Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 03, 2017 - September 06, 2017
The purpose of this study is to clarify influence of brain atrophy due to aging on the relative displacement between skull and brain by using the physical head-neck model during rotational impact. The physical head-neck model consists of skull part, brain part, neck part and head-neck joint. The shape of skull and brain part was based on real-shaped three dimensional CAD data constructed by CT/MRI images. We constructed two different shaped brain models. One model has the brain shape of young adults reproduced (adult physical head-neck model), and the other is model whose volume is reduced by 10% than it (aging physical head-neck model). The same level of rotational impact was given to these models and measured relative displacement between skull and brain occurring in each model. The relative displacement between skull and brain is calculated from the position data of each marker photographed by two high-speed cameras. As a result of that, it was found that the relative displacement between skull and brain is larger in the aging physical head-neck model than in the adult physical head-neck model. Therefore it was revealed that brain atrophy due to aging increases the relative displacement between skull and brain when rotational impact is applied to the head.
