Posterior division of middle trunk of brachial plexus

Divisio posterior trunci medii plexus brachialis

  • Related terms: Posterior division

Definition

Muhammad A. Javaid

The middle trunk of the brachial plexus divides into an anterior and a posterior division. The posterior division of middle trunk of brachial plexus merges with the posterior divisions of the superior and inferior trunks to form the posterior cord of the brachial plexus.

Notably, no nerve branches arise directly from the divisions of the brachial plexus.

References

  • Polcaro L, Charlick M, Daly DT. Anatomy, Head and Neck: Brachial Plexus. [Updated 2023 Aug 14]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2025 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK531473/

  • Drake, R.L., Vogl, A.W., and Mitchell, A.W.M. (2010). ‘Chapter 2: The Back’, in Gray’s anatomy for students. (2nd ed.) Churchill Livingstone Elsevier, Philadelphia PA 19103, pp.95-99 & Fig. 2.44 & 2.45.

  • Johnson EO, Vekris M, Demesticha T, Soucacos PN. Neuroanatomy of the brachial plexus: normal and variant anatomy of its formation. Surg Radiol Anat. 2010 Mar;32(3):291-7.