CAJ | 학술논문

基于 CT 图像数据结合图像处理软件建立人体下颈椎 C3－C7活动节段的三维有限元模型，并验证模型的有效性。选取一名健康志愿者颈椎 CT 数据，建立包括椎体、后部结构、终板、椎间盘、韧带和关节突等部分的下颈椎 C3－C7三维有限元模型，赋予颈椎组织不同成分的材料属性，模拟人体颈椎在正常生理状态下承受扭矩载荷时，前屈、后伸、侧弯和旋转等运动情况下颈椎椎体、椎间盘和小关节的生物力学特性。颈椎 C3－C7活动节段在四种工况下的活动范围与前人离体实验和有限元分析的研究结果基本吻合，颈椎椎体、椎间盘和小关节的应力分布符合其生物力学特性。下颈椎 C3－C7活动节段的模拟结果符合人体的真实运动规律，为临床颈椎的生理、病理研究以及植入器械的力学性能分析奠定理论基础。
기우 CT 도상수거결합도상처리연건건립인체하경추 C3－C7활동절단적삼유유한원모형，병험증모형적유효성。선취일명건강지원자경추 CT 수거，건립포괄추체、후부결구、종판、추간반、인대화관절돌등부분적하경추 C3－C7삼유유한원모형，부여경추조직불동성분적재료속성，모의인체경추재정상생리상태하승수뉴구재하시，전굴、후신、측만화선전등운동정황하경추추체、추간반화소관절적생물역학특성。경추 C3－C7활동절단재사충공황하적활동범위여전인리체실험화유한원분석적연구결과기본문합，경추추체、추간반화소관절적응력분포부합기생물역학특성。하경추 C3－C7활동절단적모의결과부합인체적진실운동규률，위림상경추적생리、병리연구이급식입기계적역학성능분석전정이론기출。
A three -dimensional finite element model of the human lower cervical spine C3 -C7 motion segments was established based on the CT images combined with image processing software and to verify the validity of the model.The CT images of the lower cervical spine C3 -C7 from a healthy volunteer were selected for a three -dimensional finite element model establishment which was consisted of the vertebral body,the rear part of the structure,the end plate ,intervertebral discs,ligaments and facet joints.Cervical tissue were endowed with different composition of material properties to simulate human cervical spine withstand torque loads under nor-mal physiological conditions,the biomechanical properties of the cervical vertebrae,intervertebral discs and facet joints respectively in flexion,extension,lateral bending and rotation cases.The motion range of the cervical spine C3 -C7 under four cases were consisten-ted with the conclusions of previous studies in vitro experiments and finite element analysis of other people,the stress distribution of cervical vertebrae,intervertebral discs and facet joints were in accordance with its biomechanical properties.The simulation results of the lower cervical spine C3 -C7 are in accordance with the real movement of the human body,and lay a theoretical foundation for clini-cal cervical physiological pathology study and the analysis of the mechanical properties of the implanted devices.