Affiliation:
1. Assistant Professor ,Department Of Anatomy, Government Medical College, Kozhikode.
Abstract
INTRODUCTION:The posterior communicating artery is the main anastomotic channel of circle of willis.It joins
internal carotid artery and vertebra-basilar arterial system. The size of posterior communicating artery varies
frequently.The hypoplasia or aplasia of posterior communicating artery can detrmine the prognosis of neurological diseases.
AIM:To study the variations and caliber of posterior communicating artery
MATERIALS AND METHODS: A total of 104 specimens were collected,cleaned ,dissected and xed in formalin.Anatomical variations and
caliber of posterior communicating artery were carefully recorded and photographed.
RESULTS: In the present study,the hypoplasia of posterior communicating artery was one of the frequent variations which were observed in
16.7% of the subjects followed by aplasia in 15.5% and duplication in 1% .
CONCLUSION: Awareness of these variations is important in diagnosis of neurological disorders and in neurovascular surgeries.