The ankle sprain that never healed: why it still hurts months later

«I twisted my ankle months ago, they put ice and a bandage on it… and it still hurts when I go down stairs». The ankle sprain is one of the most common injuries there is — and also one of the most poorly healed. Up to 4 in 10 people who sprain an ankle are still having trouble, or twist it again, months later. The good news: there is almost always a solution, even when a lot of time has passed.

What tears in a sprain

In the typical twist (the foot rolls inwards), the structure that suffers is the lateral ligament, a short cord joining the ankle bones on the outer side. Depending on how many fibres tear, we talk about a mild, moderate or severe sprain. But the ligament isn't the only thing that gets damaged: the ankle's position sensors also take a hit — the ones that tell your brain, without you realising, how your foot is planted. And that is the key to poorly healed sprains.

Why a sprain «heals badly»

The pattern I see in clinic repeats itself again and again:

• Only the acute phase was treated: ice, a bandage and waiting for the swelling to go down.
• When it stopped hurting, it was assumed to be healed and normal activity resumed.
• Nobody retrained the stability: neither the strength of the muscles that protect the ankle, nor the balance.

The result is an ankle that «warns you too late»: on uneven ground or with a bad step, the foot rolls before the muscles can react. Each new twist damages the ligament a little more, and that is how you end up in the circle of chronic instability.

Naming the problem precisely with ultrasound

When an ankle is still painful months after the sprain, the first thing is to find out what exactly hurts, because it isn't always the ligament: it can be an overloaded peroneal tendon, a small calcification, or simply that residual instability. With musculoskeletal ultrasound I examine the ligament and the tendons in the same consultation, in movement and comparing them with the other ankle. That precise diagnosis is what allows targeted treatment instead of generic «rest and anti-inflammatories».

The treatment: getting the stability back

1. Early movement (not prolonged rest)

Except in specific cases, the ankle recovers better by moving early in a protected way than by being immobilised for weeks. Moving the ankle from the first few days reduces swelling and prevents stiffness.

2. Strength and balance: the part almost nobody does

This is the heart of the recovery and what prevents relapses: strengthening the muscles that protect the ankle with a resistance band and retraining balance progressively — first standing on one leg, then with your eyes closed, then on unstable surfaces. It is the part I go through in most detail in clinic, because it is what makes the difference between an ankle you trust and one you don't.

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3. Targeted treatment if something else has been damaged

If the ultrasound shows a damaged tendon or a specific point of persistent pain, there are precise options to consider before thinking about surgery: from ultrasound-guided injections to PRP in selected ligament injuries.

What if I twisted it years ago?

It is never too late. Chronic instability responds very well to the same strength and proprioception programme, even when the original sprain is an old one. If you feel that you «don't trust» your ankle, that it gives way on uneven ground or that it swells after activity, it is worth having it assessed: with the right diagnosis, the vast majority get back to a stable ankle without going through the operating theatre.