What does the coup-contracoup effect describe?

The coup-contracoup effect describes the phenomenon where an injury occurs both at the site of impact (the coup) and on the opposite side of the brain (the contracoup). When a head receives a forceful blow, the brain can collide with the inner walls of the skull, resulting in damage at the point of contact. However, due to the brain's acceleration and potential movement within the skull, it can also suffer injuries on the opposite side as it rebounds away from the skull's impact point. This effect is significant in understanding the mechanics of traumatic brain injury, as both areas can be affected, leading to a range of symptoms and requiring comprehensive assessment and treatment for brain injuries. Understanding this effect is crucial for developing effective management strategies for patients who have sustained head injuries.