Buying guide · Orthotics & accessories

Toe Spacers: Do They Work, and How to Use Them — A Foot Surgeon’s Guide

Testing status: no toe spacer has yet been through the Podiatrist Tested measurement protocol, so nothing on this page carries a score or a seal. What follows is the clinical reasoning I use with patients every week — what a spacer can physically change, what the published trials actually found, who should wear one, and which type to buy for the job you want it to do.

What a toe spacer physically changes

A toe spacer is a piece of silicone or gel that sits between the toes and holds them apart. That is the whole device. What makes it interesting is why holding the toes apart does anything at all.

Most shoes taper towards the front. Years of that taper push the big toe inwards towards the second toe and squeeze the smaller toes together. Three things follow. The long tendons that run to the big toe start pulling from a slightly off-centre position, which nudges the toe further inwards on every step — the mechanism behind a bunion getting worse. The small muscles that should hold the toe straight (the abductor hallucis on the inside of the foot is the main one) become weak and stretched because they never get to work in their proper range. And the nerves and joint capsules between the metatarsal heads spend the whole day compressed, which is how a Morton’s neuroma or a capsulitis stays irritated.

A spacer interrupts all three. With the toes held in a spread position, the big-toe tendons pull in a straighter line, the abductor hallucis is put back at a working length, and the space between the metatarsal heads opens up so the nerve stops being pinched. None of this changes the bone. A bunion is a bone that has moved, and silicone does not move bone. What a spacer changes is the soft tissue around the joint and the load going through it — which is exactly where pain and progression come from.

That distinction explains almost every argument people have about these devices. The people who say they work are usually talking about pain and comfort. The people who say they are a scam are usually talking about the before-and-after photos. Both are right.

What the trials found

There is more research here than most people expect, and less certainty than the marketing implies. Two pieces of it are worth your time.

The systematic review. In December 2024, the Journal of Clinical Medicine published a review that screened just over a thousand papers and pulled out the ten that actually tested toe separators. Most studied adults with hallux valgus — bunions — with individual studies running from nine to ninety participants. Pooled across those studies, orthoses using a toe separator reduced the big-toe angle by roughly 2.1° to 5.79°, and pain scores fell consistently. There were also findings outside the bunion population: in stroke patients, separators improved walking speed and cadence, and soft separators measurably increased activity in the tibialis anterior muscle. The authors were direct about the limitations — the studies are small, they use different devices, different wear schedules and different measurement methods, and many report their own methodology poorly. Their conclusion was that separators have “potential value” in conservative treatment and that better-quality research is still needed.

The exercise trial that found nothing extra. A 2026 randomised controlled trial in Applied Sciences took 25 healthy young adults and gave them all a six-week foot-strengthening programme, 22 sessions on alternate days. Half wore a silicone spacer between the big toe and second toe during the exercises; half did not. Both groups improved their big-toe alignment, their big-toe range of motion and their ankle dorsiflexion. The spacer group gained nothing extra — and on passive big-toe motion the exercise-only group actually did slightly better. Two things matter here: these were healthy feet without bunions, and the spacer was worn only for the length of each exercise session. What that study tells you is that a spacer is not a substitute for strengthening, and it is not a shortcut. It does not tell you much about a bunion and a separator worn for hours a night over a year, which is the protocol the older trials used.

Put the two together and the honest summary is this: worn for real hours over real months, a toe separator reduces forefoot pain reliably and nudges a moderate bunion’s angle by a few degrees. Nobody has shown one straightening a severe bunion. Nobody has shown a spacer worn for twenty minutes a day doing much of anything. And nobody has shown a spacer beating plain foot strengthening — the sensible reading is that you do both.

Who they help, and who they don’t

In clinic, four groups get a clear recommendation to try one.

• Early and moderate bunions. The big toe drifts but you can still push it straight with your fingers. This is the group the trials actually studied, and where the slowing-down effect is worth having — particularly if you are in your thirties or forties and would like to reach sixty without surgery.
• Morton’s neuroma and forefoot nerve pain. Burning or electric pain between the third and fourth toes that eases when you take the shoe off. Spreading the metatarsal heads takes pressure off the nerve directly. A spacer plus a wide shoe plus a metatarsal pad is the complete non-surgical package for this problem.
• Toes that have started to overlap or curl. A second toe riding up over the big toe, or the smaller toes bunching, responds to being held apart before the joints stiffen.
• Anyone who has spent years in narrow shoes and now has forefoot ache at the end of the day. No named diagnosis, just tired, squashed toes. Fifteen minutes in a rest spacer in the evening is genuinely relieving, and it is a low-risk way to find out whether width is your problem.

Three groups get told not to bother, or to be careful.

• A rigid bunion. If you cannot push the big toe straight with your hand, silicone will not do it either. It may still help pain, but set expectations accordingly.
• Hallux rigidus (a stiff, arthritic big-toe joint). A spacer pushes the toe sideways, and a joint that has lost its cartilage can find that painful. Try one for ten minutes at rest and stop if the joint aches afterwards.
• Diabetes with reduced sensation, poor circulation, or fragile skin. A device that presses on skin you cannot feel properly is a wound waiting to happen. Talk to your clinician first, and if you do use one, inspect the skin between the toes every time you take it off.

How to use them without hurting yourself

Most people who give up on toe spacers gave up in the first week, and most of those did too much too soon. The routine that works:

1. Start at ten to fifteen minutes, seated. The first sessions should be on the sofa, not in a shoe. Some aching in the muscles along the inside of the arch is expected — those muscles are being asked to work at a length they have forgotten. Sharp pain in a joint is not expected; stop.
2. Add time in steps. Roughly double the wear each week as long as the skin and joints are settled: fifteen minutes, thirty, an hour, then whole evenings. The studies that moved the angle used hours a day over months, not minutes — so if you want the bunion-slowing effect rather than just end-of-day relief, hours is the target you are building towards.
3. Move to in-shoe wear only in a shoe with a genuinely wide toe box. This is the step most people get wrong. A spacer inside a tapered shoe simply jams the spread toes against the upper and hurts. If the widest point of the shoe is not at the ball of the foot, do not put a spacer in it. Our wide toe box shoe guide explains what to look for.
4. Check the skin between the toes. Silicone against damp skin for hours can macerate it. Dry the feet properly, and if the skin goes white and soggy, cut the wear time back and let it recover.
5. Wash the spacer. Warm water and soap, dry fully. Gel picks up grit that then rubs.
6. Give it three months before judging. Pain relief can be quick. Any change in alignment is slow, and the trials that measured it followed people for months to a year.

The three types, and which does what

Almost every spacer on the market falls into one of three designs, and the design decides how you can use it. Buying the wrong type for the job is the second most common reason people say spacers did not work for them.

1. Rest-only gel separators (the “yoga” style)

A soft gel frame with a loop for every toe, made to be worn barefoot while you sit. YogaToes is the original; the maker says to wear them for about fifteen minutes with shoes off, and that is exactly what they are for. They spread the toes further than an in-shoe spacer can, which makes them the best option for end-of-day relief and for the stretch itself. They are useless inside a shoe — too bulky — and they do not deliver the hours of wear that changed angles in the trials.

2. In-shoe silicone spacers (the “Correct Toes” style)

A firmer, slimmer silicone piece that sits between all four toe gaps and is thin enough to wear inside a wide shoe. Correct Toes, designed by podiatrist Ray McClanahan, is the reference product; the maker’s claims are that it relieves foot pain, aligns bones and joints and strengthens foot muscles — the first is well supported, the second is true within the few-degrees limit above, and the third is only true if you actually walk in them. This type is the one that can log the hours. It is also the most expensive, and it demands a properly wide shoe.

3. Single-gap and bunion sleeves

A small silicone wedge that sits only between the big toe and second toe, sometimes attached to a sleeve that wraps the forefoot. These target the bunion specifically, fit inside more shoes because they add almost no width, and are the type closest to the custom separators used in the bunion trials. They do nothing for the smaller toes and nothing for a neuroma further across the foot.

Which toe spacer to buy

These are named on clinical judgement, not on a bench test — no spacer has been through our measurement protocol yet, and no maker has paid to be mentioned. Prices and claims are the manufacturers’.

The shoe matters more than the spacer

This is the part of the conversation that decides whether any of the above works. A spacer spreads the toes; a tapered shoe squeezes them back together the moment you stand up. If you wear a spacer for an hour in the evening and then spend ten hours in a shoe whose widest point is behind the ball of the foot, the shoe wins ten to one.

The fix is a shoe that is widest at the toes, not at the ball. That is a shape, not a width fitting — a “wide” version of a pointed shoe is still pointed. Take the insole out and stand on it: if your toes spill over the front edges, the shoe is fighting the spacer. The bunion shoe guide and the wide toe box guide cover the models that actually hold a spread forefoot, and for nerve pain the Morton’s neuroma guide adds the metatarsal pad that finishes the job.

Skip it if

• Your big toe will not move when you push it. A rigid bunion or an arthritic joint. A spacer may ease pain but will not change the angle, and can aggravate a stiff joint.
• You have numbness, ulcers, or poor circulation in the feet. Do not put a pressure device on skin you cannot feel without a clinician looking first.
• You only own tapered shoes and are not going to change them. Rest-only wear is still worth something, but the in-shoe products will disappoint you.
• The pain is in the joint itself and worse with the spacer on. That is a joint problem, not a soft-tissue problem, and it needs a different plan.
• You are expecting the bunion to visibly straighten. The trials say a few degrees, slowly. If that is not enough, the honest conversation is about surgery, not silicone.

Where toe spacers stop

A spacer, a wide shoe and a strengthening routine are the complete conservative programme for a bunion or a squashed forefoot, and for a lot of people that programme is enough for decades. Where it stops is the joint: once the big-toe joint is stiff, painful on its own, or the toe is pushing the second toe out of the way, the problem has moved into bone and cartilage and no amount of silicone reaches it. That is the point to have the joint examined and X-rayed and to talk through what a correction would involve. Turning up to that conversation having already done the conservative work properly makes the decision clearer, and it makes the recovery from any surgery easier too, because the small muscles are already working.