Analysis on injury of vulnerable road users in traffic accidents with Japan Trauma Data Bank

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  • ITO Daisuke
    Graduate School of Engineering, Nagoya University
  • MIZUNO Koji
    Graduate School of Engineering, Nagoya University
  • SAITOH Daizoh
    Department of Traumatology and Critical Care Medicine, National Defense Medical College Division of Traumatology, Research Institute, National Defense Medical College

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Other Title
  • JTDBを用いた歩行者、自転車乗員の傷害発生に関する分析
  • JTDB オ モチイタ ホコウシャ 、 ジテンシャ ジョウイン ノ ショウガイ ハッセイ ニ カンスル ブンセキ

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Abstract

In Japan, a half of fatalities in traffic accident is vulnerable road user （VRU） such as pedestrian and cyclist. Therefore, the countermeasure on protection of VRU is essential for decrease the number of traffic fatalities and casualties in Japan. In this study, injury trends of pedestrian and cyclist were investigated by using Japan Trauma Data Bank （JTDB）. Especially, injuries in head and lower extremity which occur frequently in the accidents were analyzed by age and sex groups. The tendency that the percentage of head injury was the highest in JTDB was the same as that in traffic accident statistics reported by the National Police Agency. On the other hand, frequency of occurrence of pelvic injury, which has not ever been sufficiently discussed in pedestrian protection performance test and car body development, was high. The data showed that crash type （pedestrian or cyclist） and patient age affected injury location and pattern. Cyclist had a higher risk of femur fracture than pedestrian. The number of hemorrhagic brain injury and femoral neck fracture increased as patient age group became older. In conclusion, we showed sites frequently suffering from trauma in traffic accident involving VRU, which is important information for development of regulation and countermeasure to protect VRU.

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