青少年下颈椎椎弓根的形态学变化及其临床意义

摘要

目的:通过对14~18岁青少年C3~7椎弓根CT影像学扫描,探讨其椎弓根的发育规律和特征,为青少年C3~7椎弓根内固定诊治提供影像学依据.方法:选取青少年下颈椎64排螺旋CT影像学资料20例,将获得的原始数据导入Mimics三维重建软件行相关指标测量与统计分析.结果:青少年下颈椎椎弓根髓腔的各测量指标在性别与侧别间均无差异(P0.05),椎弓根髓腔高、宽和有效钉道长指标呈递增趋势,C3、C4和C7椎弓根髓腔高、髓腔宽有统计学意义(P0.05),C4、C5和C7的E角有统计学意义及C4、C5、C6和C7的F角有统计学意义(P0.05).结论:青少年下颈椎椎弓根解剖学参数有明显的规律性,选择合适直径的螺钉,才能使椎弓根内固定技术达到满意效果.%Objective:To analyze the aging characteristics and significance of subaxial cervical ver-tebra pedicle morphology in the 14~18 adolescent with CT image and to providing basis imaging and developmental pattern of pedicles in subaxial cervical vertebrae adolescent for pedicle fixation.Meth-ods:The 20 adolescents with normal cervical vertebra were selected to do spiral CT scan.The original data imported into the Mimics software were to measure and analyze statistically the relevant indicators. Results:There was no significant difference in the result of the subaxial cervical vertebra pedicle,which were not influenced by bilateralism and gender(P＞0.05).The subaxial cervical vertebra pedicle mor-phology enerally showed an increasing trend with increasing age.The height and width of C3and C4ver-tebra pedicle had significant differences with the C7vertebra(P＜0.05);The E angle of C4and C5verte-bra pedicle had significant differences with the C7vertebra and the F angle of C4、C5and C6vertebra pedicle had significant differences with the C7vertebra(P＜0.05).Conclusion:The anatomy morphology of subaxial cervical vertebra pedicle changed regularly.In order to satisfactory results of the pedicle-screw technique,it must be selected with the suitable screws.