Study of Anatomical Variations in Middle Cerebral Artery

  • R Jeyakumar Senior Assistant Professor, Department of Neurosurgery
  • R Veerapandian Professor, Department of Neurosurgery
Keywords: Digital subtraction angiography, Internal carotid artery, Middle cerebral artery


Introduction: Middle cerebral artery (MCA) is the largest and most complex arterial system of the brain. An attempt has been made in this study to enhance our perception of the variations in the microvascular anatomy of MCA in our population.
Aim: The aim of the study was to study the variations in the microsurgical anatomy of the MCA in our population and to compare the variables with the studies on Western population and to discuss its importance with anatomic and surgical considerations.
Materials and Methods: A total of 15 fresh adult cadavers of both sexes were studied in the autopsy room in Madurai Medical College, Madurai, between June 2008 and January 2009. The different variables with regard to the MCA in our population were analyzed and compared with the studies in Western population as well as with other Indian studies.
Results: The mean length of the MCA in this study was 16.37 mm. It was also found to be shorter in length with bifurcating MCA and longer with trifurcating MCAs. The perforators were found to arise predominantly from the inferomedial aspect of the M1 segment. The branching pattern of MCA showed bifurcation in 73% and trifurcation in 27%.
Conclusion: MCA is larger of the two branches of internal carotid artery (ICA), and it is direct continuation with the ICA which favors any emboli to get lodged or secondaries to get deposited or abscess formation. Thorough knowledge of the microvascular anatomy and the myriads of variations are very essential for the operating surgeon to choose the ideal technique to avoid any catastrophe during and after surgery and to give the best possible functional outcome for the patients.

Author Biographies

R Jeyakumar, Senior Assistant Professor, Department of Neurosurgery

Madurai Medical College, Madurai, Tamil Nadu, India

R Veerapandian, Professor, Department of Neurosurgery

Madurai Medical College, Madurai, Tamil Nadu, India


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