Achilles Tendon Pain (Tendinopathy): Symptoms, Causes & PT Treatment
Updated July 20261 minute read
Achilles tendinopathy is irritation and overload of the tendon at the back of the ankle, causing pain and stiffness there — often worst at the start of activity or the first steps in the morning. It's an overload problem, and the proven treatment is progressive, controlled loading (strengthening), not rest. Most people improve over a few months. A sudden pop with a sharp blow to the back of the ankle and trouble pushing off can mean a rupture — seek prompt care.
What is Achilles tendinopathy?
It's an overload condition of the Achilles tendon, either in its mid-portion or where it attaches to the heel (insertional). Tendons respond to gradual loading, which is why strengthening is central.
Symptoms
Common features are pain and stiffness at the back of the ankle or heel, worse at the start of activity or first thing in the morning, sometimes with thickening or tenderness of the tendon.
What causes it / risk factors
A sudden increase in running or jumping, tight or weak calves, certain footwear, and age-related tendon changes contribute.
How it's diagnosed
Diagnosis is clinical from the location and load-related pattern. Imaging is reserved for unclear cases or suspected rupture.
Physical therapy treatment
What a PT does. Your therapist confirms the diagnosis and guides a progressive calf and tendon loading program while managing training. Exercises & progression (overview). Progressive (often heavy, slow) calf strengthening and graded return to running. Loading-based rehab is the best-supported treatment. Recovery timeline. Often a few months; tendons respond slowly but reliably to loading.
Treatment options compared
Progressive loading is first-line. Footwear and load management help. Injections are used cautiously; surgery is rare and for refractory cases.
Red flags
A sudden pop or sharp blow to the back of the ankle with trouble pushing off can indicate a rupture — seek prompt care. A hot, swollen, feverish joint also needs urgent evaluation.
Frequently asked questions
Sources (4)
- Martin RL, et al. Achilles Pain, Stiffness, and Muscle Power Deficits: Midportion Achilles Tendinopathy Revision 2018. J Orthop Sports Phys Ther. 2018. — JOSPT
- Alfredson H, et al. Heavy-load eccentric calf muscle training for the treatment of chronic Achilles tendinosis. Am J Sports Med. 1998. — PubMed
- MedlinePlus: Achilles tendinitis. — NIH/MedlinePlus
- AAOS OrthoInfo: Achilles Tendinitis. — AAOS OrthoInfo
This article is for education only and isn't medical advice. Always talk to a licensed clinician about your specific situation.