目的:(1)建立正常脊柱胸腰椎(T12-L2)、伤椎次全切除圆形融合器重建及伤椎后1/3切除矩形闸门式融合器重建三种三维有限元模型。(2)对比既往胸腰椎三维有限元及体外生物力学研究验证本实验有限元模型的有效性。(3)使用三维有限元分析方法对比分析前路传统次全切除圆形融合器重建及伤椎后1/3切除矩形融合器重建治疗胸腰椎爆裂骨折术后早期的稳定性、终板界面应力及内植物应力分布情况。 方法:(1)选取健康成年男性志愿者1名,通过体检排除脊柱相关疾病。使用螺旋CT扫描胸腰椎T12-L2节段,获得DICOM格式文件;通过Mimics17.0及逆向工程软件GeomagicStudio13.0进行三维重建,...Objective: (1) To establish three kinds of three-dimensional finite element models of normal spinal thoracic and lumbar vertebrae (T12-L2), subtotal corpectomy cylinder mesh cage reconstruction, and posterior 1/3 corpectomy rectangle cage reconstruction. (2) The validity of the finite element model was verified by comparing the past three dimensional finite element analysis and in vitro biomechani...学位:医学硕士院系专业:医学院_外科学学号:2452014115353