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A partial or complete tear of the tendon just above the heel. The injury makes it hard to raise the foot or walk properly.

To reduce the chances of Achilles (uh-KILL-eez) tendon issues, stretch and strengthen calf muscles, vary the type of exercise, try not to run on hard or slippery surfaces, and increase training intensity slowly.

See a healthcare professional immediately if:

• A pop or snap sound or feeling occurs in the heel.
• Walking after injury is not possible.