Plantar fasciitis — your path to healing

From immediate pain relief to long-term biomechanical correction. We'll guide you through every stage of recovery — backed by university research and 25 years of podiatry science.

🎓 8 independent university studies

🔬 Plantar Fascial Groove proven effective at p<0.001

📊 90% of cases resolve with conservative treatment

Does this sound like you?

Recognise any of these symptoms?

  • Sharp, stabbing pain under the heel first thing in the morning

  • Pain returns after sitting or resting, then eases with walking

  • Tender to touch on the inside of the heel

  • Pain that's worse after exercise — not during it

  • Stiffness and aching in the arch of the foot

  • Pain that's been coming and going for weeks or months

If you recognise two or more of these, you likely have plantar fasciitis. The good news: it's one of the most treatable foot conditions — and you're in the right place.

Man sitting on bed holding his foot in pain

Understanding Your Pain

What's really causing that morning pain?

The plantar fascia is a thick band of tissue running from your heel bone to the base of your toes. It supports your arch, absorbs shock, and plays a critical role in the windlass mechanism — the foot's natural system for stabilising during push-off.

When pronation forces are excessive, the fascia is repeatedly overstretched during each step. Over time, this causes micro-tears and degeneration at the attachment point on the heel bone.

Why does it hurt most in the morning? During sleep, your foot relaxes into a pointed-down position. The fascia shortens and contracts overnight. Inflammatory fluid pools around the damaged tissue. When you take your first steps, the sudden stretching of the contracted, swollen fascia causes that sharp, stabbing pain. As you walk, blood flow increases, the fascia warms, the inflammation disperses — and the pain eases. Until you rest again.

This cycle of damage → inflammation → rest → re-injury is what makes plantar fasciitis so persistent. Breaking the cycle requires both managing the inflammation AND addressing the biomechanical forces that caused it.

The bone spur myth

Many people believe their heel pain is caused by a bone spur. In reality, 1 in 10 people have heel spurs — but only 1 in 20 with spurs experience any pain. The spur is a secondary calcium deposit that forms in response to chronic fascia stress. It's a consequence, not a cause. Removing the spur without addressing the underlying fascia problem rarely resolves the pain.

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 just started getting heel pain" New symptoms, haven't tried much yet — show me what to do right now "I've been managing it — stretching, icing, painkillers" Had it for a few weeks, doing the basics but it keeps coming back "I've tried everything — nothing has worked long-term" Months of pain, tried insoles, physio, stretching — need a real solution "A practitioner told me I need orthotics" I've been assessed — take me straight to the orthotic recommendation
1

Right now — reduce the inflammation

Immediate pain relief

Your first priority is to reduce the inflammatory fluid that's causing the acute pain.

  • Rest- reduce weight-bearing activity where possible. Avoid running and high-impact exercise temporarily.

  • Ice- roll a frozen water bottle under your arch for 15–20 minutes, 3–4 times daily. Especially effective after any activity.

  • Anti-inflammatory medication- NSAIDs (ibuprofen or naproxen) or topical anti-inflammatory cream. Consult your pharmacist for advice.

  • Massage ball- roll a tennis ball or massage ball under the arch to improve blood flow, loosen the fascia, and break up adhesions.

  • Avoid going barefoot- especially on hard floors. Even around the house, wear supportive footwear or slippers with arch support.
2

This week — Support and protect

Create the right environment for healing

While managing the inflammation, you need to reduce the ongoing mechanical stress on the fascia. Footwear and stretching are your two most important tools at this stage.

  • Wear structured, supportive shoes— lace-up shoes with a firm heel counter and some arch support. Avoid flat shoes, thongs, ballet flats, and worn-out footwear.

  • Stretch daily— calf stretches (lean against a wall, straight back leg, heel on the ground, hold 30 seconds each side) and plantar fascia stretches (cross affected foot over opposite knee, pull toes back toward shin, hold 10 seconds, repeat 10 times). Do these before your first steps in the morning and after any period of sitting.

  • Night splint— keeps the fascia gently stretched while you sleep, preventing the overnight shortening that causes morning pain. Uncomfortable at first but highly effective.

  • Soft heel cup— provides immediate cushioning at the pain site. A short-term measure to reduce heel impact while the fascia heals.
3

Weeks 2–6 — Active rehabilitation

Strengthen and rebuild

Once the acute inflammation settles, active rehabilitation strengthens the tissues and improves the foot's capacity to handle load. This is also where a cushioning insole can help protect the healing fascia during daily activity.

  • Physiotherapy— if pain persists beyond 2 weeks, a physiotherapist can provide manual therapy, assess your gait, and design a targeted strengthening programme.

  • Progressive loading— heel raises (start with both feet, progress to single leg) strengthen the calf-Achilles-fascia complex. Start with 3 sets of 12, every other day.

  • Intrinsic foot exercises— toe curls, toe yoga (alternating big toe and little toes), and towel scrunches to strengthen the small muscles that support the arch.

  • Continue stretching— maintain the daily calf and fascia stretching programme from Step 2.
Model C for Comfort

Model C for Comfort

Model C - Comfort

Cushioning insole for shock absorption and comfort during the healing phase. Polyurethane — 50% more shock absorbing than EVA. Reduces impact loading while the fascia recovers.

$65 AUD

4

The long-term solution — Address the cause

Biomechanical correction with the Model P

Steps 1–3 treat the symptoms and help the fascia heal. But if the biomechanical forces that caused the overload aren't addressed, the cycle will repeat. This is where the Model P enters — it's not just a support, it's a correction.

  • Rearfoot Wedge— resists the excessive pronation forces that over-flatten the arch and over-stretch the plantar fascia during loading.

  • Plantar Fascial Groove— reduces the force needed to activate the windlass mechanism, allowing the foot to support its own arch more efficiently. Proven at p<0.001.

  • 1st Cutaway— allows the big toe joint to function naturally during push-off, enabling the windlass mechanism without interference.

  • Cuboid Notch— assists supination during the transition to push-off, stabilising the lateral column

If you don't address why it happened, it will happen again. The Model P prevents the arch from over-flattening and the plantar fascia from over-stretching — the same biomechanical correction used in $400+ custom orthotics, at a fraction of the cost.

Model P+

Model P+

The Model P+ — Recommended

Not sure which support level you need? Trial all three at home. Your matching Model P+ ships free when your discomfort resolves.

$135AUD — includes your Model P+

Model P for Pain

Model P for Pain

Model P - ready to wear

The support most people are looking for, ready to wear. Ideal if Moderate suits you or your practitioner has confirmed your level. If you need Low or High, choose Model P+ to find yours by trial.

$85 AUD per pair

5

Ongoing — Maintain and prevent recurrence

Stay pain-free

Once your plantar fasciitis has resolved, the Model P continues to work preventively — reducing the biomechanical stress that caused the condition in the first place.

  • Continue wearing the Model P daily— the biomechanical forces don't change just because the pain has resolved. The orthotic continues to protect the fascia.

  • Maintain flexibility— continue calf and fascia stretching several times per week.

  • Gradual return to full activity— increase training load progressively, not suddenly.

  • Replace top covers as needed— the Model P comes with replaceable self-adhesive top covers. The orthotic itself is covered by a 5-year warranty.

Why Interpod Works

Four design features that resist pronation and assist supination

Generic insoles only have arch support. Interpod has four biomechanical design features — the same features found in custom orthotics costing $500+.

  • 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.

    Assits 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.

    Assits supination

  • Cuboid Notch

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

    Resists pronation

University Research

Proven results — not marketing claims

  • p<0.001

    Plantar fascial groove significantly reduced windlass mechanism force at all angles tested.

    LA TROBE UNIVERSITY

  • = Custom

    No difference in comfort or fit vs custom-made orthoses. Zero Interpod devices needed adjusting.

    LA TROBE UNIVERSITY


  • 90%

    Of plantar fasciitis cases resolve with conservative treatment including orthotics, stretching, and load management.

    CLINICAL LITERATURE

Common Questions

Plantar Fasciitis FAQs

Do orthotics actually help plantar fasciitis?

Yes — but not all orthotics are equal. Generic insoles with arch support alone don't address the pronation forces that cause plantar fasciitis. Interpod orthotics include four specific biomechanical design features — including a Plantar Fascial Groove proven to improve the windlass mechanism at p<0.001 — that target the biomechanical causes, not just the symptoms.
Should I get custom orthotics for plantar fasciitis?

Research from La Trobe University found no difference in comfort or fit between Interpod prefabricated orthotics and custom-made devices. Interpod includes the same four biomechanical design features found in custom orthotics at a fraction of the cost ($85–$119 vs $200–$1,000+). Start with the Modular System to find your ideal arch height before committing.
Which arch height is best for plantar fasciitis?

The ideal arch height depends on your individual foot biomechanics — specifically, the position of your subtalar joint axis — not the severity of your pain. A person with severe plantar fasciitis may only need a Low arch if their foot has a laterally positioned axis. The Modular System ($119) lets you trial all three arch heights to find the one that resolves your discomfort — the same clinical approach podiatrists use.
Why does plantar fasciitis hurt most in the morning?

During sleep, your foot relaxes into a pointed-down position, which shortens the plantar fascia. Inflammatory fluid pools around the damaged tissue overnight. When you stand, the sudden stretching of the contracted, swollen fascia causes that sharp stabbing pain. As you walk, blood flow increases, the fascia warms and loosens, and the inflammation disperses — which is why the pain eases with movement.
Is my heel spur causing the pain?

Almost certainly not. 1 in 10 people have heel spurs, but only 1 in 20 with spurs experience any pain. The spur is a calcium deposit that forms in response to chronic fascia stress — it's a consequence, not a cause. Treating the fascia overload (with appropriate orthotic support and rehabilitation) resolves the pain regardless of whether a spur is present.
How long does it take to recover from plantar fasciitis?

Most people notice improvement within 2–6 weeks of starting a structured treatment plan (stretching, appropriate footwear, and orthotic support). Full resolution may take 3–6 months depending on severity and duration. Research shows that 90% of cases resolve with conservative treatment. The key is consistency — daily stretching, wearing your orthotics, and addressing the biomechanical cause.
What if the orthotics don't help?

You're covered by our 90-day full refund guarantee. If the Modular System doesn't resolve your discomfort, return it for a full refund. If your pain persists after trialling all three arch heights, we recommend consulting a podiatrist or physiotherapist — you can also contact us at help@interpod-orthotics.com for guidance.
Can I start using orthotics while my plantar fasciitis is still acute?

Yes. The Model P can be used during the acute phase alongside the relief measures in Step 1 (ice, rest, anti-inflammatories). However, many practitioners recommend using a softer cushioning insole like the Model C ($65) during the initial healing phase, then transitioning to the Model P for long-term biomechanical correction once the acute inflammation settles.

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 Over-Pronation 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.

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