椎动脉颅外段的形态学研究

本文对国人31例椎动脉颅外段的走行、弯曲、口径、长度进行了观察与测量:(1)因钩椎关节肥大压迫,椎动脉第二部有6.5％在相应部位出现弯曲;(2)椎动脉第三部有六个弯曲,第一和第二弯曲变化最为显著;(3)大多数椎动脉的口径左侧大于右侧,个别椎动脉的口径在两侧之间有显著差异;(4)椎动脉颅外段长度均值:左侧,192.41mm;右侧,189.67mm。另外,本文还分析讨论了有关椎动脉分部与颈椎病机理等问题。

A Morphological Study of Extracranial Segment of Vertebral Artery

The present paper presented some data about the course, flexure, diameter and length of external cranial segment of the vertebral artery obtained from observation and measurement in 31 chinese corpses. 1. 6.5% of the second part of the vertebral artery were compressed by the large uncovertebral joint and presented flexures in the corresponding site. 2. There existed 6 flexures in the third part of the vertebral artery and marked changes were fovnd in the first and second flexures. 3. The diameters in most parts of the tfcl vertebral artery were greater than those on the right. In individual case the diameter of the left vertebral artery differs markedly from that of the right. 4. The meana vlue of the length of the extracranial segment of the vertebral artery were as follows: Left, 192. 41mm right, 189. 67mm. In adaition, some problems about the division of the vertebral artery and the mechanism of the cervical spondylopathy and others were also discussed and analysed in this paper.