What are the types of Achilles tendinitis?

What are the types of Achilles tendinitis?

The two types of Achilles tendinitis describe which part of the tendon is affected:

• Noninsertional Achilles tendinitis: The fibers in the middle of the tendon start to break down, swell and thicken. This type of Achilles tendinitis affects people who are younger and more active.
• Insertional Achilles tendinitis: This type affects the lower part of the heel, where the tendon connects, or inserts, to the heel bone. It can affect anyone, even people who aren’t active. But it most commonly affects people who overuse the tendon, such as long-distance runners.