biomechanics of head injuries

Head injuries occur when the brain moves within the skull due to a sudden impact or rapid movement, like a blow or a fall. This movement can cause the brain to bump against the skull, leading to bruising, bleeding, or nerve damage. The severity depends on the force and direction of the impact. Rapid acceleration or deceleration can stretch or tear brain tissue and blood vessels, causing concussion, bleeding, or more severe injuries like brain bruising or swelling. Understanding these mechanics emphasizes why protecting the head with helmets and safety measures is crucial to reduce injury risk.