An ankle sprain is a stretch or tear of the ligaments supporting the ankle, most often on the outside, and it is among the most common injuries in sport. It is also the injury most likely to happen again — and the main reason is that it is routinely under-rehabilitated. Pain and swelling settle within a few weeks, which feels like recovery, but the balance and control deficits that follow a sprain persist much longer and are not obvious without testing. A substantial proportion of people go on to develop chronic ankle instability, with repeated giving way and ongoing symptoms. Balance and proprioceptive training is what prevents that, and it is the part most people skip.
What happens in a sprain
Most commonly the ankle rolls inward, stretching or tearing the ligaments on the outer side.
Ligament damage is only half of it. The ankle is dense with receptors telling your brain where your foot is in space. A sprain damages those too — and that is the injury that outlasts the pain.
Two other injuries look similar and behave differently:
- High ankle sprain — involving the ligaments between the two shin bones, usually from a twisting force. Pain is higher up the leg, and recovery is considerably slower.
- Fracture — which is why the criteria above exist.
Why it recurs
Having sprained an ankle once is the strongest predictor of spraining it again, and the reason is not ligament laxity alone. Three deficits persist after the pain goes:
- Balance and proprioception. Your ankle is worse at telling your brain what position it is in, so it reacts later to an unexpected surface.
- Strength, particularly in the muscles running down the outside of the lower leg.
- Movement strategy. People land and change direction differently after a sprain, often without noticing.
None of these resolves on its own with time. They resolve with training. Chronic ankle instability — repeated giving way, persistent symptoms, and a sense the ankle cannot be trusted — is the common endpoint when they do not.
What helps
- Early movement, not immobilization. Prolonged rest and rigid immobilization are generally not recommended for uncomplicated sprains. Restore movement early and load progressively.
- Balance and proprioceptive training. This is the part that prevents recurrence, and the part most people never do. It progresses from stable to unstable, eyes open to eyes closed, static to dynamic.
- Strengthening the muscles supporting the ankle.
- Progressive return to load — walking, then jogging, then direction change, then sport-specific work.
- Bracing or taping may help in the return phase, particularly with a history of sprains. It supports return; it does not replace rehabilitation.
What rehabilitation involves
Early — controlling swelling, restoring movement, walking normally, and starting balance work as soon as it is tolerable.
Middle — progressive strengthening and harder balance work.
Later — running, hopping, changing direction, sport-specific movement, and testing against criteria before returning.
How long it takes: pain and swelling frequently settle within two to three weeks. The balance and strength work takes considerably longer, and stopping when it stops hurting is the mistake this page exists to prevent.
Goals worth setting
Stand on one leg with eyes closed for 30 seconds · Run on uneven ground without thinking about it · Change direction at full speed · Play a full match without the ankle feeling unreliable
Reduce ankle pain · Improve ankle stability
Related
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Frequently asked questions
How long does an ankle sprain take to heal?
Pain and swelling often settle within two to three weeks, but that is not recovery. The balance and strength deficits that cause recurrence take considerably longer to address.
Why does my ankle keep giving way?
Usually because the balance and proprioceptive deficits after the original sprain were never addressed. That is chronic ankle instability, and it responds well to targeted training.
Should I rest or move it?
Move it. Prolonged rest and rigid immobilization are not recommended for uncomplicated sprains — early movement and progressive loading produce better outcomes.
Do I need an X-ray?
Not usually. Established criteria are used to decide: inability to bear weight, and bony tenderness over specific points on the ankle bones or mid-foot. If none apply, a fracture is unlikely.
Is a brace a good idea?
It can help during return to sport, particularly with a history of sprains. It supports return rather than replacing rehabilitation — a braced ankle with poor balance is still a vulnerable ankle.
What is a high ankle sprain?
An injury to the ligaments between the two shin bones, usually from twisting. Pain sits higher on the leg and recovery is considerably slower than a standard sprain.
When can I go back to sport?
When you can hop, land and change direction with confidence and symmetry, and complete full training. Not at a fixed number of weeks.