The two main Achilles tendon injuries are:
Achilles tendinopathy.
This refers to tiny tears (microtears) in the tissue in and around the tendon. These tears are caused by overuse. This is often called Achilles tendinitis.
Achilles tendon tear or rupture.
An Achilles tendon also can partly tear or completely tear (rupture). A partial tear may cause mild or no symptoms. But a complete rupture causes pain and sudden loss of strength and movement.
Problems with this tendon may seem to happen suddenly. But in most cases they are the result of many tiny tears in the tendon that have happened over time.
Other conditions can affect the Achilles tendon area. They include:
- Achilles paratenonitis.
- Retrocalcaneal bursitis.
- Insertional Achilles tendinopathy.