The Achilles tendon connects your calf muscle to your heel bone, and it’s constantly under load whenever you walk, run, or jump. Overuse can inflame it (Achilles tendinitis), causing pain and stiffness near the heel; a sudden, forceful load — jumping or sprinting off the line — can instead tear it partially or completely (a rupture), which is a different, more serious injury.
Why it happens
Common contributors include tight calf muscles, a sudden jump in training volume or intensity, a lot of uphill running, over-pronation (the foot rolling inward when you walk or run), and switching footwear — for example, going from raised-heel shoes to flatter ones without easing into it.
Recognizing a tear vs. tendinitis
Tendinitis usually builds gradually: pain and swelling near the heel, worse when pushing off on your toes. A tear tends to announce itself — a sudden pop, sharp pain, and in a complete rupture, an inability to lift your heel off the ground or point your toes at all. That last scenario needs prompt medical evaluation.
Early management
For tendinitis, ice for 20–30 minutes at a time, elevating the leg, and reducing the aggravating activity usually come first. A heel lift in your shoe can reduce strain on the tendon while it settles. A suspected rupture is generally managed very differently (often immobilization or surgery), which is why getting an accurate diagnosis matters here more than with most soft-tissue injuries.
Rehab progression (for tendinitis)
Stage 1 — Gentle stretching (can start right away)
A towel stretch, standing calf and soleus stretches against a wall, and a plantar fascia stretch on a stair step all help restore flexibility without loading the tendon under bodyweight.
Stage 2 — Loaded strengthening (once sharp pain has settled)
Heel raises — rising onto your toes and lowering slowly — are the cornerstone of Achilles rehab; the slow lowering phase in particular is what builds the tendon’s tolerance to load. Step-ups add a further strength and control challenge.
Stage 3 — Balance and return to activity
Static and dynamic single-leg balance work rebuilds control around the ankle and tendon. From there, reintroduce running gradually, watching for any return of sharp pain rather than pushing through it.
Are you ready to return to sport?
Compare the injured leg to the uninjured one. You’re generally ready to progress toward full activity once you have full range of motion and strength on both sides, and can jog, sprint, and cut in each direction without pain or limping.
Preventing a recurrence
Regular calf and Achilles stretching, even on days you’re not training, is the single most effective habit if you’re prone to this injury. If uphill running tends to trigger it for you, it’s worth limiting how much of it you do, or building into it more gradually.
Achille tendon exercice
This page is educational and general in nature. If you felt a sudden pop and cannot lift your heel or point your toes, seek prompt medical evaluation — see our medical disclaimer.