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Summary Symptoms Read More Video Summary Motion in the human body depends upon a fine balance between strength, flexibility, and range of motion. Muscles need to be strong enough to accomplish a given task, but they also need to be...

Summary Symptoms Read More Treatment Guide Summary Achilles tendinitis describes an inflammatory change of the Achilles tendon without a tear of the tendon. Achilles tendinitis may be acute or chronic. The onset of pain is usually unilateral but may be...