下颈椎经前路椎弓根置钉的应用解剖学研究

目的　为下颈椎前路椎弓根螺钉内固定技术(anterior transpedicular screw fixation, ATPS）的推广提供相关应用解剖学参数。 方法　随机选取30例成人正常颈椎CT影像学资料，将扫描数据导入MIMICS 13.0软件，测量C3~7椎体相关解剖学参数及颈前路椎弓根内固定（ATPS）的置钉参数，并统计分析。 结果 得到选择最佳进钉点及通过最佳进钉通道所测得的置钉参数。经测量得出，C3~7椎弓根的高度要大于宽度，可以容纳最大直径4.5 mm的螺钉，进钉长度可达30 mm。 结论 ATPS作为一种新的内固定技术可以应用于下颈椎疾患的治疗中。对某些颈椎疾患如肿瘤、严重骨质疏松及颈椎三柱损伤等疾患的治疗，可能提供更好的帮助。

Applied anatomic studies of cervical anterior transpedicular screw fixation

Objective　To provide relevant anatomic parameters for the promotion of the Cervical anterior transpedicular screw fixation(ATPS). 　Methods　30 sets adult normal cervical specimens were randomly selected, and the scanned data were imported to the MIMICS 13.0 software；the related anatomical parameters and the pedicle screw parameters of ATPS were measured. Then the obtained data were subject to statistical anylysis.　Rusults　Through measurement the pedicle screw parameters, the best enterance point for screws and the best enterance channel for the screw could be determined. It could be found from the measurement that the height of the cervical vertebral pedicle was larger than the width and the the largest screw it can contain was 4.5 mm in diameter 30 mm in length.　Conclusion　ATPS can be applied to the treatment of cervical vertebra disease as a new fixation technology. It may provide a better help for the treatment of some cervical vertebral disease, such as tumor, serious osteoporosis and three-column injury of the cervical spine.