Acknowledgements
Lady professor and HOD- Dr. B.
Bhagyalakshmi M.S ANATOMY
Chairman MAMATA MEDICAL
COLLEGE - Sri Puvvada Ajay Kumar
Common CAROTID
ARTERY WITH “SIPHONHOUS” – S-SHAPED TERMINATION ( WITH DUAL KINKS)
In a male cadaver aged about 60 years the right sided CCA from its origin to the
level of cricoid cartilage is uniform in its diameter and showed the same
diameter as that of the left side. From
the level of cricoid cartilage it has
shown a gradual dilatation and showed a kink with the convexity backwards at
the level of lower part of thyroid cartilage and another kink with the
convexity forwards at the upper margin of the thyroid cartilage at an obtuse
angle about 1 cm above the upper margin thyroid cartilage. It bifurcated in to
the medial terminal branch – EXTERNAL CAROTID ARTERY (ECA) and lateral terminal
branch – INTERNAL CAROTID ARTERY ICA.
The ICA rather than passing straightly upwards had a “ C” shaped curved
course in its proximal course. The ECA and its branches where seen dilated
to lesser extent and were very tortuous in their proximal course and were not
according to the description of any standard text book
CLINICAL SIGNIFICANCE:
According to the neuro surgeons the study of common carotid
artery with regard to its bifurcation angle (position and branching),
tortuosity, vascular geometry vascular aging are of potential importance as
they are risk factors for the
atheromatous plaque formation.
Note:
1. Generally
siphon is used for the intracranial course of ICA by anatomist, radiologist,
neurologist and neuro - surgeons
2. The
vagus nerve and IJV Internal Juglar Vein are dissected off.
3. Initially
the CCA trunk along with its terminal branches was colored RED paint later
removed by using a dissolvent. Hence
some areas are showing reddish colouration.
Common CAROTID
ARTERY WITH “SIPHONHOUS” – S-SHAPED TERMINATION ( WITH DUAL KINKS)
ECA – EXTERNAL CAROTID ARTERY
ICA - INTERNAL
CAROTID ARTERY
M- MANDIBLE
T – THYROID CARTILAGE
