Chinese Journal Of Clinical Anatomy ›› 2018, Vol. 36 ›› Issue (1): 71-76.doi: 10.13418/j.issn.1001-165x.2018.01.016

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Influence of different end-range upper cervical rotation on the vertebral artery lumen

ZHANG Fa-yao 1,3,  FENG Min-shan 2,3, ZHU Li-guo 2   

  1. 1.The Second Department of Orthopedics of Qiqihar Traditional Chinese Medicine Hospital,Qiqihar 161005,China;  2. General Orthopedics Department,Wangjing Hospital of CACMS,Beijing 100102,China; 3. Key Laboratory of Beijing of TCM Bone Setting,Beijing 100102,China
  • Received:2017-07-08 Online:2018-01-25 Published:2018-03-06

Abstract:

Objective To analyze the influence of different end-range cervical rotation on the vertebral artery lumen with CTA.    Methods    To trim 8 fresh cervical adult specimens with upper cervical spine(C0~4) is used to build the vitro model loaded 3 kg of vertebral artery. Contrast agent is injected into vertebral artery and the vertebral artery cross-sectional area in the section(C1,C1/2, upper part of C2 vertebral body 1/3, lower part of C2 vertebral body,C3) of the cervical spine were measured by CT in the end-range cervical positions fixed by gimbal mounting: The data were analyzed to study the mechanism of action of vertebral artery space form out of neurohumoral regulation control.    Results    The end-range rotation and the end-range extension rotation caused homolateral vertebral artery stenosis (P<0.05), not on heterolateral (P>0.05), and narrow areas always appeared on upper part of C2 vertebral body 1/3.   Conclusion    (1)The composite vitro vertebral artery model loaded can be used to analyze the influence of different end-range cervical rotation on the vertebral artery lumen with CTA; (2) The end-range rotation and the end-range extension rotation caused homolateral vertebral artery stenosis out of neurohumoral regulation control, and narrow areas always appeared on upper part of C2 vertebral body 1/3 (The outside of the atlantoaxial lateral mass).

Key words: Upper cervical,  End-range rotation,  Vertebral artery,  Lumen,  Computed tomography angiography