スポーツ中に発生する頭部傷害の事故解析と様々な症状の発症予測

（アメリカンフットボールの症例解析を基にして）

抄録

The collision accident in collegiate football game was simulated based on the game video and the concussive impacts on the head were analyzed. First, the collision motions of players were reproduced based on the video by using MADYMO software, and the translational and rotational velocities, relative position and contact location of the struck and the striking players' heads just before the collision were calculated. Then the data obtained were input to two helmeted finite element head models as the initial condition, and the brain injury risk was evaluated. In the present study, 2 accident cases concussion suspected were analyzed; The results showed that the all peak values belonged to the dangerous range that may cause concussion and were consistent with the diagnosis of the medical team doctor. It means that the brain injury risk can be estimated by the reconstructed simulation of the game video and finite element analysis. To our knowledge, this study is the first attempt in Japan to estimate the brain injury risk systematically by a combination of game video analysis which is originally introduced for the players' health care and finite element analysis by helmeted human head model.