Influences of Newly Formed Woven Bone on Tissue Stresses in Rat Caudal Vertebrae Subjected to Mechanical Loading : A Study Based on Morphological Measurement Using a Micro-CT and Computational Stress Analysis
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概要
- 論文の詳細を見る
Bone tissue stresses in mechanically loaded vertebrae were computationally investigated in order to reveal the influences of adaptive remodeling/modeling on stress distribution. Morphological alteration of the rat fifth caudal vertebrae was periodically and non-invasively measured with a microcomputed tomography (micro-CT). Von Mises stresses were calculated by using a finite element analysis (FEA) together with rigid-body spring models based on the consecutive micro-CT images. Median cross-sectional area periodically increased in the loaded rats depending on the duration of stimuli, which was caused by periosteal woven bone formation. FEA including the newly formed bone demonstrated that the loaded vertebrae showed the lower stress levels compared with non-loaded one. Averaged stress of the offset-loaded rat was markedly symmetry between ventral and dorsal sides under offset loading condition, while that of the non-loaded rat indicated asymmetry. Stress analyses suggested that the loaded vertebrae would adapt to the daily mechanical loading by depositing and calcifying woven bone over periosteum.
- 一般社団法人日本機械学会の論文
- 2002-06-15
著者
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Iwamoto Y
Graduate School Of Medical Sciences Kyushu Univ.
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Iwamoto Yukihide
国立病院機構大阪医療センター 近畿がんセンター整形外科
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Iwamoto Yukihide
吉塚林病院 整形外科
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Iwamoto Y
Department Of Orthopedic Surgery Graduate School Of Medical Sciences Kyushu University
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Iwamoto Yukihide
Department Of Orthopaedic Surgery Graduate School Of Medical Sciences Kyushu University
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Miura Hiromasa
Department Of Orthopaedic Surgery Kyushu University Faculty Of Medicine
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Murakami Teruo
Department Of Intelligent Machinery And Systems Faculty Of Engineering Kyushu University
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HIGAKI HIDEHIKO
Department of Mechanical Engineering, Faculty of Engineering, Kyushu Sangyo University
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Mawatari Taro
Department Of Orthopaedic Surgery Clinical Medicine Graduate School Of Medical Sciences Kyushu Unive
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Kurata Kosaku
Department Of Intelligent Machinery And Systems Graduate School Of Engineering Kyushu University
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Kurata Kosaku
Department Of Biorobotics Faculty Of Engineering Kyushu Sangyo University
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Higaki Hidehiko
Department Of Biorobotics Faculty Of Engineering Kyushu Sangyo University
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Iwamoto Yukihide
Department Of Orthopaedic Surgery Clinical Medicine Graduate School Of Medicine Kyushu University
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Iwamoto Yukihide
Department Of Orthopaedic Surgery Clinical Medicine Graduate School Of Medical Sciences Kyushu Unive
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