Quick answer
Achilles tendinopathy is a clinical condition characterised by load-related pain and reduced function in the Achilles tendon. Persistent cases commonly involve altered tendon structure and impaired load tolerance rather than a simple ongoing inflammatory process.
Article
A load-related tendon disorder
The Achilles tendon transfers force from the calf muscles to the heel and is exposed to substantial load during walking, running and jumping. Tendinopathy develops when the tendon’s capacity and the demands placed upon it become mismatched. Symptoms are often worse with activity, after increases in training or after periods of relative rest.
Not simply “wear and tear”
Tendinopathy is not best understood as a tendon simply wearing out. Changes can include altered collagen organisation, increased tendon thickness and changes in the tendon matrix. Imaging findings must still be interpreted alongside symptoms because structural abnormalities can also occur in people without pain.
Two important locations
The two main clinical patterns are mid-substance tendinopathy, usually several centimetres above the heel, and insertional tendinopathy where the tendon attaches to the calcaneus. This distinction matters because compression, exercise selection, imaging findings and surgical options differ.
Key points
- Pain location is diagnostically useful but not sufficient by itself.
- Imaging supports the diagnosis when needed; it does not replace history and examination.
- Treatment should restore load tolerance rather than focus only on pain suppression.
Frequently Asked Questions
Is Achilles tendinopathy the same as a tear?
No. Tendinopathy and a partial or complete tear are different conditions, although they can coexist and may require different management.
Can non-athletes develop it?
Yes. Achilles tendinopathy also occurs in recreationally active and less active adults.