ID | 53523 |
JaLCDOI | |
フルテキストURL | |
著者 |
Sarai, Takaaki
Division of Industrial Innovation Sciences, Graduate School of Natural Science and Technology, Okayama University
Tokumoto, Akihiro
Fujikura Co., Ltd.
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抄録 | Fall accidents are a common cause of femoral fracture in the elderly. The greater trochanter of the femur is often subjected to impact loading by a sideways fall, and thus it is worth studying the impulsive stress waves propagating in the femur. In this study, the impulsive stress was analyzed by the dynamic finite element method using a 3-dimensional model of the femur, and the influence of the fall configuration on the stress was discussed. The stress was concentrated around the femoral neck during the propagation of the stress wave, and the tensile maximum principal stress changed into compressive minimum principle stress on the anterior and medial sides of the neck. On the other hand, the compressive minimum principal stress changed into tensile maximum principle stress on the lateral side of the neck. The largest maximum principal stress during the impact loading was always larger in the neck than in the impact region. The largest absolute value of the minimum principal stress was found in the neck or the impact region depending on the fall configuration. The largest absolute values of the maximum and minimum principal stress were nearly equal, indicating that the bone fracture due to the tensile stress may occur around the femoral neck.
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キーワード | biomechanics
sideways fall
femoral neck
greater trochanter
impulsive stress wave
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Amo Type | Original Article
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出版物タイトル |
Acta Medica Okayama
|
発行日 | 2015-06
|
巻 | 69巻
|
号 | 3号
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出版者 | Okayama University Medical School
|
開始ページ | 165
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終了ページ | 171
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ISSN | 0386-300X
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NCID | AA00508441
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資料タイプ |
学術雑誌論文
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言語 |
英語
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著作権者 | CopyrightⒸ 2015 by Okayama University Medical School
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論文のバージョン | publisher
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査読 |
有り
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PubMed ID | |
Web of Science KeyUT |