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 Plantaris Tendon?

By Katriena Knights
Updated Mar 03, 2024
Our promise to you
The Health Board 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 The Health Board, 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 plantaris tendon lies in the middle part of the calf muscle, on the back of the leg about halfway between the knee joint and the ankle. It extends from the plantaris muscle and attaches to the Achilles tendon, which is the tendon just above the heel and behind the ankle joint. A relatively small tendon, the plantaris tendon is not as vital to overall function as the Achilles tendon, but it can, on occasion, rupture and cause severe discomfort.

A plantaris rupture occurs most often during sports activities, particularly tennis. As a result, this type of injury is sometimes referred to as "tennis leg." Rapid movements required by tennis players, such as accelerating rapidly toward the net or making abrupt direction changes, can strain this area of the leg, leading to injury. Plantaris ruptures occur more often in male athletes, particularly part-time athletes between 40 and 60 years old.

When the injury occurs, the individual might actually hear or feel the tendon pop and feel an intense, stabbing pain in the calf. Pain accompanying a plantaris tendon rupture is persistent and lies deeper within the calf muscle than if the muscle itself were strained. In some cases, the plantaris muscle and tendon have suffered chronic swelling that finally manifests in a rupture, but most of the time, the injury occurs suddenly.

A plantaris tendon strain can sometimes be mistaken for an injury to the Achilles tendon. Doctors diagnosing the strain must examine the Achilles tendon and evaluate movement in the foot, heel and lower leg to rule out damage to this area. Damage to the Achilles tendon is a more serious condition and requires orthopedic treatment. By contrast, a plantaris tear can be treated with rest, alternating cold and heat, elevation and analgesics to manage the pain. Plantaris tendon strains also can be accompanied by swelling and strain or damage to the calf muscle itself.

To avoid strains, athletes should warm up before strenuous activity. Practicing a comprehensive warm-up and stretching regimen before activities such as playing tennis can increase flexibility in the muscles and tendons so they respond better to strain placed on them during the activity. Any sudden or nagging pain in the calf area should be brought to the attention of a doctor, because prompt treatment can help tendon strains and other injuries heal more quickly and thoroughly.

The Health Board 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
By anon949659 — On May 06, 2014

I had a plantaris tendon injury. I'm still recovering. Three weeks in and there is still a lot of pain in the inside of my calf. Physio is helping. I injured it by a sudden burst of running at a dance. t does definitely hurt and takes a while to recover from.

By sweetPeas — On May 28, 2011

Two years ago, I ruptured my Achilles tendon. This is definitely worse than a ruptured plantaris, which is a smaller tendon. I had to have surgery, then three months in a cast, and then six months of physical therapy. It was still sore and stiff so I decided to give up tennis. I was playing tennis when I was injured.

This is the information that I got from the doctor. She told me that this tendon is the largest one in the body and that there are several things that might have caused the rupture.

It might have happened because my calf muscles were weak and tired, or the muscles in the leg were not balanced in strength. Or, maybe, when I was going for a shot, my foot and toes went up from the ground and "pop," the ligament tore apart. I guess I am either too old, or I didn't warm up or whatever. It was a real ordeal.

By Clairdelune — On May 26, 2011

Wow - playing tennis has a number of injuries nicknamed after the game. For example,there is tennis elbow and two injuries to the leg - Achilles tendon and plantaris tendon. When I used to play tennis, I suffered tennis elbow and Achilles tendon. I never had plantaris tendon.

If plantaris tendon is anything like Achilles tendon, it's pretty painful and it takes a lot of treatment - like rest, hot and cold packs, and medication to get rid of the pain. It sounds a lot the same as Achilles tendon, but I guess not as serious.

As in all sports, before you start playing, be sure to warm up. I admit I didn't always do that.

The Health Board, in your inbox

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

The Health Board, in your inbox

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