Estimation of local strain of Achilles tendon during exercise with individual structure geometry and tendon force date by finite element analysis

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  • 個人のアキレス腱形状と筋力データを用いた有限要素シミュレーションによる運動時のアキレス腱局所変形の推定
  • コジン ノ アキレスケン ケイジョウ ト キンリョク データ オ モチイタ ユウゲン ヨウソ シミュレーション ニ ヨル ウンドウジ ノ アキレスケン キョクショ ヘンケイ ノ スイテイ

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Abstract

<p>The purposes of this study were to analyze local strain of the Achilles tendon during exercise by finite element analysis with individual structural geometry and force data. Tetrahedral mesh models of Achilles tendon for finite element analysis were made from cross-sectional magnetic resonance images of eighteen subjects. The Achilles tendon deformation by maximal voluntary contraction was simulated by large deformation non-linear static analysis. Strain concentration was clearly observed at the portion from the proximal 20% to 50% length. The maximum principal strain was 13.5 ± 5.57 %. This portion was consistent with the highest risk portion of Achilles tendon rupture and /or inflammation related to exercises. Thus these results suggest that the evaluation of this portion would be important to increase the accuracy of estimation on the risk of Achilles tendon disorders. Also, the correlation analyses showed the risk is significantly correlated to the length of Achilles tendon.</p>

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