Achilles (uh-KILL-eez) tendon rupture is an injury that affects the tendon in the back of the lower leg. It mainly happens while playing sports, especially jumping sports, for fun. But it can happen to anyone.
The Achilles tendon is a strong fibrous cord that joins the muscles in the back of the calf to the heel bone. Stretching the Achilles tendon too far can make it tear partway or all the way. The tear is called a rupture.
The Achilles tendon helps with pointing the foot downward, rising on the toes and pushing off on the foot while walking. People use their Achilles tendons every time they walk and move their feet.
If the Achilles tendon ruptures, there may be a pop, then a sharp pain in the back of the ankle and lower leg. This is likely to make walking hard. Many people have surgery to repair the tear. But for many people, treatment without surgery works just as well.

The Achilles tendon is a strong cord that joins the muscles in the back of the calf to the heel bone. Stretching the tendon too far can cause it to tear, called a rupture.
Some people have no symptoms with an Achilles tendon rupture. But most people:
Talk with a healthcare professional right away if you hear a pop in your heel, especially if it's hard to walk after that.
The cause of Achilles tendon rupture is often an injury that puts sudden force on the Achilles tendon. It can happen from:
Factors that may raise the risk of Achilles tendon rupture include:
To reduce your chance of having Achilles tendon issues follow these tips:

The Achilles tendon links the muscles in the back of the leg to the heel bone. This calf stretch exercise can help prevent an Achilles tendon rupture. To do the stretch, follow these steps: 1. Stand at arm's length from a wall or a chair. Put your palms flat against the wall or hold on to the chair. 2. Keep one leg back with your knee straight and your heel flat on the floor. 3. Slowly bend your elbows and front knee and move your hips forward until you feel a stretch in your calf. 4. Hold for 30 to 60 seconds. 5. Switch legs and repeat with the other leg.