Anatomy of the Brachial Plexus



The brachial plexus is formed by the anterior divisions (ventral rami) of the somatic nerves C5, C6, C7, C8, and T1. It may also receive contributions from C4 which gives a branch to C5 and from T2 which gives a branch to T1. If this contribution is mainly or exclusively from C4, the plexus is defined by Winnie as ‘prefixed’, whereas when it comes largely or solely from T2, the plexus is defined as ‘postfixed.’


Brachial plexus anatomy Brachial plexus anatomical disposition and relationships Brachial plexus collateral and terminal nerves Contribution of the intercostal nerves to the brachial plexus Brachial plexus connection with the sympathetic system 


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© Springer-Verlag Italia 2014

Authors and Affiliations

  1. 1.Institute of AnesthesiologyResuscitation and Pain Therapy, University of VeronaVeronaItaly
  2. 2.Institute of Pathological AnatomyBolzano Regional HospitalBolzanoItaly

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