颅骨凹陷骨折合并脑挫裂伤的三维有限元分析研究  

Three-dimensional finite element analysis of depressed skull fracture combined with cerebral contusion and laceration

作　　者：步玮[1] 崔慧先[2] 任慧玲[3] 赵庆林[1] 彭志刚[4] 孙为民[1] 吴建[1] BU Wei;CUI Hui-xian;REN Hui-ling;ZHAO Qing-lin;PENG Zhi-gang;SUN Wei-min;WU Jian(Department of Neurosurgery,The Third Hospital of Hebei Medical University,Shijiazhuang 050051,China)

机构地区：[1]河北医科大学第三医院神经外科,石家庄050051 [2]河北医科大学人体解剖和组织胚胎学教研室,石家庄050051 [3]河北医科大学第三医院神经内科,石家庄050051 [4]河北医科大学第三医院神经内科(CT室),石家庄050051

出　　处：《武警后勤学院学报（医学版）》2021年第10期23-25,43,共4页Journal of Logistics University of PAP（Medical Sciences）

基　　金：河北省卫健委医学课题重点研究计划(指导)(No.20100344)。

摘　　要：【目的】回顾分析颅骨凹陷骨折合并脑挫裂伤的发生率及特点,应用三维有限元方法研究其生物力学机制。【方法】回顾分析我院6年间收治的颅骨凹陷骨折手术患者的临床资料,分析合并脑挫裂伤的临床特点。应用三维重建及三维有限元方法模拟计算不同方向额、顶部冲击载荷下导致凹陷骨折的应力响应及凹陷骨折后应力改变范围及计算结果,分析颅骨应力改变与脑挫裂伤的相关性了解生物力学机制。【结果】颅骨凹陷骨折后常合并脑挫裂伤发生,应用PC机上快捷准确生成颅骨凹陷骨折的有限元模型,直接冲击作用于额部及右顶部,得出发生颅骨凹陷骨折的临界载荷及凹陷后的应力分布云图,与临床中颅骨凹陷骨折合并脑挫裂伤好发部位及程度相一致。【结论】应用颅骨凹陷骨折的三维有限元模型可以模拟并研究颅骨凹陷骨折合并脑挫裂伤的生物力学机制。【Objective】To retrospectively analyze the incidence and characteristics of depressed skull fracture combined with cerebral contusion and laceration,and to study its biomechanical mechanism by three-dimensional finite element method.【Methods】A retrospective analysis of the clinical data of patients with depressed skull fracture surgery admitted to our hospital in the past 6 years,and the clinical characteristics of contusion and laceration combined with brain injury were analyzed.Apply three-dimensional reconstruction and three-dimensional finite element method to simulate and calculate the stress response of depressed fractures under different directions of frontal and top impact loads,as well as the range of stress changes after depressed fractures and calculation results,and analyze the correlation between changes in skull stress and brain contusion and laceration.Understand biomechanics mechanism.【Results】Depressed skull fractures often combined with brain contusions and lacerations.The finite element model of the depressed skull fractures was quickly and accurately generated on the PC,and the direct impact was applied to the forehead and right top.The critical load for the depressed skull fracture and the post-depressed fracture were obtained.The stress distribution cloud chart is consistent with the prevalence and degree of the clinically depressed skull fracture combined with brain contusion and laceration.【Conclusion】The three-dimensional finite element model of depressed skull fracture can simulate and study the biomechanical mechanism of depressed skull fracture with cerebral contusion and laceration.

关 键 词：颅骨 凹陷骨折 三维重建 有限元分析 生物力学 

分 类 号：R687.4[医药卫生—骨科学]