腰椎穿刺为临床常用诊疗技术。传统的腰穿是将患者背依床缘侧卧,腰背与床面垂直,头颈向胸部弯曲,两大腿向腹壁尽量屈曲,以充分暴露脊椎间隙。多年来临床实践证明,头颈部屈曲对暴露脊椎间隙并无作用,且对高颅压患者反而会产生病理生理干扰,加重颅内压力,甚至促成脑疝形成意外。笔者遇一高颅压结脑患者行传统侧位腰穿时,突然出现脑疝,病势凶险, Lumbar puncture for clinical diagnosis and treatment techniques. Traditional lumbar wear is the patient back according to the bed edge of the bed, back and bed vertical, head and neck bend to the chest, the two thighs as far as possible to the abdominal wall flexion to fully expose the intervertebral space. Years of clinical practice has proved that head and neck flexion has no effect on the exposure of the intervertebral space, and on patients with high intracranial pressure but will have pathophysiological disturbances, increased intracranial pressure, or even lead to the formation of herniation. The author encountered a high intracranial pressure in patients with traumatic brain injury when the traditional lateral lumbar puncture, the sudden emergence of hernia, the risk of dangerous,