What is the Achilles tendon?
The Achilles tendon is called the Achilles tendon (tendo calcaneus). Gray's Anatomy (1918) describes it as the thickest and strongest tendon in the body.
What it is
- The thickest and strongest tendon in the body.
- Formed by the joined tendons of the gastrocnemius and soleus muscles.
- Named after the Greek hero Achilles.
Where it is
- At the back of the ankle.
- Attaches to the back of the calcaneus (heel bone).
- Can be felt as the thick cord above the heel.
Source:
Last verified: 2026-07-18
- Best Anatomy Answers is an educational reference about human anatomy. It is not medical advice — for any health concern, talk to a licensed medical professional.