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    Pre-Collapse Stress Redistributions in Femoral Head Osteonecrosis—A Three-Dimensional Finite Element Analysis

    Source: Journal of Biomechanical Engineering:;1983:;volume( 105 ):;issue: 002::page 171
    Author:
    T. D. Brown
    ,
    G. L. Hild
    DOI: 10.1115/1.3138402
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Three-dimensional finite element analysis is used to explore the influence of several lesion characteristics upon mechanical stress distributions in segmentally necrotic human femoral heads. Variables studied parametrically included apparent modulus deficits within the lesion proper, as well as the depth, width, and location of the infarcted head regions. The detailed patterns of stress redistribution were complex and were found to be a strong function of the specific lesion characteristics. The salient phenomenon, however, was one of preferential load uptake by the stiffer bone surrounding the lesion. Since computed stress reductions within the infarctions were usually much smaller than experimentally observed strength reductions, the data suggest a strong tendency for an elevated incidence of trabecular fatigue fractures in the affected regions.
    keyword(s): Stress , Finite element analysis , Collapse , Fatigue , Fracture (Process) AND Bone ,
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      Pre-Collapse Stress Redistributions in Femoral Head Osteonecrosis—A Three-Dimensional Finite Element Analysis

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/96806
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    • Journal of Biomechanical Engineering

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    contributor authorT. D. Brown
    contributor authorG. L. Hild
    date accessioned2017-05-08T23:15:01Z
    date available2017-05-08T23:15:01Z
    date copyrightMay, 1983
    date issued1983
    identifier issn0148-0731
    identifier otherJBENDY-25739#171_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/96806
    description abstractThree-dimensional finite element analysis is used to explore the influence of several lesion characteristics upon mechanical stress distributions in segmentally necrotic human femoral heads. Variables studied parametrically included apparent modulus deficits within the lesion proper, as well as the depth, width, and location of the infarcted head regions. The detailed patterns of stress redistribution were complex and were found to be a strong function of the specific lesion characteristics. The salient phenomenon, however, was one of preferential load uptake by the stiffer bone surrounding the lesion. Since computed stress reductions within the infarctions were usually much smaller than experimentally observed strength reductions, the data suggest a strong tendency for an elevated incidence of trabecular fatigue fractures in the affected regions.
    publisherThe American Society of Mechanical Engineers (ASME)
    titlePre-Collapse Stress Redistributions in Femoral Head Osteonecrosis—A Three-Dimensional Finite Element Analysis
    typeJournal Paper
    journal volume105
    journal issue2
    journal titleJournal of Biomechanical Engineering
    identifier doi10.1115/1.3138402
    journal fristpage171
    journal lastpage176
    identifier eissn1528-8951
    keywordsStress
    keywordsFinite element analysis
    keywordsCollapse
    keywordsFatigue
    keywordsFracture (Process) AND Bone
    treeJournal of Biomechanical Engineering:;1983:;volume( 105 ):;issue: 002
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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