AXILLARY ARTERY- A STUDY ON BRANCHING PATTERN AND VARIATIONS
Journal Title: Journal of Evidence Based Medicine and Healthcare - Year 2017, Vol 4, Issue 43
Abstract
BACKGROUND Study of variations in the branching pattern of axillary artery is of considerable importance. There may be variations in the origin of branches, additional branches or 2 or more from common trunk or the artery may arise separately. The anomalous branching pattern can be correlated to the developmental defects of vasculature during embryonic life. The axillary artery is a part of axis artery of upper limb. Morphological variations of axillary artery of upper limb is very important for vascular surgeons, cardiologists, anaesthetists, radiologists and orthopaedic surgeons. Present study is aimed at finding out the branching pattern of axillary artery, clinical significance and to correlate its embryological basis. MATERIALS AND METHODS The present study was conducted on 20 formalin fixed cadavers (40 limbs), which were allotted to the undergraduate, postgraduate students and BDS students of Government Medical College, Kottayam. Cadavers were numbered 1-20 and the axillary artery and its branches were dissected on both sides following the classical incision and dissection procedure taking care to preserve all branches. The artery was studied under the following headings- 1. Origin of all branches; 2. Course and variation. RESULTS In the present study, it was observed that the branching pattern of axillary artery showed variations in 80% of cases. 8 upper limbs showed normal pattern of distribution (20%). The branches revealed different levels of origin and distribution from the normal pattern. The most common variations observed in the origin of subscapular artery and anterior and posterior circumflex humeral arteries together constitute 40%. The remaining 40% of variations were observed in superior thoracic (17.5%), thoracoacromial (12.5%) and lateral thoracic (10%). These observations in the arterial variations highlights the awareness during regional surgeries and other interventional procedures. CONCLUSION Variations observed in this study are similar to that of other studies, which have been conducted elsewhere across the globe. A clear knowledge of such variations were very essential for the operating surgeons, cardiologists and interventional radiologists to avoid undesirable complications during the interventional surgical procedures in the upper limb region.
Authors and Affiliations
Maheswary Thampi S, Vijayamma K. N, Prasad Kumar R
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