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ID 53523
JaLCDOI
フルテキストURL
69_3_165.pdf 4.43 MB
著者
Sarai, Takaaki Division of Industrial Innovation Sciences, Graduate School of Natural Science and Technology, Okayama University
Tokumoto, Akihiro Fujikura Co., Ltd.
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.
キーワード
biomechanics
sideways fall
femoral neck
greater trochanter
impulsive stress wave
Amo Type
Original Article
出版物タイトル
Acta Medica Okayama
発行日
2015-06
69巻
3号
出版者
Okayama University Medical School
開始ページ
165
終了ページ
171
ISSN
0386-300X
NCID
AA00508441
資料タイプ
学術雑誌論文
言語
英語
著作権者
CopyrightⒸ 2015 by Okayama University Medical School
論文のバージョン
publisher
査読
有り
PubMed ID
Web of Science KeyUT