Dynamic Motion Wales | Crossroads Clinic
82 High Street, Gorseinon, Swansea, SA4 4BL
01792 447622 / 07855885651


The Achilles tendon connects the calf muscles (gastrocnemius, soleus) to the heel bone (calcaneus). It is the largest tendon in the body and allows a person to walk, run, jump, stand on toes, and go up and down stairs. During running, it is subjected to increased loads of up to 12 times body weight.

Achilles tendon injuries are some of the most common running injuries sustained and have been deemed an overuse injury. However, more up to date research indicates that not only can this type of injury be attributed to overuse but it can also be a consequence of degenerative changes (wear & tear) present in the tendon.

Causes: (although not proven)

  • Rapid increase in running distance or speed
  • Introduction of uphill walking or upstairs walking
  • Tight or weak calf muscles
  • Change of footwear or surface in training regime
  • Foot posture—feet rolling in or out excessively
  • Inadequate footwear—high heel use


  • Pain in middle of tendon
  • Pain/stiffness with first few steps in morning
  • Pain after increased activity
  • In a later stage the pain may be more constant

Treatment options: