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A person sitting on a path holding their ankle, with the outside of the ankle highlighted in red to show pain from a sprain.
Most ankle sprains involve the ligaments on the outside of the ankle after the foot rolls inwards.

Ankle Sprains: Symptoms, Treatment and Recovery

An ankle sprain is one of the most common injuries seen in emergency departments, sports clubs and GP surgeries. Every year, millions of people twist an ankle while walking, running, playing sport or simply stepping awkwardly off a kerb.

The good news is that most ankle sprains heal completely without surgery. The key is getting the diagnosis right, treating the injury appropriately in the first few days, and following a structured rehabilitation programme.

This guide explains what happens to the ligaments, how sprains are graded, what to do in the first 72 hours, and the rehabilitation that protects you from spraining the same ankle again.

Key points

  • Most ankle sprains involve the ligaments on the outside (lateral side) of the ankle.
  • Around 80–90% recover without surgery.
  • Early movement and gradual weight-bearing usually help recovery.
  • Recovery takes around 6 weeks, although swelling may last 3–6 months.
  • Balance exercises dramatically reduce the risk of another sprain.

What is an ankle sprain?

An ankle sprain is an injury to one or more ligaments around the ankle. Ligaments are strong bands of connective tissue that connect one bone to another and help stabilise joints.

When the foot twists beyond its normal range, the ligaments become stretched or torn. The most commonly injured ligaments are on the outside (lateral side) of the ankle.

Medical illustration of the ankle showing the lateral ligaments with the injured area highlighted in red.
Twisting beyond the normal range stretches or tears the lateral ankle ligaments.

Which ligaments are usually injured?

The lateral ligament complex consists of three ligaments:

Anterior talofibular ligament (ATFL) — the most commonly injured ligament, usually torn when the foot rolls inward.

Calcaneofibular ligament (CFL) — often injured with more severe sprains.

Posterior talofibular ligament (PTFL) — rarely injured except in major trauma.

Anatomical illustration of the outside of the ankle showing the anterior talofibular, calcaneofibular and posterior talofibular ligaments.
Inversion of the foot can stretch or tear the ligaments on the outside of the ankle.

What causes an ankle sprain?

Common causes include sport — particularly football, rugby, netball, basketball, running and hiking — as well as slipping on uneven ground, missing a step and falling awkwardly.

Most injuries occur when the foot suddenly rolls inward (an inversion injury).

What are the symptoms?

Typical symptoms include sudden pain, swelling, bruising, difficulty walking, tenderness over the ligaments and reduced movement. Some people hear or feel a “pop” at the moment of injury.

Do I need an X-ray?

Not everyone needs an X-ray. Doctors often use the Ottawa Ankle Rules to decide whether an X-ray is necessary. An X-ray is usually recommended if there is bone tenderness, an inability to bear weight, or concern about a fracture.

Many ankle sprains have completely normal X-rays, because ligaments do not show up on standard X-rays.

A physiotherapist examining a patient's painful ankle on a treatment couch.
The diagnosis is usually made from your history and a careful examination.

What happens to the ligament?

Ligaments heal in three overlapping stages. Understanding where you are in that process helps set realistic expectations.

StageTimescaleWhat is happening
1 — Inflammation0–5 daysBlood and healing cells arrive; swelling, bruising and pain.
2 — Repair1–6 weeksNew collagen fibres form; the ligament heals but remains relatively weak.
3 — Remodelling6 weeks to many monthsThe ligament gradually strengthens; balance, strength and proprioception keep improving.
Ligament healing is gradual — the tissue is still maturing long after the pain settles.

How bad is my ankle sprain?

GradeInjuryTypical featuresRecovery
Grade ISmall stretch of the ligamentMild swelling, walking possible2–4 weeks
Grade IIPartial tearModerate swelling, bruising, limping6–8 weeks
Grade IIIComplete ligament ruptureSignificant swelling, instability, difficulty walkingSpecialist assessment may be needed; may sometimes require surgery

The first 72 hours

Most modern guidelines recommend protecting the ankle, resting relatively rather than completely, and using ice, compression and elevation to control pain and swelling.

Protect

Avoid another twisting injury. Use a supportive shoe, brace or boot if advised.

Relative rest

Avoid high-impact activity, but continue gentle movement.

Ice

Apply wrapped ice for around 10–20 minutes every few hours during the first couple of days to reduce pain and swelling. Never place ice directly onto the skin.

Compression

Some clinicians recommend compression sleeves or bandages. Evidence that they improve healing is limited, although many people find them comfortable.

Elevation

Raise the ankle above heart level whenever possible during the first few days. This helps reduce swelling.

Should I walk on it?

Yes — if you can. Modern research consistently shows that early weight-bearing is usually better than prolonged immobilisation. Walking encourages circulation, ligament healing, reduced stiffness and faster recovery.

You may need crutches initially if walking is very painful, but most people should gradually increase weight-bearing as comfort allows. NHS guidance notes that early weight-bearing generally helps ankle sprains heal more quickly.

Pain relief

Simple painkillers are usually sufficient, such as paracetamol or ibuprofen where appropriate. Always follow the advice on the packaging or from your healthcare professional.

Rehabilitation

Rehabilitation is the most important part of recovery. Without it, the ankle remains weak and unstable.

Stage 1 (Week 1) — gentle movement

Move the ankle up and down, in and out, and in circles. Repeat several times each day.

Stage 2 (Weeks 2–6) — flexibility and strength

Progress to calf stretches, heel raises, towel stretches and walking normally.

Stage 3 (After 6 weeks) — balance training

Balance exercises retrain the muscles that protect the ankle. Examples include standing on one leg, balancing with your eyes closed, balancing on a cushion and wobble board exercises. These are among the most effective ways to prevent future sprains.

A man performing a single-leg balance exercise on a blue wobble cushion while a physiotherapist supervises.
Balance training is the single most effective way to reduce the risk of another sprain.

When can I return to sport?

Before returning to competitive sport you should have full movement, full strength, no swelling, and be able to hop, run and change direction comfortably.

Progress in steps: walking → jogging → running → training → competition.

A runner on a park path with the ankle highlighted in blue, showing a supported return to running.
Build back gradually, only adding the next stage once the previous one is pain-free.

Will I need surgery?

Almost never — most ankle sprains heal without surgery. Surgery may occasionally be considered if repeated ankle instability persists, multiple sprains continue despite physiotherapy, large ligament injuries fail rehabilitation, or associated cartilage injuries are present.

Possible complications

Most people recover well. Occasionally problems include chronic instability, repeated sprains, persistent swelling, stiffness, cartilage injury and tendon injury.

Persistent pain beyond 8–12 weeks should be reviewed by a healthcare professional.

Red flags — when should I seek urgent medical advice?

Seek urgent assessment if you have severe deformity, an inability to bear weight immediately after injury, numbness, a cold or pale foot, severe pain that is getting worse, increasing redness or fever, or significant calf swelling or chest pain (which could indicate a blood clot).

Frequently asked questions

Can I keep walking?

Usually yes, provided you can tolerate it and gradually increase weight-bearing.

How long will swelling last?

Most swelling settles over 6 weeks, but mild swelling may persist for several months.

Should I wear an ankle brace?

A brace can provide comfort and support in the early stages or when returning to sport, but it should not replace rehabilitation exercises.

Can I drive?

Only drive when you can comfortably perform an emergency stop and fully control the vehicle without pain or restriction.

Will it happen again?

Once you have sprained an ankle, your risk of another sprain increases. Balance and strengthening exercises can significantly reduce this risk.

Top tips

  • Move early — gentle movement and gradual weight-bearing beat prolonged rest.
  • Protect the ankle from a second twist in the first few weeks, especially on uneven ground.
  • Ice for 10–20 minutes at a time, wrapped, never directly on the skin.
  • Do not stop rehab when the pain goes: balance training is what prevents the next sprain.
  • Get reviewed if you cannot bear weight, or if pain and instability persist beyond 8–12 weeks.