Achilles tendinitis pathophysiology

Achilles tendinitis Microchapters
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

The Achilles tendinitis is the inflammation of the Achilles tendon. The tendon does not have good blood supply or cell activity, so this injury can be slow to heal.

Pathophysiology

The Achilles tendon does not have good blood supply or cell activity, so this injury can be slow to heal. The tendon receives nutrients from the tendon sheath or paratendon. When an injury occurs to the tendon, cells from surrounding structures migrate into the tendon to assist in repair. Some of these cells come from blood vessels that enter the tendon to provide direct blood flow to increase healing. With the blood vessels come nerve fibers. Researchers believe these nerve fibers to be the cause of the pain.