What Causes Achilles Tendonitis?

Achilles Tendonitis can be very painful.

Events that can cause Achilles tendinitis may include:
  • Hill running or stair climbing.
  • Overuse resulting from the natural lack of flexibility in the calf muscles.
  • Rapidly increasing mileage or speed.
  • Starting up too quickly after a layoff.
  • Trauma caused by sudden and/or hard contraction of the calf muscles when putting out extra effort such as in a final sprint.