The Achilles tendon is a tendon that connects the calf to the heel at the ankle joint, which itself enables the rolling motion of the foot during walking and running. It allows for flexion of the foot and propulsion during each step.

This part of the ankle joint has a poor blood supply, which explains why it is prone to injury. It is one of the strongest tendons in the human body, yet it is susceptible to a certain fragility.

Thus, when the Achilles tendon ruptures, it is still possible to walk, albeit with more difficulty, but it becomes impossible for the patient to stand on tiptoe. When it occurs, an Achilles tendon rupture is characterized by a popping sound and causes sharp pain and discomfort in the joint.

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