Morphometric study of callosomarginal artery

Aim: the present study presents the morphometric anatomic features of the cma. its relations with the pericallosal artery & clinical implications are presented. methods: fifty cerebral hemispheres were obtained form cadavars & put in 10% formalin for one week so as to fix them. a mixture of gelatin & indian ink of blue colour was injected in the anterior cerebral artery. measurements of length & diameter of vessels was made by digital vernier calipers. results: the cma was present in 94.3% of hemispheres arising from the distal part of aca. the mean diameter of the cma at its origin was 1.47±0.36mm. the cma ran 1.28±0.8 cm until first branch describing an anterior convex curve backwards & upwards was given. an average of three lesser branches originated from cma. the mean diameter of the cma branches was 0.92±0.33mm. conclusions: the morphometric measurements can help neurosurgeons access lesions located in distal intracranial vessels. its largest course was near the cingulated gyrus.