Abstract
Objectives: An understanding of anatomy is essential to surgeons and knowledge of variations is of practical importance. The anatomic and morphologic variations of great vessels are significant for diagnostic and surgical procedures in the neck and thorax region. Vertebral artery is a branch of subclavian artery, generally arising from the first part of subclavian artery on both the sides. Multiple variations in the origin of vertebral artery have been reported in the literature, most common being directly from the arch of aorta, as a branch of thyrocervical trunk, as a branch of common carotid or external carotid artery. Material and methods: Study was carried out among 30 formalin fixed cadavers procured from Dr. D.Y.Patil Medical College, to note down the variations in the origin of vertebral artery. Results: Origin of right vertebral artery was normal in all the cases while the left vertebral artery showed varied origin. Conclusions: Anomalous vertebral artery origins may predisposes an individual to cerebrovascular disorders.
Highlights
Variations of the arteries in the human body are important clinically as well as anatomically
No variations were observed in the origin of right vertebral artery
The knowledge of anatomical variations of vessels in the head and neck region is of immense importance
Summary
Variations of the arteries in the human body are important clinically as well as anatomically. Anomalous variations in the origin and course of arteries have serious implications in angiographic and surgical procedures it is of great importance to be aware of such possibilities of variations. The vertebral arteries arise from the superoposterior aspect of the first part of subclavian artery. It passes through the foramina in the transverse processes of all cervical vertebrae except the seventh, curves medially behind the lateral mass of the atlas and enters the cranium via the foramen magnum [1] and at the lower border of pons it unites with similar artery of opposite side to form basilar artery, each vertebral artery is divided into four parts i.e. cervical, vertebral, sub-occipital and intra-cranial part [2]
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