Over-pronation — the root cause of most foot pain

Over-pronation isn't a condition — and it isn't about how far your foot rolls in. It's about the force behind that motion, which is what drives most foot, leg, knee, and back pain. Interpod orthotics are engineered to resist that excessive pronation force and assist supination — proven by 8 independent university studies.

🎓 8 independent university studies

🔬 The most effective prefabricated orthotic tested at controlling rearfoot position — La Trobe University

📊 4 biomechanical design features — same as custom orthotics

Does this sound like you?

Recognise any of these symptoms?

  • Shoes wear down unevenly — especially on the inside edge

  • Heels visibly tilt inward when standing (viewed from behind)

  • Low or collapsed arches when standing

  • Recurring foot, ankle, shin, knee, or back pain

  • Pain that increases with activity and improves with rest

  • Have been told you have flat feet, fallen arches, or over-pronation

Over-pronation is the single most common biomechanical factor in foot and lower limb pain. If you've been told you over-pronate — or if you recognise these signs — biomechanical support with orthotics is the standard treatment approach.

A close-up rear view of a person running on an outdoor track, wearing light olive leggings and pink running shoes with red outsole details.

Understanding Your Pain

What is over-pronation and why does it matter?

Pronation is a natural and essential part of gait — it's how the foot absorbs impact after heel strike. The foot rolls inward, the arch flattens, and the tissues absorb shock. This is normal.

Over-pronation occurs when this inward rolling is excessive in magnitude or duration. The arch collapses too far, the calcaneus everts too much, and the tibia rotates internally beyond its normal range. This creates a cascade of excessive forces up the kinetic chain.

The consequences of over-pronation:

At the foot: plantar fasciitis, heel pain, arch pain, bunions, and posterior tibial tendon overload.

At the leg: shin splints (MTSS), Achilles tendinopathy, and calf strain.

At the knee: patellofemoral pain (runner's knee), ITB syndrome, and medial knee stress.

At the hip and back: compensatory hip rotation and pelvic tilt, contributing to hip pain and lower back pain.

The position of the subtalar joint axis determines how much pronation force the foot generates. A more medially positioned axis — which is genetic and cannot be changed — creates greater pronation force. This is why some people develop problems and others don't, even with similar foot shapes.

Why Interpod is designed specifically for over-pronation

Every Interpod orthotic is built around the Rearfoot Wedge — a design feature that inverts the calcaneus and directly resists the pronation force at its source. Combined with three additional features that assist supination, Interpod addresses both dominant motions of gait. La Trobe University research confirmed Interpod is the most effective prefabricated orthotic at controlling rearfoot position.

Your Treatment Plan

Your path to healing — step by step

Jump in at the stage that matches where you are right now.

Where are you right now?

Select the stage that best describes your situation — we'll take you straight there.

"I've just been told I over-pronate" New to this — show me what it means and what to do "I've tried supportive shoes and off-the-shelf insoles" Doing the basics but my feet still roll in "I've tried everything — I need lasting support" Looking for a real, long-term solution "A practitioner recommended orthotics for over-pronation" I've been assessed — take me straight to the orthotic recommendation
1

Understanding your feet

Over-pronation is about forces, not foot shape

Two people with identical foot shapes can have very different levels of pronation force — because force is determined by subtalar joint axis position, not arch height. This is why the correct level of orthotic support varies between individuals.

  • Low pronation force - (laterally positioned axis) — may only need Low arch support, even with visibly flat feet.

  • Moderate pronation force - Moderate arch support provides the right balance of correction and comfort.

  • High pronation force - (medially positioned axis) — needs Maximum arch support for sufficient pronation resistance.

  • The Model P+ - lets you determine which level is right for your individual foot — at home, using the same progressive trial approach podiatrists use in clinic.
2

The solution — Biomechanical support

Four design features that work together

Generic "pronation control" insoles typically only have a medial post or arch wedge. Interpod addresses pronation and supination throughout the entire gait cycle with four features working together.

  • Rearfoot Wedge - the primary pronation-resisting feature. Inverts the calcaneus and changes rearfoot position more effectively than any competing prefabricated orthotic (La Trobe University).

  • Rearfoot Wedge - the primary pronation-resisting feature. Inverts the calcaneus and changes rearfoot position more effectively than any competing prefabricated orthotic (La Trobe University).

  • 1st Cutaway - allows natural first ray plantarflexion, enabling efficient push-off without compensatory pronation.

  • Plantar Fascial Groove - reduces windlass mechanism force (p<0.001), helping the foot supinate earlier and more efficiently.

Generic insoles have one feature. Custom orthotics have all four. So does Interpod — at a fraction of the cost.The Rearfoot Wedge resists pronation. The Cuboid Notch, 1st Cutaway, and Plantar Fascial Groove assist supination. Together, they address both dominant motions throughout every step.

Model P+

Model P+

The Model P+ — Recommended

Trial all three support levels at home. Find the one that feels right, let us know, and your matching Model P ships free.

$135AUD — Includes your selected Model P support level.

Model P for Pain

Model P for Pain

Model P Pain — If you know your support level

For returning customers, practitioner recommendations, or reorders.

$85AUD per pair

3

Ongoing — Long-term management

Over-pronation doesn't go away — but it can be managed

  • Wear the Model P daily - the pronation forces are present with every step. Consistent use is the key to staying pain-free.

  • Maintain calf flexibility - tight calves force compensatory pronation. Stretch daily.

  • Strengthen foot and hip muscles - intrinsic foot exercises and hip strengthening reduce the reliance on passive structures.

  • Choose supportive footwear - the orthotic works best in shoes with a firm heel counter. Avoid flat, unsupportive shoes.

  • Consider multiple pairs - many customers have a Model P in their everyday shoes and a Model S in sports shoes and Mode SF for tight fitting footwear.
Model S for Sport

Model S for Sport

Model S

Lighter and more comfortable over distance.

$75AUD per pair

Why Interpod Works

Four design features that lower strain on your feet

Interpod uses the same four features found in custom orthotics so the windlass can tighten the arch — instead of muscle, tendon, ligament and fascia doing all the work.

  • Plantar Fascial Groove ★

    A groove engineered into the orthotic to accommodate the plantar fascia. Reduces the force needed to establish the windlass mechanism — the foot's natural arch-raising system. Directly reduces the strain that causes plantar fasciitis.

    Assists supination
    Research: La Trobe University — statistically significant at all angles (p<0.001).

  • Rearfoot Wedge ★

    Resists the excessive pronation forces that over-flatten the arch and overload the plantar fascia. By inverting the calcaneus, it reduces the strain transmitted to the fascia during loading.

    Resists pronation
    Research: La Trobe University — more effective at changing rearfoot position than competing orthotics.

  • 1st Cutaway

    Allows the first metatarsal to plantarflex naturally during push-off, enabling the windlass mechanism to function properly without interference from the orthotic.

    Assists supination

  • Cuboid Notch

    Assists supination during the transition from midstance to push-off, stabilising the lateral column. Typically only found in custom-made orthotics.

    Assists supination

Common Questions

Over-Pronation FAQs

Can over-pronation be fixed?

Over-pronation is a structural and biomechanical characteristic — it can't be changed. But it can be effectively managed with orthotics that control the excessive forces. The goal isn't to eliminate pronation (which is a normal and necessary part of gait) but to reduce it to a level your tissues can tolerate without pain or injury.
Do I need motion control shoes AND orthotics?

Not necessarily. Motion control shoes provide some pronation resistance, but it's built into the shoe's midsole and can't be adjusted to your individual foot. An Interpod orthotic in a neutral or stability shoe often provides more precise, personalised control than a motion control shoe alone. The key is a shoe with a firm heel counter — the orthotic does the rest.
Why is Interpod better than other pronation control insoles?

Most pronation control insoles have one or two features — typically a medial post or an arch wedge. Interpod has four biomechanical design features (Rearfoot Wedge, Cuboid Notch, 1st Cutaway, Plantar Fascial Groove) that address both pronation resistance and supination assistance throughout the entire gait cycle. La Trobe University confirmed Interpod is the most effective prefabricated orthotic at changing rearfoot position compared to Vasyli, Spenco, Dr Scholl, Orthaheel, and others.
Which arch height is right for over-pronation?

The correct level depends on the pronation force your foot generates — determined by subtalar joint axis position, not arch height or pain level. The Modular System ($119) lets you trial all three levels to find the minimum effective support. Start with Low — it's the most comfortable and fits the widest range of shoes. Only increase if symptoms don't resolve.
What if the orthotics don't help?

You're covered by our 90-day full refund guarantee. If pain persists despite orthotics, there may be additional factors contributing to your symptoms — consult a podiatrist for a comprehensive assessment. Contact us at help@interpod-orthotics.com.

Related Conditions

Interpod also treats

Achilles Tendinopathy Arch Pain Bunions Flat Feet Heel Pain Heel Spurs High Arches Hip Pain ITB Syndrome Knee Pain Lower Back Pain Metatarsalgia Morton's Neuroma Plantar Fasciitis PTTD Running Injuries Runners Knee Shin Splints

Start your path to lasting relief today

Australians have discovered that the right support can make everyday movement easier. Find the Interpod orthotic that suits your needs.

Get the Model P+ — $135 → Shop full range →

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