An Achilles tendon injury can happen to anyone, whether you’re an athlete or just going about your everyday life. The Achilles tendon is the largest tendon in your body. It stretches from the bones of your heel to your calf muscles. You can feel it - a springy band of tissue at the back of your ankle and above your heel. It lets you point your toes toward the floor and raise up on your tiptoes.
The most obvious sign is pain above your heel, especially when you stretch your ankle or stand on your toes. It may be mild and get better or worse over time. If the tendon ruptures, the pain is instant and severe. The area may also feel tender and swollen.
If your Achilles tendon tears, you may hear a snapping or popping noise when it happens. You could have bruising and swelling, too. You also may have trouble pointing your toes and pushing off your toes when you take a step.