椎动脉型颈椎病是临床一种常见病,不仅可由椎动脉本身的病变和异常引起,而且与横突孔及其邻近骨性结构的异常,以及周围软组织有着密切关系。由于椎动脉的第二段通过C_1～C_6(颈1～颈6)的横突孔(C_7横突孔通过椎静脉),故孔的口径变化可直接压迫椎动脉,影响其血流量。研究颈椎横突孔及其邻近骨性结构的形态学具有重要的临床价 Vertebral artery type cervical spondylosis is a common clinical disease, not only by the vertebral artery lesions and abnormalities caused, but also with the transverse foramen and its adjacent bony structure abnormalities, as well as the surrounding soft tissue is closely related. Because the second segment of vertebral artery through the C 1 ~ C_6 (neck 1 ~ neck 6) transverse foramen (C_7 transverse foramina through the vertebral veins), so the hole diameter changes can directly compress the vertebral artery, affecting its blood flow. It is an important clinical value to study the morphology of cervical transverse foramen and its adjacent bony structures