Ankle Sprains: Why "Just Resting It" Sets Up the Next One

Ankle sprains are one of the most common injuries in sport and everyday life. The usual advice is to rest, ice, and let it heal. That advice manages the acute injury reasonably well — and largely ignores what happens next: up to 70% of people who sprain an ankle go on to develop chronic ankle instability, and recurrence rates reach as high as 80% in people who return to high-risk sports without addressing it.

What "Just Rest It" Misses

An ankle sprain damages more than ligament tissue. It also damages proprioception — the joint's sense of its own position — through injury to the mechanoreceptors around the joint. Rest and immobilisation address the tissue healing. They don't restore proprioception, which is a separate process that needs to be specifically retrained.

How Chronic Ankle Instability Develops

Chronic ankle instability is defined by a history of one significant sprain followed by recurrent sprains, a persistent feeling of the ankle "giving way," and impaired function that lasts at least a year after the original injury. It isn't a separate bad-luck event — it's what happens when the proprioceptive deficit from the first sprain is never addressed, so the ankle re-sprains under the same conditions that caused the first one.

What Actually Prevents Recurrence

Balance training — proprioceptive and neuromuscular exercises performed on unstable or single-leg surfaces — is the most consistently supported intervention for chronic ankle instability across systematic reviews. Meaningful improvements in function and patient-reported outcomes have been shown in as little as 4 to 6 weeks of structured balance training.

What This Looks Like in Practice