Abstract
The most serious head injury in judo is acute subdural hematoma (ASDH). ASDH occurs because of bridge vein's failure by rotation of brain in skull. Although ASDH is related to intracranial behavior, the relationship between intracranial behavior and motion of body is unclear. In this study, multibody dynamics model is developed to describe the intracranial behavior on occiput impact. This model is composed of 5 rigid bodies (brain, head, neck, torso and floor) and 2 joints at 1st and 7th cervical vertebrae. The intracranial model has the elastic and viscous elements of bridging veins, brain stem and arachnoid trabeculae and the contact springs and dampers of skull base, tentorium cerebella and skull. Moreover, the effects of cerebral spinal fluid are considered. Developed model was compared with the experimental results with cadaver and dummy, and the results showed the validity of the developed model.
