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Ankle · Lateral Ankle Sprain / Chronic Ankle Instability

Ankle Sprain

You overstretched (and partly tore) the ligaments on the outside of your ankle — almost always by rolling the foot inward. It's one of the most common injuries there is. When it doesn't fully recover, the ankle can keep feeling unstable and 'give way' — that lingering version is the same injury that just didn't finish healing.

The ligaments and the position-sense (proprioception) in the ankle get knocked out by the sprain. If you only wait for the pain to settle and never retrain balance and the muscles that resist rolling (the peroneals on the outside), the ankle stays under-protected — so it rolls again, and again. That's why retraining BALANCE is the core of the fix, not just resting it.

How it typically shows up

Pain on the outside of the ankle after rolling/twisting it inward, with lateral swelling and a wobbly, give-way feeling on single-leg balance — once fracture, Achilles rupture, high ankle (syndesmosis), inside-ankle (PTTD), and front-of-ankle arthritis are excluded. 'Giving way' or repeat sprains over a year mark the chronic-instability (CAI) form of the same condition.

How long recovery takes

Early on: protect it, move it gently, and start putting weight through it as it feels ready. Then strengthen the ankle (especially turning the foot outward) and — the most important part — retrain your balance: standing on the one leg, then with eyes closed, then on something soft and wobbly. A first sprain usually settles roughly: mild in 1-2 weeks, moderate in 3-6 weeks, severe in 6-12 weeks or more. Balance work pays off over about 4-6 weeks (a few times a week). A brace early on helps — but a brace alone isn't the fix; the strength and balance work is what makes it stick.

The phased recovery approach

  1. Phase 1 · 1–2 weeks

    Calm

    Settle pain and swelling, restore gentle range, and start putting weight through it as tolerated (POLICE + early controlled motion).

    What you get back: walking on it with less swelling.

    • Ankle Pumps — 2–3 sets × 15–20 reps · Point the foot down then pull it up, slow and full-range
    • Ankle Alphabet (active range of motion) — 2–3 sets × 1–2 reps · Sitting, lift the foot and 'draw' each letter of the alphabet with your big toe
    • Calf Stretch / Knee-to-Wall Mobiliser — 2–3 sets × 20–30s hold · Foot facing a wall, drive the knee toward the wall keeping the heel down
    • Toe Curls / Towel Scrunch (foot intrinsics) — 2–3 sets × 10–15 reps · Sitting with the foot flat (on a towel if you have one), scrunch your toes to drag the towel toward you, or just curl and spread the toes slowly

  2. Phase 2 · 2–5 weeks

    Rebuild

    Build the muscles that protect against rolling — especially turning the foot outward (peroneals/eversion) — plus calf strength.

    What you get back: an ankle that holds steady on uneven ground.

    • Calf Stretch / Knee-to-Wall Mobiliser — 2 sets × 20–30s hold · Foot facing a wall, drive the knee toward the wall keeping the heel down
    • Ankle Alphabet (active range of motion) — 2 sets × 20–30s hold · Sitting, lift the foot and 'draw' each letter of the alphabet with your big toe
    • Self-Resisted Eversion Reps — 3 sets × 10–15 reps · Sit with the injured foot relaxed and use your other foot, a wall, or a table leg as the resistance
    • Band Eversion (the key one) — 3 sets × 10–15 reps · Band anchored to the inside, turn the sole of the foot OUTWARD against the band

  3. Phase 3 · 3–6 weeks

    Back to running

    The therapeutic core — progress proprioception by stability challenge (eyes closed → unstable surface → wobble board), then controlled hop-and-land to return to sport.

    What you get back: cutting and sport without it giving way.

    • Single-Leg Balance, Eyes Closed — 3 sets × 30–40s hold · Single-leg stand with eyes closed, near a wall for safety
    • Single-Leg Balance on a Cushion (unstable surface) — 3 sets × 30–40s hold · Stand on the injured leg on a pillow or folded towel
    • Wobble-Board Balance — 3 sets × 30–40s hold · Stand on a wobble board / balance disc, keep the edges off the floor
    • Single-Leg Balance — 3 sets × 30–40s hold · Stand on the injured leg near a wall, hold steady

  4. Phase 4 · 1–3 weeks

    Back to daily life

    Lock in the balance and ankle strength that keep walking, stairs and uneven ground steady — the non-impact maintenance a PT signs off on when sport isn't the goal.

    What you get back: stairs and uneven ground without the wobble.

    • Graded Walking (24h ankle response) — 1 sets × 600–1800s hold · Walk on flat, predictable ground before adding hills or uneven surfaces
    • Single-Leg Balance, Eyes Closed — 3 sets × 30–40s hold · Single-leg stand with eyes closed, near a wall for safety
    • Single-Leg Balance on a Cushion (unstable surface) — 3 sets × 30–40s hold · Stand on the injured leg on a pillow or folded towel
    • Single-Leg Balance — 3 sets × 30–40s hold · Stand on the injured leg near a wall, hold steady

  5. Phase 5 · 3–6 weeks

    Back to the gym

    Rebuild the loaded single-leg strength and lateral-stabiliser control the gym demands — loaded split squats, resisted ankle strength, and perturbation/unstable-surface balance — so squats, lunges and step work load the ankle without it giving way.

    What you get back: loaded lower-body training again.

    • Wobble-Board Balance — 3 sets × 30–40s hold · Stand on a wobble board / balance disc, keep the edges off the floor
    • Single-Leg Balance on a Cushion (unstable surface) — 3 sets × 30–40s hold · Stand on the injured leg on a pillow or folded towel
    • Single-Leg Balance, Eyes Closed — 3 sets × 30–40s hold · Single-leg stand with eyes closed, near a wall for safety
    • Single-Leg Balance — 3 sets × 30–40s hold · Stand on the injured leg near a wall, hold steady

Exact exercises, sets and progression depend on your severity, equipment and goal — this is the shape of the program, not a one-size prescription.

What matters while you recover

  • Balance is the real medicine here

    The single most important thing you can do is retrain your ankle's balance. Do the single-leg work, then make it harder by closing your eyes, then by standing on something soft. You progress this by making your BALANCE harder, not by adding weight — that's the lever. This is the most strongly-evidenced way to stop the ankle rolling again.

  • Move it and load it — don't just rest

    Early on, protect the ankle (a brace or taping helps) but start putting weight through it as it tolerates and moving it gently — don't immobilise it longer than you have to. Resting until pain fully goes is what leaves an ankle wobbly and prone to rolling again.

  • A brace helps — but not on its own

    A brace is great support early and is one of the best ways to prevent future sprains, but wearing a brace by itself will NOT rebuild your balance and strength. Use it while you do the exercises, not instead of them.

Common questions

Should I just rest it until it stops hurting?
No — that's exactly what leads to a wobbly ankle that keeps rolling. Gentle early movement and weight-bearing, then balance retraining, is what protects you from the next sprain.
Will a brace fix it?
A brace helps early and is good for prevention, but a brace on its own does NOT rebuild the balance and strength — the exercises do. Use it as support while you train, not instead of training.
Why so much balancing on one leg?
The sprain damages your ankle's sense of where it is in space. Retraining that — single-leg, eyes closed, on a cushion — is the single best-evidenced thing for stopping it happening again.
Some discomfort during the exercises — is that okay?
Up to about 5/10 is fine if it settles by the next morning AND the swelling doesn't go up after a session. If pain lingers or it swells more, ease off next time.

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