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Achilles Tendonitis Causes - Common Causes of Achilles Tendonitis

Achilles tendonitis is an inflammation of the Achilles tendon. A tendon is a strong fibrous cord connecting your muscle to your bone. Your Achilles tendon, also called heel cord, connects your calf muscles (gastrocnemius and soleus) to the back of your heel bone (calcaneus) that allows you to walk on tip toes or even walk normally.

Achilles Tendonitis Causes

You may develop Achilles tendonitis if you have:

  • Irritation of your tendon due to overuse.

    Achilles tendonitis can happen if you overuse your Achilles tendon. Since your Achilles tendon is attached to your calf muscles, contracting your calf too much or too often may cause inflammation of your tendon. Such activities include climbing stairs and walking or running uphill too often.

  • Achilles tendon rupture or tearing.

    You can rupture your Achilles tendon when you do sudden movements such as jumping or sprinting. Increasing the amount and intensity of your sports training, too fast and too soon may also lead to Achilles tendonitis.

  • Tight calf muscles or Achilles tendon.

    If you have tightness in your calf or its tendon, you may be prone to having tendonitis. Not performing stretching or warm-ups before an activity or sports training can also lead to the development of the condition.

In some cases, you may get tendonitis as a result of normal aging. As you age, your Achilles tendon becomes less flexible and more rigid, increasing your likelihood of having Achilles tendonitis.


Tendinitis. MedlinePlus, National Library of Medicine (NLM). Accessed: November 10, 2010. http://www.nlm.nih.gov/medlineplus/tendinitis.html

Bursitis and Tendinitis. National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS) Information Clearinghouse, National Institutes of Health (NIH). Accessed: November 10, 2010. http://www.niams.nih.gov/Health_Info/Bursitis/default.asp