The shoe fits. The heel still lifts out

The best shoes for SMO braces are not simply the ones that go on. An SMO is a low brace. It stops just above the ankle bones and deliberately leaves the ankle free to bend.1 That single fact is why shoes that work over an AFO fail over an SMO, and why the problem is almost never the length. Pick what is actually going wrong and the list below reorders.

Written by Heath, who has lived it: casts from birth, a fusion at sixteen, the US Army, and distance running.

Shortlist

Four that families keep coming back to

Chosen against the problems above, not by brand. None of them fits every foot, and one swap is normal.

Most structured PrincePard Orthopedic A deep, wide shoe with a genuinely firm counter and a removable footbed. If the heel is lifting out, this profile is the one that most often settles it. Check price

Best on the collar Memo Gabi A softer, lower collar that clears the SMO trim line instead of meeting it. Worth trying first where the complaint is rubbing at the ankle bone, not fit. Check price

Easiest entry Orthopop Opens far enough back that the braced foot drops straight in. The one to look at if the real problem is the fight every morning, not anything about the fit. Check price

Second profile PrincePard alternate A different last in the same family, worth having as the comparison. SMO fit is personal enough that a close-but-wrong first choice is normal, and one swap usually settles it. Check price

These are affiliate links. If you buy through one, Clubfoot Forward earns a small commission at no extra cost to you, and it helps keep the site running. It does not change what is recommended: the problems above were written first, and the shoes were picked to answer them.

Start with the failure, not the shoe

Pick everything you are seeing. Most families have two problems at once, and the combination decides which change is worth making first.

What is happening

A heel counter firm enough to hold the brace down

Squeeze the back of the shoe between finger and thumb. It should barely move. An SMO controls the heel from below and the sides, but nothing holds it down into the shoe except the shoe itself, so a soft counter lets the whole brace ride up with every step. This is the single most common SMO shoe failure and it is invisible until you look at where the heel actually sits.

Heel lift is the complaint families report most, and it is a property of the shoe, not anything the brace is doing.

Commonest

Depth, from a removable insole

Take the insole out before you buy. If it lifts cleanly, the shoe has volume to give, and volume beats length for a braced foot needs. A glued-in insole fixes the depth at whatever the manufacturer decided, which is why so many families end up sizing up two full sizes just to find room that should have been there already.

Solves the closing problem without the sizing-up problem, and costs nothing to check in the store.

Check first

An opening that folds all the way back

A shoe that opens to the heel, whether by full zip or laces unthreaded to the bottom eyelet, lets the braced foot go straight down onto the footbed instead of being posted in at an angle. Most of the morning fight is geometry, not strength, and this is the change that ends it.

The daily aggravation that makes families give up on an otherwise workable shoe.

Daily grind

A low, soft collar that clears the trim line

The top edge of an SMO sits just above the ankle bones, and a padded shoe collar sits at almost exactly the same height. Two firm edges meeting at one line of skin is where the rubbing comes from. Either the collar needs to be low enough to sit under the trim line or soft enough to deform around it. A stiff mid-height collar is the worst of both.

Explains rubbing that appears with no change in brace fit, and the pattern points at the shoe, not the orthosis.

Skin

Measure the braced foot, not the bare one

Fit with the brace on, every time, and check the thumb’s width in front of the longest toe with your child standing. A foot inside an SMO sits slightly further forward than a bare foot, so a shoe fitted barefoot runs short in a way that shows up as jammed toes instead of an obviously small shoe.

Free, and it removes the guesswork that drives most of the sizing-up.

Habit, not purchase

Stop buying volume with length

Going up two sizes is how most families make a shallow shoe close, and it creates the next problem: a foot with room to slide is a foot that lets the brace rotate, and a heel with room to lift will lift. If the only way a shoe closes is by being too long, it is the wrong shoe, not the wrong size.

The workaround that quietly causes findings 1 and 7, so it is worth naming as a mistake, not a fix.

Common trap

A forefoot that still bends

This is where SMO shoes differ from AFO shoes, and it gets missed constantly. An AFO holds the ankle still, so a stiff sole helps. An SMO leaves the ankle free on purpose, so the foot is meant to roll through the step. Put that foot in a rigid-soled shoe and you have quietly canceled part of what the brace was prescribed to allow.

The one place where copying AFO shoe advice actively works against an SMO.

SMO-specific

Know when it is not a shoe problem

Redness that fades within about twenty minutes of the brace coming off is ordinary pressure. Redness that is still there an hour later, breaks the skin, or sits over a bony point is not something a different shoe fixes. The same goes for a brace that rotates no matter what it is put inside, and that is a strapping or trim-line question.

Buying a fourth pair of shoes is the expensive way to discover the brace needed adjusting.

See the orthotist

Eight things to change, in rough order of how often they turn out to be the answer. Pick what is happening and the list re-ranks.

Why SMO shoes and AFO shoes are not the same problem

The condition underneath is usually clubfoot

Most children in an SMO after foot surgery are there because of clubfoot, written club foot by plenty of families and recorded as congenital talipes equinovarus, or CTEV, in the notes. The brace is prescribed for what the foot does now, so the same SMO turns up after other conditions too, and the fitting problems below are identical either way.

An SMO, a supramalleolar orthosis, is trimmed to finish just above the malleoli, the bony bumps either side of the ankle. It controls the heel and midfoot side to side and deliberately stops short of the ankle joint1, so the ankle can still bend. An AFO carries on up the calf and holds that joint still.

Everything that makes shoe fitting different follows from that one difference. An AFO is tall, so the shoe needs height and a wide throat, and a stiff sole helps because the ankle is not going to move anyway. An SMO is short and bulky low down, so the shoe needs depth and a firm heel but should still bend at the toes, because the foot inside it is meant to roll.

This is why families who follow AFO shoe advice for an SMO often end up with a shoe that is too rigid and too tall: it solves problems the SMO does not have and creates two it did not have before.

AFO shoeTall opening, wide throat, stiff sole. The ankle is held still.

SMO shoeDeep, firm heel, low collar, flexible forefoot. The ankle still moves.

SharedRemovable insole, fit with the brace on, and a heel that stays seated.

Fitting an SMO like an AFO cancels the movement the SMO was prescribed to leave alone.

If you are looking for an alternative to an SMO

People search for SMO alternatives more often than you would expect, and it is usually one of two questions underneath. Either the brace is uncomfortable and the hope is that something less intrusive would do, or the child hates it and the family is looking for a way out.

The honest answer is that the alternatives are not interchangeable, because they control different things. A foot orthosis or molded insole sits inside the shoe and supports the arch, but it cannot hold a heel that rolls. An SMO adds that side-to-side heel and midfoot control while leaving the ankle free. An AFO adds ankle control on top, at the cost of the movement. Supportive boots do a little of the first and none of the rest.

So which one a child needs is a question about where the control has to come from, and that is an orthotist’s judgment, not a shopping decision.1 What is genuinely worth raising at the appointment is the specific problem: the rubbing, the refusal, the heel lift. Because trim lines, padding and strapping can often be adjusted without changing the type of brace at all.

Socks under a brace → When the brace itself is the problem → Socks for the boots and bar →

Before the shoe

Half of the shoe problems are brace problems

Parents arrive at this question convinced the shoe is wrong, and a good share of the time the brace is not properly on. A heel sitting even slightly proud of the footbed adds height and length the shoe then cannot absorb, and no purchase fixes it.

Scoop the foot in, do not push it down

Spread the plastic at the top of the SMO and slide the foot in from behind and underneath, so the heel arrives fully seated at the bottom.5 Bending the child’s knee to about ninety degrees makes that much easier, which is the single most useful thing on this page for a toddler who fights the process.5

Instep strap first, and snug

The instep strap holds the heel down. Fasten it first and pull it properly tight, then any remaining straps.5 Doing them in the other order sets the foot in the wrong place and then locks it there.

The sock is not optional either

A sock has to cover every piece of skin the plastic touches, absorb perspiration, and reach at least half an inch past the ankle bones.5 Smooth out wrinkles before the brace goes on, because a rucked seam under a rigid shell is how skin breaks down.5

Never on hard floors without a shoe

An SMO should not be worn without shoes at all, and on hard surfaces the plastic gets genuinely slippery.5 That is a falls hazard in a child who is already working on balance, and it is the reason indoor shoes matter as much as outdoor ones here.

Socks that go under an SMO → If the brace is a taller AFO →

The specification

Four features, and no special shoe required

Worth hearing plainly, because the market would prefer you did not: a special shoe is not necessary to accommodate an SMO. Four ordinary features do most of the work.5

Wide or extra-wide

The brace adds width across the whole foot, so a wider fitting of the same model beats a longer one every time. Extra-wide is frequently not stocked in stores and has to be ordered.6

A deep toe box

Depth over the instep, not length at the toe. This is the measurement that decides whether the shoe closes over the brace.5

A removable insole

Taking the factory insole out frees real depth in seconds and costs nothing.5 Do it before you decide a shoe has failed.

A large opening

How wide the shoe opens decides whether mornings are a two-minute job or an argument.5 Hook-and-loop straps with real range, or a zip that folds the upper flat, both solve it; laces on a conventional upper do not.

Sizing

How much bigger, as numbers

“Go up a couple of sizes” is the advice everyone gives and it is not shoppable. The honest answer depends on whether the shoe was designed around a brace.

An ordinary structured shoe: one and a half to two sizes

Fitting guidance for a standard supportive trainer such as the New Balance 990v6 is one full size up for a foot orthotic and one and a half to two sizes up for an SMO or AFO.6 That gap is the price of making a shoe built for a foot hold a brace as well.

A shoe built for braces: half a size

Where the shoe opens flat, you fit it to the brace instead of the foot. Billy is fitted at half a size longer than the footplate, and its wraparound zip opens the upper completely flat.6

Hook-and-loop options built for this

The Stride Rite M2P Journey 3.0 Adapt uses extended straps that open wider than a standard shoe and is designed around SMOs and AFOs. Memo Gabi is a firmer orthopedic option with a strong heel counter, ordered about half a size longer for growing room.6

The measurement to take

Stand the SMO on a sheet of paper and draw around it. That outline, not your child’s foot, is what every figure above is measured against.

The first two weeks

Building up wear, and reading the skin

New braces are introduced gradually, and knowing the schedule stops a normal first week being mistaken for a shoe that does not fit.

An hour more each day

One to two hours on the first day, two to three on the second, adding roughly an hour daily from there.5 Check the skin after the first hour and at each step up.

What normal redness looks like

Light redness around the arch, the instep and the bony points of the foot and ankle is expected, and it should fade within twenty to thirty minutes.5

What is not normal

Redness still present after half an hour, or any blistering or bruising, means the brace does not go back on and the orthotist gets a call.5 That is a fitting appointment, not a shopping problem, and no shoe or sock solves it.

Shoes for SMO braces

How many sizes up for a shoe over an SMO?

About one and a half to two sizes up in a standard structured shoe, against one size for a plain foot orthotic. In a shoe designed to open flat, such as Billy, it is half a size longer than the brace footplate. Going wider usually beats going longer.

Can my toddler wear an SMO without shoes?

No. Wear and care instructions are explicit that an SMO should never be worn without shoes, and on hard floors the plastic becomes slippery, which is a falls risk for a child already working on balance.

Why will the SMO not go into the shoe?

Check the brace before the shoe. If the heel is not fully seated at the bottom of the SMO it adds height and length the shoe cannot absorb. Bend the knee to about ninety degrees, scoop the foot in from behind and underneath, then fasten the instep strap first.

What are the best shoes for SMOs?

The ones with a removable insole for depth, a firm heel counter, an opening that folds back to the heel, a low soft collar and a forefoot that still bends. Those five features matter far more than the brand, and a shoe missing two of them will not work no matter whose name is on it.

Do shoes for SMO braces need to be a bigger size?

Usually a little wider or deeper, not longer. Going up two full sizes is a common workaround for a shallow shoe, and it causes its own problems: a foot with room to slide lets the brace rotate and the heel lift. Fit with the brace on and buy depth, not length.

Why does my child’s heel keep lifting out of the shoe?

Almost always a soft heel counter. An SMO controls the heel from below and the sides but nothing holds it down into the shoe except the shoe, so a back that flexes lets the whole brace ride up with each step. Squeeze the heel of the shoe. It should barely move.

What is the difference between SMO shoes and AFO shoes?

An AFO is tall and holds the ankle still, so its shoe needs height, a wide throat and a stiff sole. An SMO stops above the ankle bones and leaves the ankle free, so its shoe needs depth, a firm heel and a forefoot that still bends. Using AFO advice for an SMO usually produces a shoe that is too rigid and too tall.

Is there an alternative to an SMO brace?

Foot orthoses, AFOs and supportive boots all exist, but they control different things and are not interchangeable. Which one a child needs depends on where the control has to come from, and that is an orthotist’s call. Trim lines, padding and strapping can often be adjusted without changing the brace type.

Can my child wear normal shoes with SMOs?

Sometimes, if the shoe happens to be deep, has a removable insole and a firm heel. Most off-the-shelf children’s shoes are too shallow and too soft at the back, which is why families end up searching for specific ones. It is not that SMOs need anything exotic.

Sources

Where this comes from

1 Orthotics and bracesAAOS OrthoInfo 2 Diagnosis and Treatment of Idiopathic Congenital ClubfootPediatrics, 2022 3 Clubfoot overview and treatmentAAOS OrthoInfo 4 ClubfootMedlinePlus, US National Library of Medicine 5 Supramalleolar orthosis (SMO) wear and care instructionsRebound Orthotics and Prosthetics 6 Clinical shoe recommendations by orthotic typePedorthic fitting reference

Keep going

Shoes over an AFO →The taller brace, and why the rules change. Socks under a brace →Where most of the rubbing actually starts. Fit and rubbing →When the brace, not the shoe, needs the change.

If the SMO itself is the problem rather than the shoe over it, see SMO alternatives.

There is a video version of this comparison if you would rather see the shoes than read about them . Watch it on YouTube, or see the rest of the channel.