Plantar fasciitis insoles, backed by university research
A Plantar Fascial Groove proven to reduce the strain that causes plantar fasciitis — at p<0.001, La Trobe University. Same design features as $500–$1,000 custom orthotics.
🎓 8 independent university studies
🔬 Plantar Fascial Groove proven effective at p<0.001
📊 90% of cases resolve with conservative treatment
Recognise any of these?
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Sharp, stabbing pain under the heel first thing in the morning
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ain returns after sitting, then eases with walking
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Tender to touch on the inside of the heel
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Worse after exercise — not during it
Two or more of these? You likely have plantar fasciitis — one of the most treatable foot conditions.
It's not your arch shape. It's the pull on your fascia.
Every step tightens your plantar fascia to lift the arch and push you forward. When pronation forces are excessive, the fascia is repeatedly overstretched — causing the strain you feel as plantar fasciitis.
Interpod's Plantar Fascial Groove reduces the force needed to activate that natural mechanism, easing the load on the fascia itself.
La Trobe University: statistically significant reduction in windlass mechanism force at all angles tested (p<0.001).
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New · Finds your support level
Model P+
- Regular price
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$135.00 - Regular price
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- Sale price
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$135.00
Quick answers
Do orthotics actually help plantar fasciitis?
Yes — but only ones that address the mechanical cause. Interpod's Plantar Fascial Groove is proven (p<0.001) to reduce the strain that causes the pain, not just cushion the heel.
Is this as good as custom orthotics?
La Trobe University found no difference in comfort or fit between Interpod and custom-made devices — at a fraction of the $500–$1,000 price.
Is my heel spur causing the pain?
Almost certainly not. Only 1 in 20 people with heel spurs experience any pain — it's a consequence of fascia stress, not the cause.
What if it doesn't work for me?
You're covered by a 90-day full refund guarantee. Trial it risk-free.