“Individuals experiencing pain symptoms like shooting, stabbing, or electrical sensations to the latissimus dorsi of the upper back could be caused by a nerve injury to the thoracodorsal nerve. Can knowing the anatomy and symptoms help healthcare providers develop an effective treatment plan?”
Table of Contents
Also known as the middle subscapular nerve or the long subscapular nerve, it branches out from a part of the brachial plexus and provides motor innervation/function to the latissimus dorsi muscle.
The brachial plexus is a network of nerves that stem from the spinal cord in the neck. The nerves supply most of the sensation and movement of the arms and hands, with one on each side. Its five roots come from the spaces between the fifth through eighth cervical vertebrae and the first thoracic vertebra. From there, they form a larger structure, then divide, re-combine, and divide again to form smaller nerves and nerve structures as they travel down the armpit. Through the neck and chest, the nerves eventually join and form three cords that include:
The posterior cord produces major and minor branches that include:
The minor branches include:
The latissimus dorsi muscle cannot function without the thoracodorsal nerve. The muscle and nerve help:
The thoracodorsal nerve can be injured anywhere along its path by trauma or disease. Symptoms of nerve damage can include: (U.S. National Library of Medicine: MedlinePlus. 2022)
A portion of the thoracodorsal nerve is commonly used in nerve graft reconstruction to restore function after injury, which includes the following:
If the thoracodorsal nerve is injured or damaged, treatments can include:
Chu B, Bordoni B. Anatomy, Thorax, Thoracodorsal Nerves. [Updated 2023 Jul 24]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2023 Jan-. Available from: www.ncbi.nlm.nih.gov/books/NBK539761/
Al Maksoud, A. M., Barsoum, A. K., & Moneer, M. M. (2015). Langer’s arch: a rare anomaly affects axillary lymphadenectomy. Journal of surgical case reports, 2015(12), rjv159. doi.org/10.1093/jscr/rjv159
Britannica, The Editors of Encyclopaedia. “latissimus dorsi“. Encyclopedia Britannica, 30 Nov. 2023, www.britannica.com/science/latissimus-dorsi. Accessed 2 January 2024.
U.S. National Library of Medicine: MedlinePlus. Peripheral neuropathy.
Belmonte, R., Monleon, S., Bofill, N., Alvarado, M. L., Espadaler, J., & Royo, I. (2015). Long thoracic nerve injury in breast cancer patients treated with axillary lymph node dissection. Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer, 23(1), 169–175. doi.org/10.1007/s00520-014-2338-5
Kwon, S. T., Chang, H., & Oh, M. (2011). Anatomic basis of interfascicular nerve splitting of innervated partial latissimus dorsi muscle flap. Journal of plastic, reconstructive & aesthetic surgery : JPRAS, 64(5), e109–e114. doi.org/10.1016/j.bjps.2010.12.008
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The information herein on "Understanding Thoracodorsal Nerve Injury & Treatment" is not intended to replace a one-on-one relationship with a qualified health care professional or licensed physician and is not medical advice. We encourage you to make healthcare decisions based on your research and partnership with a qualified healthcare professional.
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