Understanding Your Ankle Sprain

You have rolled your ankle and partly torn a ligament on the outside of it.

It is swollen, it is painful, and over the next few days it is probably going to bruise in a way that looks alarming.

Two things I want to say before anything else.

This is not a severe injury, and nothing is broken. A grade 2 means the ligament is partly torn and still continuous. It is not a complete rupture, you do not need surgery, and you will walk normally again.

And it is going to take longer than you want. Weeks rather than days. That is not a complication, it is just what a partial tear does, and knowing it now will save you a lot of worry in week four.

Most of what goes wrong with a grade 2 sprain is not the injury. It is the management. Up to 40 in 100 people report ongoing ankle trouble a year after a sprain treated the usual way, and that number is almost entirely avoidable.

The short version

• A ligament on the outside of your ankle is partly torn. Section 1.
• The bruising will look worse than the injury is. Section 3.
• Expect six to twelve weeks before full sport, and weeks rather than days for normal walking.
• Resting it for weeks will make the outcome worse, not better. Section 2 explains why.
• RICE is out of date, particularly the rest and the ice. Section 6.
• "Never ice anything" has gone too far the other way. Section 7.
• The thing that most prevents the next sprain is balance training, and almost nobody does enough of it. Section 11.
• Having sprained once makes you 2 to 5 times more likely to do it again, unless you do something about it.

1. What you have actually injured

There are three ligaments on the outside of your ankle, injured in a predictable order.

The ATFL, the anterior talofibular ligament. From the bottom of your fibula, the bone making the knobble on the outside of your ankle, forwards. It is the weakest of the three and almost always goes first, involved in roughly 90 to 95 in 100 lateral ankle sprains.

The CFL, the calcaneofibular ligament. From the same point downwards to your heel bone. It takes a harder force to injure, so when it is involved the sprain is more significant. On scans, about 41 in 100 people with a lateral sprain have injured both the ATFL and the CFL. With a grade 2, there is a reasonable chance yours is one of them.

The PTFL, the posterior talofibular ligament. Running backwards, the strongest of the three, and rarely injured at about 5 in 100.

What grade 2 means: the ligament is partly torn rather than just overstretched. More pain, more swelling, bruising, and when I test it there may be slight extra movement. But the ligament is still continuous, which is the difference between your injury and one that needs an orthopaedic opinion.

Practically: tender in the hollow in front of the knobble is your ATFL. Also tender just below the knobble means the CFL is involved, and your timeline sits at the longer end of section 5.

2. How ligaments heal

Three phases, and knowing them explains why the advice changes as you go.

Phase one: inflammation. Days 1 to 5

Blood vessels leak, the area swells, cells arrive to clear debris. This is not the enemy. It is the start of repair, which matters for section 6.

Phase two: proliferation. Week 1 to week 12

Your body lays down new collagen to bridge the tear. Here is the critical part: the new fibres are laid down in a disorganised tangle, and what organises them is load. Collagen aligns along the lines of stress it experiences.

A ligament loaded sensibly through this phase heals into a strong, well-aligned structure. One that is protected and rested heals into a weaker, more random one.

This is why resting a grade 2 sprain for a month is actively harmful rather than merely unhelpful. It feels like the careful thing to do and it produces a worse ligament.

Phase three: remodelling. Three months to about a year

The collagen matures and strengthens. Your ankle is still changing at six and nine months, long after it feels fine.

3. The bruising, and other things that look worse than they are

Grade 2 sprains produce alarming looking ankles, and people quite reasonably assume that means something serious.

The bruising. Over two to five days you may develop substantial bruising that tracks down into your foot and under the arch, sometimes into the toes. This is gravity moving blood downwards through the tissues. It tells you a blood vessel was involved. It does not tell you the injury is worse than I said.

The swelling. The ankle may be noticeably bigger for a fortnight and still a little puffy at six weeks, particularly at the end of the day. Residual swelling in the evening is normal for a while and is not a sign of damage.

The stiffness in the mornings. Expected for the first few weeks.

What would genuinely concern me is in sections 12 and 13, and none of it is about how dramatic it looks.

4. Why this matters more than people assume

Ankle sprains have a reputation as trivial, and the numbers do not support it.

• Up to 40 in 100 people report ongoing symptoms after a sprain managed the usual way: pain, swelling, giving way, or weakness.
• Around 20 in 100 develop chronic ankle instability, where the ankle repeatedly gives way.
• Having sprained once makes you 2 to 5 times more likely to do it again.

The reason those odds are so poor is not the ligament. The ligament heals.

It is that a sprained ankle loses its sense of position. Inside every ligament are nerve endings that report to your brain where your joint is and how fast it is moving. When a ligament is torn, those sensors stop reporting accurately.

Your brain then has poorer information about where your foot is, particularly on uneven ground, in the dark, or when you are tired.

That is what makes you go over again. And it does not recover on its own just because the pain has gone. Pain settles in weeks. Position sense only comes back if you retrain it.

That retraining is section 11, it takes two minutes a day, and it is the single highest value thing in this guide.

5. Your timeline

Approximate, and people vary. The longer end applies if your CFL is involved.

• Protect it: 2 to 5 days.
• Walking normally: 1 to 3 weeks.
• Back to light activity: 3 to 6 weeks.
• Back to sport: 6 to 12 weeks.
• Keep up the balance work for: at least 6 months.
• Ligament fully remodelled: about a year.

Two things to take from that list.

Week four is where people lose faith. The dramatic early improvement has levelled off, it still is not right, and it feels like it has stalled. It has not. You are in the middle of the proliferation phase and that is what that phase feels like.

And look at the gap between the fourth line and the last two. You will be back to everything while the ligament is still maturing and your balance is still below par. That gap is where the next sprain comes from.

6. The old advice that has changed

Most people were taught RICE: Rest, Ice, Compression, Elevation. It has been replaced.

On rest. Prolonged rest weakens tissue, reduces the quality of healing, delays return to normal activity, and leaves you weaker. Current advice is protection for a few days only, not rest until it stops hurting. With a grade 2 this is the error people make most, because it hurts enough to justify staying off it.

On ice. This is the big change. There is no high-quality evidence that ice improves healing of soft tissue injuries. What it does is numb pain. And since inflammation is part of repair, there is reasonable concern that heavily suppressing it may interfere with healing.

On anti-inflammatory tablets. The same argument, more strongly. Current guidance is that anti-inflammatories should not be part of routine care for soft tissue injury.

What replaced RICE is an approach called PEACE and LOVE, published in the British Journal of Sports Medicine.

For the first few days, PEACE

• Protect. Unload and limit movement for 2 to 5 days. Crutches only if you genuinely cannot weight bear. Let pain guide you, and no longer than that.
• Elevate above heart level when you can.
• Avoid anti-inflammatories.
• Compress. Taping or a bandage to limit swelling.
• Educate. An active approach beats a passive one, and you do not need scans and gadgets.

After that, LOVE

• Load. Return to normal activity as symptoms allow. Pain is the guide, not the calendar.
• Optimism. Expectation genuinely affects outcome, and with a longer injury this matters more.
• Vascularisation. Get your heart rate up with pain-free exercise within the first few days.
• Exercise. Restore movement, strength and balance. This is the part that decides how you are in a year.

7. And the new advice that has been overdone

Being honest about where the correction has gone too far, because you may have read half of this already.

"Never put ice on it." This overstates the case. The evidence says ice does not help healing. It does not say ice is harmful. With a painful grade 2, if ice makes the first 48 hours bearable so you can sleep and move around, that is a reasonable trade. Use it for comfort, not for healing, and not constantly for a fortnight.

"Never take anything." The concern about anti-inflammatories is real. But if pain is stopping you sleeping or walking, a short course may let you move, and moving is worth more than the theoretical cost. Paracetamol is the more sensible first option. Ask your pharmacist if you have stomach, kidney, blood pressure or heart issues.

"Load it immediately, pain is just an output." A misreading of pain science. With a partial tear, the first few days of protection genuinely matter.

"You need a scan." Almost nobody with a grade 2 does. Section 13 covers when an X-ray is justified.

"A couple of weeks of balance exercises will do." Underdone rather than overdone. For a grade 2 the evidence supports six months.

8. Too little movement

With a grade 2, this is the error you are most likely to make, because it hurts enough to make resting feel sensible.

If you protect it for three or four weeks:

• The new collagen lays down disorganised, because nothing told it which way to align.
• The calf muscles waste noticeably within two weeks.
• The ankle stiffens, particularly pulling the toes up towards you, which you need for walking and stairs.
• The position sense does not recover.
• You become wary of it, and wary people move differently, which loads other things.

Every one of those makes the next sprain more likely.

Protection is measured in days here, not weeks.

9. Too much movement

Equally real, and the error if you are fit and impatient.

What too much looks like:

• Swelling that comes back or increases after activity, rather than steadily reducing.
• Pain worse the next morning than before you did the thing.
• Limping. If you are limping, the load is too high. A limp is not toughness, it is a pattern you are teaching yourself.
• Going back to sport because six weeks have passed rather than because you can hop, cut and land on it.

The rule: more ache during and just after is fine. The question is where you are the next day.

• Back to your usual baseline within 24 hours: that was right.
• Still worse after 24 hours: too much. Drop back about 20 per cent.
• Swelling increasing day on day: too much. Go back a stage.

10. What to do, week by week

Days 1 to 5

• Protect it. Crutches only if you cannot weight bear at all, and off them as soon as you can.
• Walk on it as much as pain allows, normally rather than limping. Short distances.
• Compression bandage or taping. Elevate when sitting.
• Start moving the ankle gently straight away. Ankle pumps, pointing and pulling the foot, drawing the alphabet with your toes. Several times a day.

Week 1 to 3

• Walk normally. Slower and shorter is fine.
• Standing, heel down, rock your knee forwards over your toes. Restores the movement needed for stairs.
• Calf raises, both feet, holding support, building towards single leg.
• Get your heart rate up with something that does not hurt. Bike, upper body, swimming.

Week 2 to 3 onwards

• Start the balance work in section 11. This is the part that changes your odds.
• Resistance band work in all four directions, especially turning the foot outwards.
• Progress to single leg calf raises when you can.

Week 6 onwards, and before any return to sport

• Hopping, landing and changing direction, built up gradually over several weeks.
• You should be able to hop comfortably and repeatedly on that leg before anything involving running and turning.
• Compare sides honestly. Aim for about 90 per cent of the other side before full return.
• Do not go back on the date. Go back on the tests.

11. The exercise that prevents the next one

If you take one thing from this guide, take this.

Balance training reduces the risk of a repeat ankle sprain by around a third in people who have sprained before. One review put the relative risk at 0.64. For every 13 people who do it, one avoids a sprain they would otherwise have had.

That is a better result than almost any treatment I can offer you, and it costs nothing.

How to do it

• Stand on the injured leg. Bare foot, near a worktop for safety.
• Hold for 30 seconds. Repeat three times.
• Every day. Two minutes.

Start it around week two to three, as soon as you can stand on that leg comfortably.

How to progress, roughly every one to two weeks

• Level 1: eyes open, firm floor, fingertip support.
• Level 2: eyes open, no support.
• Level 3: eyes closed, no support. This is the big one, because it removes your vision and forces the ankle to do the reporting.
• Level 4: on a cushion or folded towel, eyes open.
• Level 5: on a cushion, eyes closed, or throwing and catching a ball while balancing.

Keep going for at least six months. Longer if you play anything involving turning.

Almost everybody stops this once the ankle feels fine. The ankle feeling fine is not the point. The part of the system that has not recovered is the part you cannot feel.

12. Bracing and taping

For returning to sport, bracing has good evidence. In people who have sprained before, external bracing substantially reduces the risk of another sprain.

• Use it for sport and higher risk activity, particularly for the first few months back.
• Do not wear it all day every day. A supported ankle does less work, and you want it working.
• It is not a substitute for the balance training. A brace protects you while you are wearing it. Balance training protects you all the time.

13. When an X-ray is actually needed

There is a well-tested set of rules for this, nearly 100 per cent reliable at picking up fractures.

An X-ray is warranted if you have pain around the ankle bones and any one of:

• Bone tenderness along the back edge or tip of the knobble on the outside of your ankle.
• Bone tenderness along the back edge or tip of the knobble on the inside.
• Being unable to take four steps, both at the time and now.

And for the foot, if you have midfoot pain and any one of:

• Bone tenderness at the base of the fifth metatarsal, the bony lump halfway along the outside edge of your foot.
• Bone tenderness over the navicular, on the inside of the midfoot.
• Being unable to take four steps.

Note what is not on that list: how swollen it is, how bruised it is, or how much it hurts. Those are poor indicators of a fracture, which is exactly why these rules exist, and exactly why your dramatic bruising does not mean you need an X-ray.

14. When to get help

Go to A&E or an urgent treatment centre

• Any of the X-ray criteria in section 13, if you have not been assessed.
• An obvious deformity, or the ankle looking out of shape.
• Being unable to put any weight on it at all after the first few days.
• Numbness in the foot, or the foot looking pale or blue.
• A wound over the joint.

Contact your GP or NHS 111

• The ankle becoming hot, red and increasingly swollen with a fever, or feeling unwell.
• Calf pain, warmth or swelling, particularly if tight and tender, and especially after a period of being less mobile or a long flight.
• Pain getting worse after the first week rather than better.

Come back and see me

• The ankle giving way, even once.
• Still significantly swollen after three weeks.
• Not progressing against the timeline in section 5.
• Pain at the back of the ankle or along the outside of the foot that is different from the original spot.

Everything else can wait for a normal appointment.

15. If you want to read more

Start here

• NHS advice on sprains and strains. nhs.uk/conditions/sprains-and-strains

The research behind this guide

• Dubois B, Esculier JF. Soft tissue injuries simply need PEACE and LOVE. British Journal of Sports Medicine, 2020. The management advice in sections 6 and 7.
• Return to play after a lateral ligament ankle sprain. Current Reviews in Musculoskeletal Medicine, 2020. The ligament figures in section 1, the healing phases in section 2, and the recurrence and bracing figures in sections 4 and 12.
• Schiftan GS, Ross LA, Hahne AJ. The effectiveness of proprioceptive training in preventing ankle sprains in sporting populations: a systematic review and meta-analysis. Journal of Science and Medicine in Sport, 2015. The balance training figures in section 11.
• Stiell IG et al. The Ottawa ankle rules. The X-ray criteria in section 13.

Bring any of this to your next appointment. Especially the parts that did not sit right.

This guide is general information alongside the advice I give you in clinic. It does not replace it.