Chinese Journal Of Clinical Anatomy ›› 2018, Vol. 36 ›› Issue (2): 127-131.doi: 10.13418/j.issn.1001-165x.2018.02.002

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The study of the nerve and vascular anatomy in the bifurcation region of the carotid artery and its clinical significance in carotid artery intimal dissection

TAN Qing-jing1, QIN Chao2, YANG Jun-wei1,WANG Tian-bao1, LIN Hao-hai1,ZHANG De-min3, JIANG Zhi-bin3   

  1. 1. Department of  Neurology,the First Affiliated Hospital of Guangxi University of Chinese Medicine,Nanning 530023, China;2. Department of Neurology,the First Affiliated Hospital of Guangxi Medical University, Nanning 530022, China;3. Departmentof Neurology,the 303rd hospital of Chinese People's Liberation Army, Nanning 530021, China
  • Received:2017-08-01 Online:2018-03-25 Published:2018-05-04

Abstract:

Objective To study the nerve and blood vessels in the carotid bifurcation area in cadavers so that the morphological diagnostic basis and anatomic basis could be provided for safe and effective performance of carotid endarterectomy. Methods 20 cases (40 sides) of autopsy specimens with no clear heart and cerebrovascular diseases before death were selected in our school (male 11 cases, female 9 cases). The anatomic study on the nerve and blood vessels in the carotid bifurcation area was performed using the surgical approach of carotid endarterectomy, and morphological and structural features of blood vessels and the relationship between the nerve and the blood vessels were explored. Results The types of common carotid artery bifurcation: type I accounted for 10%; type II accounted for 52.5%; type III accounted for 37.5%. The height of the bifurcation of the common carotid artery: above the top of the thyroid cartilage: 55% on the left side and 62.5% on the right; parallel to upper edge of thyroid cartilage on the upper edge: 37.5% on the left side of the, and the 27.5% on right side of the; below the upper edge of the thyroid cartilage: 7.5% on the left side, and 10% on the right side. The internal diameter of common, internal and external carotid arteries of males were wider than that of females(P<0.05), so was the bilateral carotid bifurcation angle(P<0.05). No statistically significant correlation was found between the internal diameters of common, internal and external carotid arteries of left side and right side. The bilateral carotid bifurcation angle of males was larger than that of female(P<0.05). Conclusion The anatomical measurement data of nerves and vessels on the carotid bifurcation region can not only define the relationship between neck blood vessels and nerves, but also provide morphological evidence and anatomic basis for safe and effective implementation of carotid endarterectomy.

Key words: Common carotid artery; Carotid bifurcation region; Carotid artery intimal dissection, Research significance; Anatomy