A Cadaveric Study on Higher Origin of Common Interosseous Artery and its Clinical Correlation

During routine dissection of the upper limb in National Institute of Medical Science & Research Rajasthan, India, in 24 cadavers of both sexes (Cadavers dissected from 2017 to 2020), Two male cadavers of age 62 years and 73 years who have donated their precious body to NIMS & R institute belongs to Rajasthan, during upper limb routine dissection of both cadavers we found in the Right upper limb this variation, this showed the higher origin of the common interosseous artery. The brachial artery present in the right limb gave one branch in the upper 1/3rd of the arm. Then the main artery descended and remained superficial to pronator teres. Just below the elbow joint, it underwent bifurcation into the radial artery laterally and ulnar artery medially. The subsequent course of those two arteries was normal. The other branch of the brachial artery descent downwards and became deep to pronator teres and continued as the anterior interosseous artery. So the anterior interosseous artery instead of arising from the ulnar artery it took its origin from the brachial artery and the common interosseous artery was absent. In the forearm, the radial artery had a more superficial course than the ulnar artery. The ulnar artery is very much thin which is continuing as its normal course in the forearm as well as in the hand. We found a higher origin of an anterior interosseous artery in two cadavers out of 24 cadavers (8.33%). In that one was a 62-year-old male cadaver and another 73-year-old male cadaver. Both variations were the same in the right upper limb of both cadavers. The purpose of this article is to highlight the need for the awareness of the potential existence of such anatomical variation during vascular and reconstructive surgery and how it can be preoperatively detected by color Doppler imaging, which would help the surgeons and clinicians to plan out vascular and reconstructive surgery and therapeutic interventions. The superficial position of the ulnar and radial artery makes it more vulnerable to trauma and more accessible to cannulation.