In order to elucidate the mechanism of accidents and abuse from head injury cases, it is essential to conduct experiments and measure the acceleration and angular velocity of the head. It is also important to analyze the behavior of the human body at the time of injury, as measuring acceleration and angular velocity alone is not sufficient. Slight differences in body behavior and posture result in different injury tendencies. In this paper, we explain the importance of behavior analysis by using our research on infant falls as an example to show how the behavior of the human body during falls affects head injuries.
