What is a high ankle sprain?

A high ankle sprain, or syndesmotic sprain, injures the ligaments connecting the tibia and fibula above the ankle joint. It differs from a lateral ankle sprain, which involves ligaments on the outside of the ankle lower down. High ankle sprains typically take longer to heal and are often mistaken for regular sprains.

Can you walk on a high ankle sprain?

It depends on severity. Mild cases may allow walking with modified activity, but many people with a true syndesmotic sprain find weight-bearing more painful and unstable than expected. Pain with rotational movement, pushing off, or climbing stairs suggests you should have it evaluated before continuing normal activity.

What are the signs of a high ankle sprain versus a regular sprain?

High ankle sprains cause pain higher up the leg, near or above the ankle joint, and increase with pivoting or pushing off. Swelling may be less dramatic than a lateral sprain. Regular sprains show concentrated pain on the outer ankle bone. If pain doesn't match the typical rolled-ankle pattern, get it checked.

What speeds up recovery from a high ankle sprain?

Early appropriate movement, bracing or taping during healing, structured strength and balance work once acute pain settles, and managing total daily load all support recovery. Patience is critical, especially for high ankle sprains, since returning to full activity too soon before ligament capacity is restored leads to re-injury.

When should I see a doctor for an ankle sprain?

Seek evaluation if you cannot bear weight, the ankle looks deformed, pain is severe and unrelenting, or improvement stalls after a week of activity modification. High ankle sprains are commonly underestimated early, so getting an accurate diagnosis and individualized plan early improves overall recovery.

High Ankle Sprain vs. Regular Ankle Sprain: Causes and Recovery

Q: How long does a high ankle sprain take to heal?

Mild high ankle sprains may improve in several weeks, while grade 2 to 3 injuries often take 8 to 12 weeks or longer to regain full function. Recovery depends on severity and requires progressive loading of the ligament, not just pain relief. Severe cases with instability may require surgery and a longer recovery timeline.

By Dr. Jonathan Schutza, PT, DPT · Doctor of Physical Therapy

Medically reviewed by Dr. Jonathan Schutza, PT, DPT

High ankle sprains involve different ligaments and a different recovery timeline than the common rolled ankle, and mixing the two up is one of the biggest reasons people undertreat a slow-healing injury.

Anatomical illustration of the syndesmosis ligaments connecting the tibia and fibula above the ankle joint

Most ankles that get rolled on a curb or a trail root involve the outside ligaments. That’s a lateral ankle sprain, and it’s what most people picture when they hear “sprained ankle.” A high ankle sprain is a different injury with a different timeline, and treating it like a standard rolled ankle is one of the more common reasons recovery stalls.

What Makes a High Ankle Sprain Different

A high ankle sprain, also called a syndesmotic sprain, involves the ligaments connecting the tibia and fibula just above the ankle joint itself, the syndesmosis. A regular ankle sprain involves ligaments on the outside of the ankle (or less often the inside), lower down and to the side.

The mechanism is usually different too. Rolling your ankle inward, the classic “I stepped off a curb wrong” motion, tends to injure the lateral ligaments. A high ankle sprain more often comes from the foot getting forced outward while the shin rotates inward, or from the ankle being pushed upward into the shin with force. This shows up a lot in cutting sports, skiing, and collisions where the foot gets planted and the leg twists over it.

Because the syndesmosis ligaments help hold the tibia and fibula together and stabilize the whole mortise the ankle sits in, an injury here affects more than a small local area. That’s a big part of why these sprains tend to take longer to heal and why they get missed or underestimated more often than a standard sprain.

How to Tell If You Have a High Ankle Sprain

A few features tend to point toward the syndesmosis rather than the lateral ligaments:

Pain sits higher, above the ankle joint, along the shin toward the calf, rather than concentrated on the outer ankle bone.
Pain increases with movements that rotate the shin over a planted foot, like pivoting or pushing off to walk upstairs.
Swelling and bruising may be less dramatic than a bad lateral sprain, which surprises people who assume less visible bruising means a lesser injury.
Walking feels unstable or painful in a way that seems disproportionate to how the ankle looks.

None of this substitutes for an exam. Ankle pain that’s hard to pin down, doesn’t fit the classic “rolled inward, bruised on the outside” pattern, or isn’t improving the way you’d expect is worth having looked at, partly because a few other things can mimic a sprain (more on that below).

The Squeeze Test

One test clinicians use is the squeeze test. The examiner squeezes the tibia and fibula together at the middle of the calf, away from the ankle itself. If that squeeze reproduces pain up near the ankle, it suggests the syndesmosis is irritated, since compressing the bones together stresses those connecting ligaments even though the hands aren’t near the ankle joint. It’s one piece of information among several a clinician uses, not a stand-alone diagnosis, and it isn’t something we’d recommend trying to interpret on yourself at home.

Can You Still Walk on a High Ankle Sprain?

Sometimes, yes, especially with milder injuries. But many people with a true syndesmotic sprain find weight-bearing more painful and less stable than they’d expect for how the ankle looks. Pain with rotational movement, pushing off, or going up stairs is a common giveaway. If putting weight on the foot causes sharp pain higher up the leg rather than at the ankle itself, that’s worth getting checked before you keep walking on it as usual.

Grading Ankle Sprains: Grade 1, 2, and 3

Comparison of ankle sprain grades showing progressive ligament damage from mild to complete tear

Both high and regular ankle sprains get graded by severity, and the categories are useful for setting expectations.

Grade 1 is a mild stretch of the ligament with minimal fiber tearing. Swelling is usually mild, walking is generally tolerable, and recovery is typically measured in days to a couple of weeks.

Grade 2 involves partial tearing. Expect more noticeable swelling, bruising, difficulty walking normally, and a looser feeling in the joint. Recovery often runs several weeks.

Grade 3 is a complete tear of the ligament. Swelling and instability are usually significant, weight-bearing is often very difficult in the early days, and recovery can take a couple of months or longer. High ankle sprains at this severity sometimes involve imaging to rule out an associated fracture or the need for surgical stabilization, since a fully torn syndesmosis can leave the ankle mortise unstable.

The honest answer to “how do I know if mine is grade 2 or 3” is that it takes a hands-on exam, and often imaging, to sort out reliably. Instability, the ability to bear weight, and how much the ankle gives way under stress all factor in, and those are hard to self-assess accurately when you’re the one in pain.

Four Signs an Ankle Sprain Might Be More Serious

A few red flags suggest you’re dealing with more than a minor sprain and should get evaluated rather than waiting it out:

You can’t bear any weight on the foot, or can only take a few steps with significant pain.
The pain is higher up the leg, near or above the ankle joint, rather than centered on one side of the ankle.
The ankle feels unstable or gives way, as if it might buckle, even on flat ground.
Swelling and bruising are extensive, or pain isn’t improving at all after several days of sensible load management.

Any of these, especially in combination, are reasons to get evaluated rather than assume it’s a routine sprain that’ll settle on its own.

What Can Be Mistaken for an Ankle Sprain

A handful of other injuries can look and feel like a sprain at first glance:

A fracture of the fibula or tibia, particularly near the ankle. Some fractures cause pain patterns very similar to a sprain.
An os trigonum or other bone irregularity that gets irritated by a twisting injury.
Peroneal tendon injuries, which sit near the same area as lateral ligaments and cause similar outer-ankle pain.
A high ankle sprain being mistaken for a regular one, which is common enough that it’s worth naming here. The two get treated differently, so mixing them up can slow recovery.

This is the main reason we don’t love the “just rest it and see” approach for anything beyond a clearly minor tweak. An evaluation sorts out what you’re actually dealing with instead of guessing.

How Long Does a High Ankle Sprain Take to Heal?

This varies a lot by severity, but high ankle sprains typically take longer than lateral ankle sprains of similar grade. A mild syndesmotic sprain might improve over several weeks. More significant injuries, particularly grade 2 to grade 3, often take 8 to 12 weeks or more to regain full function, and severe cases with instability sometimes need surgical stabilization with a longer recovery arc after that.

It helps to think about this the same way we think about any connective tissue injury: healing is about rebuilding the tissue’s capacity to tolerate load, not just waiting for pain to go away. Pain often settles before the ligament has fully regained its ability to handle cutting, pivoting, or uneven ground, which is exactly why these injuries get re-injured when people return to sport or heavy activity too soon.

How Long Should You Stay Off a Sprained Ankle?

Complete rest for days on end usually isn’t the answer, for either a high ankle sprain or a regular one. Rest has a role early on, mainly to calm acute pain and swelling in the first day or two, but staying immobile for too long lets the tissue lose capacity rather than rebuild it. For many people, the better approach is protected weight-bearing as tolerated: keep pain during and after activity to a mild level, often cited loosely as staying at or below about a 4 out of 10, and gradually increase what the ankle is asked to do as it settles.

For a genuinely mild sprain, that might mean a few days of reduced activity followed by a fairly quick return to normal walking. For a higher-grade sprain, especially a syndesmotic one, the timeline stretches out, and a brace, boot, or crutches may be appropriate for a period while the ligament settles enough to tolerate more load. This is a case where getting an individualized plan matters more than following a generic timeline, since the right pace depends on how the ankle actually responds.

What Speeds Up Recovery

A few things generally help, whether you’re dealing with a lateral sprain or a syndesmotic one:

Early appropriate movement. Gentle range of motion and progressive weight-bearing, as tolerated, tend to outperform strict immobilization for most sprains once any serious instability or fracture has been ruled out.
Bracing or taping during the healing window, which supports the ankle without fully immobilizing it, letting you stay active while protecting the injured tissue.
A structured strength and balance progression once acute pain has settled, since the ankle needs to relearn stability, not just calm down. Balance work matters here as much as strengthening; sprains often leave subtle proprioceptive deficits that plain rest doesn’t fix.
Managing total load, meaning you account for how much walking, standing, and activity you’re doing across the whole day, not just during a specific exercise session. A flare-up a day or two after a long day on your feet is common and doesn’t mean you’ve undone your progress, it usually means the day’s cumulative load outpaced what the ankle could handle at that point.
Patience with the timeline, especially for high ankle sprains. Stopping rehab as soon as pain resolves, before the ligament has had time to actually adapt, is one of the more common reasons these injuries linger or recur.

Anti-inflammatory measures, ice, and compression can help manage symptoms in the early days, and that’s a reasonable part of the picture. They calm sensitivity; they don’t rebuild ligament capacity on their own. The two work together, not as substitutes for each other.

When to Get It Checked

If you can’t bear weight at all, if the ankle looks visibly deformed, if pain is severe and unrelenting, or if things aren’t improving after a week or so of sensible activity modification, it’s worth having a clinician take a look. This is especially true for anything that might be a high ankle sprain, since these are more prone to being underestimated early on, and getting the right diagnosis early tends to make the whole recovery smoother. Many people improve well from both high and regular ankle sprains once they’re on an appropriate, progressive plan. The principles are sound. What differs is the starting point, the pace, and the patience the injury requires.