Achilles Tendon Rupture

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The Achilles tendon is a thick band of tissue that attaches your calf muscle to your heel bone. It is the largest and longest tendon in your body and is built to handle a lot of stress. But you can rupture your Achilles tendon under extreme stress — like during a sudden start or stop, or if you fall. Sometimes it heals with rest and bracing, but many people need surgery to repair it.

What is an Achilles tendon rupture?

The Achilles tendon attaches the calf muscle to the heel bone. This thick band of tissue is very strong. In fact the Achilles tendon is the largest and strongest tendon in the body. The Achilles tendon gives your leg strength to walk, run and jump.

An Achilles tendon rupture is a full or partial tear of the Achilles tendon. This acute (sudden) injury occurs when the tendon stretches to its breaking point. It happens most frequently while playing sports. Tripping, falling or twisting your ankle can also cause an Achilles tear.

How common are ruptured Achilles tendons?

Achilles tendon ruptures are very common sports injuries. They occur most frequently in people ages 30 to 40 and are more common in men than in women.

People who are “weekend warriors” (usually adults who don’t train regularly, then exercise at a high intensity) are more likely to tear an Achilles tendon than younger, well-trained athletes.

Symptoms and Causes

What causes an Achilles tendon rupture?

Sudden movement that puts stress on the Achilles tendon can lead to a rupture. Typically, people tear the Achilles tendon while playing sports. The biggest culprits are sports with sudden stops, starts and pivots — such as soccer, football, basketball, tennis or squash. Achilles tendon tears aren’t always a sports injury. You can tear your Achilles tendon by tripping, missing a step when going downstairs or accidentally stepping into a hole and twisting your ankle. Some medications — including certain antibiotics and steroid injections in the area — can weaken the Achilles tendon. This can put you at a higher risk for a tear.

What are the symptoms of a torn Achilles tendon?

The classic sign of a ruptured Achilles tendon is feeling (and sometimes hearing) a pop or snap at the back of your ankle. People often mistakenly think something has hit them, but they’re actually feeling the tendon snap.

Other common symptoms include:

• Sharp, sudden pain in the back of the ankle near the heel.
• Swelling and bruising in the back of the ankle.
• Pain when walking, especially upstairs or uphill.
• Tenderness in the spot where the tendon is torn.

What are the complications of an Achilles tendon rupture?

A torn Achilles tendon is a traumatic injury that requires medical attention. Without treatment, an Achilles tendon rupture may not heal properly. This can increase your risk of rupturing it again.

Diagnosis and Tests