Head injuries

The brain doesnt fill the skull cavity completely. It is suspended in a chemical soup called cerebrospinal fluid, which nourishes the brain and serves as a shock absorber. If a child falls from a fast-moving scooter and hits a hard surface, such as the road, the brain is thrown against the inside of the skull. This causes bruising and swelling of the delicate tissues. Skull fractures and bleeding from sheared vessels around and inside the brain are also possible. Research suggests that safety helmets reduce the risk of head injury by up to 90 per cent.