Modelling of intracranial behaviour on occiput impact in judo

Abstract

Acute subdural hematoma (ASDH) sometimes occurred in judo because of the bridging veins’ failure by rotation of the brain in the skull. However, the relationship between intracranial behaviour and the motion of the body on occiput impact has not yet been clarified. In this study, we developed an intracranial mechanical model based on multibody dynamics and compared it with experimental results. The results show the importance of modelling bridging veins and cerebral spinal fluid to the relative displacement between brain and skull. The proposed model will contribute to accident analyses or the optimum design of supporting devices.

Keywords:

• Numerical simulation
• multibody dynamics
• impact biomechanics
• sports injury
• acute subdural hematoma
• judo

Acknowledgements

The numerical simulations were carried out under the Academic Open Program (AOP) supported by Altair Engineering.