Understanding Your Ankle Sprain

You have rolled your ankle and overstretched a ligament on the outside of it. This is the mildest grade of ankle sprain, and it will settle quickly.

So here is the awkward part, and it is the reason this guide exists.

Grade 1 sprains are the ones people ignore. They hurt for a few days, you walk it off, and within a fortnight it feels normal. Which means almost nobody does anything about them.

And then they happen again. Having sprained your ankle once makes you 2 to 5 times more likely to do it again. Up to 40 in 100 people report ongoing ankle trouble a year after a sprain treated the usual way.

None of that is because the ligament failed to heal. Section 3 explains what actually causes it, and it is entirely preventable.

This guide takes about ten minutes to read, and the thing it asks of you takes two minutes a day.

The short version

• You have overstretched a ligament, most likely the ATFL. Nothing is torn through and nothing is broken.
• It will feel normal within one to two weeks.
• The ligament is still maturing for about a year after it stops hurting.
• Complete rest is the wrong answer. So is pushing straight through it.
• RICE is out of date, particularly the rest and the ice. Section 5.
• "Never ice anything" has gone too far the other way. Section 6.
• The one thing that genuinely lowers your risk of doing it again is balance training. Section 10.
• The real risk with a grade 1 is not the injury. It is stopping too soon.

1. What you have actually injured

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

The ATFL, the anterior talofibular ligament. This runs from the bottom of your fibula, the bone making the knobble on the outside of your ankle, forwards to the bone below. It is the weakest of the three and almost always the one that goes. It is involved in roughly 90 to 95 in 100 lateral ankle sprains, and in a grade 1 it is usually the only one.

It is the ligament that resists your foot rolling inwards and pointing down together, which is exactly what your foot did.

The CFL, the calcaneofibular ligament, runs from the same point downwards to your heel bone. It takes a harder force to injure. In a grade 1 it is typically not involved.

The PTFL, the posterior talofibular ligament, runs backwards. It is the strongest and is rarely injured, showing up in about 5 in 100 sprains.

What grade 1 means: the fibres of the ligament have been overstretched, but not torn apart. There is no extra looseness in the joint when I test it. Mild swelling, tenderness over that small hollow in front of the knobble, and you can walk on it with a limp.

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 5.

Phase two: proliferation. Week 1 to week 12

Your body lays down new collagen. The critical part is this: 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 during this phase heals into a strong, well-aligned structure. One that is rested heals into a weaker, more random one.

That single fact is why resting an ankle sprain for weeks is actively harmful rather than just unhelpful.

Phase three: remodelling. Three months to about a year

The collagen matures and strengthens. Your ankle is still changing at six months. It will feel completely normal long before then, which is exactly why people stop their exercises too early.

3. Why a mild sprain still matters

This is the section I most want you to read, because everything about a grade 1 encourages you to skip it.

The ligament is not the problem. The ligament will heal.

The problem is that a sprained ankle loses its sense of position. Inside every ligament are nerve endings that report back to your brain about where your joint is and how fast it is moving. When a ligament is overstretched, 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 and not looking down.

That is what makes you go over again.

And here is the part that catches people out: it does not recover on its own just because the pain has gone. Pain settles in days. The position sense does not come back until you retrain it, and if you never do, it stays below where it was.

Which is how a trivial injury turns into an ankle that keeps letting you down for years.

It is fixable, it takes two minutes a day, and it is section 10.

4. Your timeline

Approximate, and people vary.

• Protect it: 1 to 2 days.
• Walking normally: 3 to 7 days.
• Back to light activity: 1 to 2 weeks.
• Back to sport: 2 to 4 weeks.
• Keep up the balance work for: at least 3 months.
• Ligament fully remodelled: about a year.

Look at the gap between the fourth line and the last two. You will feel completely fine, and be back to everything, while the ligament is still maturing and your balance is still below where it was.

That gap is where the next sprain comes from.

5. 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, and leaves you weaker. Current advice is protection for a day or two, not rest until it stops hurting.

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, because the inflammation is doing a job.

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. Limit movement for 1 to 2 days. Let pain guide you, and no longer than that.
• Elevate when sitting.
• 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.
• Optimism. Expectation genuinely affects outcome.
• 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.

6. 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 it. The evidence says ice does not help healing. It does not say ice is harmful. If ice makes the first 48 hours more comfortable, that is a reasonable trade. Just do not expect it to speed anything up.

"Never take anything." The concern about anti-inflammatories and healing 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. Current advice still includes a day or two of protection.

"You need a scan." Almost nobody with a grade 1 does. Section 12 covers when an X-ray is justified.

"A couple of weeks of balance exercises will do." Underdone rather than overdone. The evidence supports months.

7. Too little movement, and too much

If you rest it properly for a fortnight:

• 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 your toes up, which you need for stairs.
• The position sense does not recover.
• You become wary of it, and wary people move differently.

With a grade 1 this is the less likely error, because it does not hurt enough to keep you off it. But people do baby a mildly sore ankle for a week without noticing.

If you do too much:

• 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 a pattern you are teaching yourself.

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.

8. What to do, week by week

Days 1 to 2

• Protect it, but walk on it as pain allows, normally rather than limping.
• 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.

Days 3 to 7

• Walk normally. Slower and shorter is fine.
• Standing, heel down, rock your knee forwards over your toes. This restores the movement you need for stairs.
• Calf raises, both feet, holding support.
• Get your heart rate up with something that does not hurt.

Week 2 onwards

• Start the balance work in section 10. This is the bit that changes your odds.
• Progress the calf raises towards single leg.
• Resistance band work in all four directions, especially turning the foot outwards.

Before returning to sport

• Hopping, landing and changing direction, built up over a few sessions.
• You should be able to hop comfortably and repeatedly on that leg before anything involving running and turning.

9. A word about the thing most likely to go wrong

You will feel better quickly. That is the hazard.

Within two weeks this will feel like nothing happened. At that point your ligament is roughly two weeks into a twelve week rebuilding phase, and your balance has not been retrained at all.

The honest summary: a grade 1 sprain is a minor injury with a major opportunity attached. Three months of a two minute daily habit, starting now, and you substantially reduce the chance of the next one.

Skip it, and the statistics at the top of this guide are about you.

10. 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.

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 three months. Longer if you play anything involving turning.

Start it in week two. Put it with something you already do daily, like brushing your teeth, or it will not happen.

11. 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 in the first couple of 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.

12. 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.

13. When to get help

Go to A&E or an urgent treatment centre

• Any of the X-ray criteria in section 12, if you have not been assessed.
• An obvious deformity.
• Being unable to put any weight on it at all after the first day or two.
• Numbness in the foot, or the foot looking pale or blue.

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 swollen after two weeks.
• Not progressing against the timeline in section 4.
• 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.

14. 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 5 and 6.
• 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.
• 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 10.
• Stiell IG et al. The Ottawa ankle rules. The X-ray criteria in section 12.

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.