下胸椎和腰椎椎弓根形态学测量及其临床意义

Pedicle Morphology of the Lower Thoracic and Lumbar Spine and Its Clinical Significance

对15具T_9—L_5段尸体脊椎标本的推弓根进行了实体及X线片形态学测量.测量内容包括:椎弓根高、椎弓根宽、椎弓根后缘皮质与前缘皮质的距离及椎弓根轴线与矢状面夹角.结果提示:临床应用椎弓根螺钉固定时,应选择合适的螺钉,选准进钉点,并注意进钉方向及深度.

Morphometric study of T9-L5 pedicle was made on 15 cadavers with direct measurement and on radiographs. It includes four parts:height of pedicle,width of pedicle,length from posterior cortex of lamina to anterior cortex of vertebral body and angle between the axial line of pedicle and sagittal plane. Result indicates that: surgeons must choose suitable screws,site the starting points precisely,take care of the direction and depth of screws when they use pedicle screw fixation.