We are independent & ad-supported. We may earn a commission for purchases made through our links.
Advertiser Disclosure
Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.
How We Make Money
We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently of our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What is the Long Thoracic Nerve?

Mary McMahon
By
Updated May 17, 2024
Our promise to you
WiseGeek is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At WiseGeek, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject-matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

The long thoracic nerve is a nerve that innervates the serratus anterior, a muscle found on the side of the chest. The muscle covers several ribs and wraps around to the scapula, holding the bone in place and providing it with stability. Damage to the nerve or the serratus anterior can lead to a condition known as winged scapula, in which the bone does not lie flat. Depending on the nature of the damage, the condition may not be immediately apparent without a medical examination.

The origins of the long thoracic nerve can be found in the brachial plexus, a bundle of nerves that splits into a number of branches to innervate muscles in the arm, armpit, and chest. Classically, the nerve splits from the fifth, sixth, and seventh cervical nerves in the brachial plexus, although sometimes the roots are only in the fifth and sixth cervival nerves.

This nerve wraps behind the brachial plexus and runs down the chest to fully innervate the serratus interior. This muscle has a series of fingerlike projections which attach to the ribs, causing the nerve to branch considerably as it reaches its destination to fully cover the muscle.

There are a number of ways in which the long thoracic nerve can be injured. One of the most common is trauma, because the nerve sits relatively close to the surface of the skin, making it vulnerable to blows that may be incurred during sports, falls, fights, or car accidents. In addition to trauma, the nerve can also be injured through overextension, in which the nerve is strained during stretching. This may occur when someone is not properly warmed up, or when someone overreaches the comfort zone of a stretch. Certain torture methods such as the use of stress positions can also cause damage to the nerve.

Iatrogenic damage can also be an issue. The term “iatrogenic” is used to describe injury or harm that occurs during the course of medical treatment. While doctors try to avoid making their patients worse while they try to help them get better, iatrogenic injuries can happen. In the case of the long thoracic nerve, surgery on the chest may result in damage to the nerve, classically in the case of axillary node dissection, in which the lymph nodes around a breast cancer are removed.

WiseGeek is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Mary McMahon
By Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a WiseGeek researcher and writer. Mary has a liberal arts degree from Goddard College and spends her free time reading, cooking, and exploring the great outdoors.

Discussion Comments
By lovealot — On Nov 09, 2011

I've read that one way that surgeons can reduce nerve injury to the long thoracic nerve that has so many branches and twist and turns, is for more research on mapping out the location of this nerve.

If the surgeon uses a detailed chart of the nerve, he will be better able to avoid injuring the nerve during breast or lung surgery. Those people who have this nerve injured often have lives of difficulty in functioning.

By Clairdelune — On Nov 08, 2011

Wow - the way the long thoracic nerve twists and turns in and out with so many branches is a scary thought when you are going in for some kinds of chest surgery. It seems like the surgeon would have to have a real steady hand to keep from injuring this nerve.

Another scary thought is that you might hurt this nerve just by exercising and stretching if you didn't warm up enough. It's pretty close to the surface of the skin.

Then if you get injured somehow, the nerve could easily be injured from a punch or blunt instrument. I don't know what the treatment for this kind of injury is.

Mary McMahon
Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a...

Learn more
WiseGeek, in your inbox

Our latest articles, guides, and more, delivered daily.

WiseGeek, in your inbox

Our latest articles, guides, and more, delivered daily.