in primary failure events.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Ortopedi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Orthopaedics (hsv//eng)
Keyword
- Proximal femur
- Sideways falling
- Finite element method
- Holes
- Trochanteric-fossa cortical shell thickness
- Fracture
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Bahaloo, Hassan, ...
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Enns-Bray, Willi ...
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Fleps, Ingmar
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Ariza, Oscar
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Gilchrist, Seth
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Soyka, R. Widmer
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show more...
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Guy, Pierre
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Palsson, Halldor
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Ferguson, Stephe ...
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Cripton, Peter A ...
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Helgason, Benedi ...
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- About the subject
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- MEDICAL AND HEALTH SCIENCES
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MEDICAL AND HEAL ...
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and Clinical Medicin ...
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and Orthopaedics
- Articles in the publication
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Annals of Biomed ...
- By the university
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Luleå University of Technology