Title: Morphological and Morphometric Study of Branching Pattern of M2 Segment of Middle Cerebral Artery in Human Cadaveric Brains
Authors: Jaya Kadam, Vandana Sharma, Sonia Baweja, Deepak Sharma
DOI: https://dx.doi.org/10.18535/jmscr/v6i6.110
Abstract
Introduction & Aim: The middle cerebral artery arises from the internal carotid artery as the terminal branch. It runs in the stem of lateral fissure as M1 segment and then on the insula as M2 segment with branches. The adjacent opercular cortex supplied by M3 and M4 segment. The aim of study was to record variations in branching pattern of middle cerebral artery in reference to insular cortex.
Material & Method: Formalin fixed 29 brains (58 right and left cerebral hemispheres) were studied at department of Anatomy, Gandhi medical college Bhopal. In the sylvian fissure the branching pattern and variations of middle cerebral artery observed. With the help of Digital Vernier Caliper and magnifying glasses the lengths of M1 & M2 segments recorded.
Result: The bifurcation pattern was present in 96.55% (56/58) cerebral hemispheres. The Mean length of the M1 segment of middle cerebral artery right side 14.63 ± 2.16 mm & left side 15.73 ± 2.54 mm. & M2 segment of middle cerebral artery superior trunk, right side 41.41 ± 8.48 mm, left side 40.18 ± 9.65 mm. and Inferior trunk, right side 49.63 ± 9.67 mm, left side 49.17 ± 9.71 mm.
Conclusion: Bifurcation is more common than trifurcation and the Mean length of Inferior trunk was more than superior trunk in both right and left side. In case of acute middle cerebral artery infarction, the blood supply of insular cortex gets affected and results in diagnostic radiological sign.
Keywords: morphology, morphometric, M2 segment middle cerebral artery, superior and inferior trunk, insular cortex.
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