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Anatomy

Authors: Kasper Baasch Nielsen, Med. Stud., Anne Mosebo, MD and Magnus Balslev Avnstorp, MD

When performing brachioplasty of the upper arm special attention must be paid to preservation of the following nerves:

  • Medial brachial cutaneous nerve (MBCN) which derives from T1-2
  • Medial antebrachial cutaneous nerve (MABCN) which derives from C8-T1

Both are sensory nerves that innervate the medial aspect of the arm. Injury of these cutaneous nerves may lead to sensory disturbances of the medial aspect of the arm, paresthesia, and dysesthesia for the patient. Therefore, preserving these cutaneous nerves and leaving the brachial fascia intact, is crucial. To avoid the sensory nerves, the incision, and consequently the scar, should be placed at the posterior-medial part of the arm1.

Figure 1 | The sensory innervation of the medial aspect of the arm.

Acknowledgements:

Illustrators: Anne Mosebo, Med. Stud.

References

  1. Egrari S. Brachioplasty: A Personal Approach. Aesthet Surg J. 2016;36(2):193–203. doi:10.1093/asj/sjv146


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