Posterior axillary fold

Plica axillaris posterior

  • Latin synonym: Plica axillaris dorsalis

Definition

The posterior axillary fold, also known as the posterior armpit fold, refers to the inferior border of the posterior wall of axilla. It is made by the axillary skin covering the muscle fibers of the latissimus dorsi muscle, as they stretch sideways to insert into the floor of the bicipital groove of the humerus.

References

Text written by Muhammad A. Javaid, MD, PhD © 2023 IMAIOS.

  • Gordon, A. and Alsayouri, K. Anatomy, Shoulder and Upper Limb, Axilla. [Updated 2022 Jul 25]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2022 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK547723/

  • Drake, R.L., Vogl, A.W. and Mitchell, A.W.M. (2009). ‘Chapter 7: Upper Limb’ in Gray’s anatomy for Students. (2nd ed.) Philadelphia PA 19103-2899: Elsevier, pp. 692.