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 Aponeurosis?

By Geisha A. Legazpi
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 connections of muscles to bone are usually thought of as long and collagenous tendons. Muscles, however, can also be attached by flat and sheetlike tendons called aponeuroses. In essence, the aponeurosis is the membranous expansion of a muscle or a muscle group. Under a microscope, it appears similar to a tendon, but it has fewer nerves and blood vessels.

There are several aponeuroses in the body, but the most well-known aponeuroses are found in the abdomen, palms and soles. In the abdomen, the external oblique, which is the largest and most superficial flat abdominal muscle, has its own aponeurosis. As the fibers of the external oblique run toward the midline, they become aponeurotic. The thinnest part of the external aponeurosis called linea alba can be found in the midline by tracing a vertical line along the umbilicus. With pregnancy or abdominal surgery, the external oblique aponeurosis can weaken, which is the reason why abdominal exercises are advisable after these events.

Palmar aponeurosis can be found in the hand. It overlies the soft tissues and the tendons of the flexor muscles. When there is a progressive increase in the fibrous tissue of this structure, a condition called Dupuytren’s contracture, or palmar fibromatosis, occurs. The fibrous bands that connect it to the bases of the fingers become shorter and thicker. This leads to marked flexion or bending of the digits, such that the digits cannot be straightened.

People who get Dupuytren’s contracture are often 40 years old or older. The most commonly affected fingers are the ring finger and the little finger, whereas the thumb and the index finger are usually spared. The progression is usually slow and painless. If it causes significant impairment or disability, Dupuytren’s contracture could be addressed through surgery. The procedure, however, is not curative and is fraught with complications, such as nerve and artery injuries and infection.

Plantar aponeurosis is found in the sole of the foot. The central part is very thick, but it thins out laterally and anteriorly. It is also called plantar fascia, because fasciae are connective tissues that are dense and regularly distributed. The main function of this structure is to support the arches of the foot and hold the foot structures together. As it goes to the digits, it splits into five bands that cover the digital tendons.

Inflammation of the aponeurosis plantar characterized by pain is called plantar fasciitis. It frequently occurs in athletes because of repetitive trauma to the soles. Foot deformities, obesity and age-related atrophy of the fat pad of the foot can also be predisposing factors.

Nonsurgical treatments of plantar fasciitis include rest, cold therapy, physical therapy, stretching and motion-control running shoes. Pharmacotherapy includes giving anti-inflammatory medications such as corticosteroids, aspirin, ibuprofen and other nonsteroidal anti-inflammatory drugs (NSAIDs). Orthotics or foot supports also can be tried. Surgery is a last resort because of the risk of nerve or artery injury and infection.

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.
Discussion Comments
WiseGeek, in your inbox

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

WiseGeek, in your inbox

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