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正常手関節における3次元力学的解析 : 剛体バネモデルを用いた理論的解析

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Please use this identifier to cite or link to this item:https://doi.org/10.11501/3137057

Title: 正常手関節における3次元力学的解析 : 剛体バネモデルを用いた理論的解析
Other Titles: Three-dimensional biomechanical analysis of normal wrist joint : Theoretical analysis using a rigid body spring model
Authors: 岩崎, 倫政1 Browse this author →KAKEN DB
Authors(alt): Iwasaki, Norimasa1
Keywords: 手関節
生体力学的解析
剛体バネモデル
wrist joint
biomechanical analysis
rigid body spring model
Issue Date: 25-Mar-1998
Abstract: Biomechanical analysis of normal wrist joint was performed using a three-dimensional rigid body spring model technique. Ten wrist theoretical models were created from the normal anatomical data of each of the ten cadaveric wrists. In this technique,the bones are considered to be rigid bodies interposed by series of springs simulating articular cartilage and constraining ligaments. The carpal bone displacement and the joint forces were determined under the specific load assuming a grasp position. Joint reaction forces were calculated according to the deformation of each spring element. The joint force transmission ratio (%) across the radio-ulno-carpal joint was distributed with 44% at the radio“scaphoid joint,31 % at the radio-lunate joint and 25% at the triangular fibrocartilage. The ratio through the midcarpal joint was the highest at the luno-capitate joint.The most important ligaments in tenns of load transmission were the palmar radio-lunate,th e dorsal radio-triquetral and the dorsal scapho-lunate ligaments. In the analysis of the carpal kinematics,th e carpal bones in the proximal row tended to be displaced ulnarly. Therefore,those ligaments are considered to play an important role in preventing the ulnar translation of the carpal bones. The results derived from the current theoretical analysis are consistent with other experimental values. Following appropriate validation,this model and analysis technique have the possibility of direct clinical application.
正常新鮮屍体上肢のCT画像データを基に手関節3次元剛体バネモデルを作製し,正常手関節における力学的解析を行った。応力分布比(%)は,𣓤骨手根関節および尺骨手根裂隙において,𣓤骨舟状関節で44%,𣓤骨月状関節で31%,三角線維軟骨では25%であった。手線中央関節においては,舟状大菱形小菱形関節で27%,舟状有頭関節では23%,月状有頭関節において34%,三角有鉤関節で16%であった。各靭帯の張力分布に関しては,掌側では𣓤骨月状靭帯,背側では𣓤骨三角靭帯において最大であり,正常手関節においては,これらの靭帯が力学的に最も重要であると考えられた。さらに,手根骨のkinematcsデータより,これらの靭帯は舟状骨および月状骨の尺側への変位を防ぐ機能的役割を担っていると考えられた。本研究では3次元理論的モデルを用いることにより,正常手関節全体の関節応力,靭帯張力および手根骨のknematicsに関する解析を行うことが可能であった。得られた解析結果は過去の実験結果とも良く相関しており,本解析法は十分に信頼性のおけるものと考えられた。
Conffering University: 北海道大学
Degree Report Number: 甲第4341号
Degree Level: 博士
Degree Discipline: 医学
Type: theses (doctoral)
URI: http://hdl.handle.net/2115/52188
Appears in Collections:学位論文 (Theses) > 博士 (医学)

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