Achilles Tendinopathy is the term that commonly refers to damage of the Achilles tendon or its covering. It is an overuse injury that is common especially to joggers and jumpers, due to the repetitive action and may also occur in other activities that require the same repetitive action.
Tendons are the tough fibres that connect muscle to bone. Most tendon injuries occur near joints as this where the most pulling and force is felt. A tendon injury may seem to happen suddenly, but usually it is the result of many tiny tears to the tendon that have happened over time.