Types

Understanding Achilles Tendonitis

Choose a preferred language

Achilles tendonitis is an overuse injury. It causes inflammation of the Achilles tendon. This tendon is found on the back of the ankle. It links the calf muscle to the heel bone. It helps you do pushing-off movements like running or standing on your toes.

Side view of bones of lower leg and foot showing ligaments and Achilles tendon.


 How to say it

uh-KILL-eez ten-dun-I-tis


What causes Achilles tendonitis?

Achilles tendonitis can happen if you do an activity like running, walking, or jumping too much. This overuse can strain, or pull, the tendon. It may lead to minor tearing of the tendon. An injury to the lower leg or foot can also cause it.

A tight calf can cause it so if you don’t warm up before taking part in sports, such as basketball. Then you are more likely to suffer from this condition. You are also more prone to it if you do too much of such an activity too quickly. Correct training and rest can help prevent it.


Symptoms of Achilles tendonitis

The main symptom of Achilles tendonitis is pain. This pain mostly happens when you move the ankle. The tendon may also feel stiff after a period of no activity, such as sleeping. It may also become swollen. You may hear a crackling sound when you move your ankle. The tendon can become thick. And a bone spur may occur.


Treatment for Achilles tendonitis

Symptoms often get better after starting treatment. A full recovery may take several months. Treatments include:

  • Rest. Stop or change the activity that caused the injury. The tendon will then have time to heal.

  • Cold packs. This helps reduce pain and swelling.

  • Prescription or over-the-counter medicines. These help reduce pain and swelling.

  • Shoe inserts. These devices can reduce strain on the Achilles tendon when you move. You may then feel less pain.

  • Stretching and strengthening exercises. Certain exercises can help you regain flexibility and strength in your Achilles tendon.

  • Surgery. This choice can fix the injured tendon. But you won’t need to consider it unless other treatments don’t work.


When to contact your doctor

Contact your doctor right away if any of the following occur:

  • Fever of 100.4°F (38°C) or higher, or as directed by your doctor

  • Chills

  • Pain that gets worse

  • Symptoms that don’t get better, or that get worse

  • New symptoms 

Author: Semko, Laura

Online Medical Reviewer: Rahul Banerjee MD

Online Medical Reviewer: Stacey Wojcik MBA BSN RN

Date Last Reviewed: 05/01/2025

© 2000-2026 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.

Find a Provider

View Our Directory

Find a Location

View Our Practices
Related Articles
Read article
Orthopedics
Boxer’s Fracture

A boxer's fracture is a break in the neck of the fifth metacarpal bone in the hand. It gets its name because the injury is common in boxers who are less experienced. Learn more about boxer's fracture, including symptoms, diagnosis, and treatments.

Read article
Orthopedics
Understanding Lumbar Radiculopathy (Sciatica)

Lumbar radiculopathy is irritation or inflammation of a nerve root in the low back. It causes symptoms that spread out from the back down 1 or both legs.

Read article
Orthopedics
Understanding Osgood-Schlatter Disease: Anatomy

Read how Osgood-Schlatter disease affects your knee, and see an illustration of the knee showing where it occurs.

Read article
Orthopedics
Broken Wrist

A wrist fracture may be a small crack or chip in the bone. Or it may be a major break, with the broken parts pushed out of position. Wrist fractures are treated with a splint or cast, though severe injuries may also need surgery. Here's what you need to know as you recover at home.