アメリカンフットボールにおける脳震盪の発症リスクの評価システムの開発

摘要

アメリカンフットボールは頭部同士の接触が頻繁に起 き脳震盪を誘発しやすい.脳震盪は頭部に外力が加わるこ とによる一過性の意識障害であり，MRIやCTなどで損傷 箇所を特定できない.また試合現場では診断テストを試合 前と受傷後に行い脳震盪を診断しているが，選手に負担が かかるため客観的に判断する手法が必要となる.%The purpose of this study is estimating the brain concussion risk based on the game video of collision accident. The collision motion of collegiate football players is reproduced based on the video by using motion analysis. Then, collision analysis is performed by using two helmeted finite element (FE) human head models and brain concussion risk is evaluated by ten mechanical parameters generated inside the skull caused by the collision. The results show that the brain injury risk can be estimated by brain concussion evaluation parameter. In this study, two cases (Injury case, No injury case) are analyzed for researching the cause in concussion . In the future many cases need to be analyzed for improvement of the reliability of the estimation.