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Updated: Jan 22, 2026

Methods for In Vivo Biomechanical Testing on Brachial Plexus in Neonatal Piglets
Published on: December 19, 2019
A prefix brachial plexus with two trunks and one anterior cord
K Natsis1, M Piagkou1, T Totlis2
1Department of Anatomy, School of Medicine, National and Kapodistrian University of Athens, Thessaloniki, Greece.
Abstract:
The brachial plexus presents a great variability in formation, division and branching pattern. Its variants are of immense importance during axillary and arm surgery and nerve blockade. The current case highlights a unilateral atypical formation of brachial plexus, the so called prefix, in which the C4 root contributed a large branch to the superior trunk and further anastomosis with the inferior trunk. Thus, the prefix or high brachial plexus consisted of a superior and inferior trunk and one anterior cord. Coexisting neural and arterial variations are also discussed in relation to the data literature.
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