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目的：提高对外伤性脑积水的认识及探讨外伤性脑积水的原因。方法：回顾分析万例外伤性脑积水，其中分别伴颅脑损伤有3例脑挫伤,4例蛛网膜下胜出血、5例硬膜下积液、1例颅骨骨折、3例脑内软化灶、3例脑梗塞、2例硬膜外血肿、1例硬膜下血肿、2例脑疝（大脑镰下疝及钩回疝各1例），另3例颅内未见外伤性异常改变与其并存。通过测量双尾指数来判断脑室系统是否扩大，再结合外伤史而诊断外伤性脑积水。结果：本组病例所测双尾指数值较正常年龄组双尾指数上限值均有不同程度增大。结论：外伤性脑积水可能与应激性反应，脑脊液循环通路或吸收障碍有关。
Objective: To improve the understanding of traumatic hydrocephalus and explore the causes of traumatic hydrocephalus. Methods: Thousands cases of traumatic hydrocephalus were retrospectively analyzed. Among them, there were 3 cases of traumatic brain injury, 4 cases of brain contusion, 4 cases of subarachnoid hemorrhage, 5 cases of subdural effusion, 1 case of skull fracture and 3 cases of intracranial softening Stove, 3 cases of cerebral infarction, 2 cases of epidural hematoma, 1 case of subdural hematoma, 2 cases of hernia (brain sickle hernia and hernia hernia in 1 case), the other 3 cases no intracranial abnormalities Coexist with it. By measuring the two-tailed index to determine whether the expansion of ventricular system, combined with traumatic history and diagnosis of traumatic hydrocephalus. Results: The two-tailed index values in this group were all increased to some extent compared with the upper limit of two-tailed index in normal age group. Conclusion: Traumatic hydrocephalus may be related to stress response, cerebrospinal fluid circulation pathway or malabsorption.