Abstract：
This case study describes a fatal head injury in a 1-year-old child involved in a motor vehicle accident in Japan. The child, secured in a rear-facing child seat, was a passenger in a car driven by their mother when the offset car-to-car collision occurred. The car rotated counterclockwise before coming to a stop. Despite remaining secured in the child seat, the child suffered severe head trauma, leading to cardiac arrest. Autopsy computed tomography revealed a right open depressed fracture, left head contusion, traumatic subarachnoid hemorrhage, intraventricular hemorrhage, and pneumocephalus. The injury mechanism involved the child\'s head striking the right headrest, followed by a swing to the left, induced by the initial impact and subsequent rotational movement. This case highlights the importance of age-specific data in understanding pediatric injuries in motor vehicle accidents and improving child seat safety measures.
摘要：
本案例研究描述了在日本发生机动车事故的1岁儿童的致命头部受伤。孩子,固定在面向后的儿童座椅中，发生汽车对车碰撞时，是由母亲驾驶的汽车中的一名乘客。汽车在停下来之前逆时针旋转。尽管仍然固定在儿童座椅上，孩子头部受了严重的创伤,导致心脏骤停.尸检计算机断层扫描显示右侧开放性凹陷性骨折，左头挫伤,外伤性蛛网膜下腔出血,脑室内出血,还有气颅.伤害机制涉及孩子的头部撞击右侧头枕，然后向左挥杆，由初始冲击和随后的旋转运动引起。此案例强调了特定年龄数据在了解机动车事故中的儿科伤害和改善儿童座椅安全措施方面的重要性。
