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Address for Correspondence: Dr. Premchand S. A, Assistant Professor, Department of Anatomy, JJM Medical College, Davangere, Karnataka, India. Mobile: +91-9449915484 E-Mail: premchandsa@gmail.com Background: The most common branching pattern observed is separate origination of three branches springing from the arch of aorta: the brachiocephalic trunk, left common carotid artery and left subclavian artery. Knowledge of anatomical variations in the origin of brachiocephalic trunk and left common carotid artery from the arch of aorta are important in avoiding surgical and accidental injuries during aortic instrumentation, thoracic and neck surgeries. Materials and Methods: This study is based on dissections performed on 60 properly embalmed human cadaver specimens obtained from Department of Anatomy, JJM Medical College, Davangere. The anatomical variations in the origin of brachiocephalic trunk and left common carotid artery from the arch of aorta were observed. Results: The origin of brachiocephalic trunk and left common carotid artery as separate branches from the arch of aorta was observed in 48 specimens (80%). The common trunk for both brachiocephalic trunk and left common carotid artery was present in 12 specimens (20%). Conclusion: The results in this study provide significant information vital for anatomists, cardiovascular surgeons and radiologists.

ANATOMICAL VARIATIONS IN THE ORIGIN OF BRACHIOCEPHALIC TRUNK AND LEFT COMMON CAROTID ARTERY FROM THE ARCH OF AORTA: A CADAVERIC STUDY