Custom Insoles for Diabetic Patients in India – What You Need to Know

By Pro-Ortho Perfect India | Foot Care Specialists, Thane & Pune

India has the second largest diabetic population in the world — over 77 million people living with diabetes, a number projected to cross 100 million by 2030. Among the many complications of long-term diabetes, diabetic foot disease is one of the most serious, most preventable, and most underappreciated.

Every 30 seconds, a leg is amputated somewhere in the world as a consequence of diabetes. In India, diabetic foot complications are the leading non-traumatic cause of lower limb amputation. The vast majority of these amputations are preventable — and custom diabetic insoles are one of the most powerful preventive tools available.

Why Diabetic Feet Are at Risk

Two complications of diabetes make the feet uniquely vulnerable:

1. Peripheral Neuropathy — Loss of Sensation

High blood sugar over time damages the peripheral nerves, leading to loss of sensation in the feet — particularly pain, pressure, temperature, and vibration. A patient with severe neuropathy may step on a nail, develop a blister from ill-fitting footwear, or sustain a burn from a hot surface — without feeling anything. By the time the wound is noticed, it may already be infected.

2. Peripheral Vascular Disease — Reduced Blood Flow

Diabetes accelerates atherosclerosis (hardening of arteries), reducing blood flow to the extremities. Poor circulation means wounds heal slowly, infections spread rapidly, and tissue death (gangrene) can occur. The combination of neuropathy and poor circulation is particularly dangerous.

How Custom Diabetic Insoles Protect the Foot

A standard footwear insole provides cushioning and arch support. A custom diabetic insole does something more specific and more critical: it redistributes plantar pressure — taking load away from the high-risk areas where ulcers develop and spreading it evenly across the entire foot surface.

Custom vs Off-the-Shelf Diabetic Insoles

Pharmacies and medical shops sell standard "diabetic insoles" — typically MCR (Microcellular Rubber) or foam insoles in generic sizes. These provide some benefit over bare footwear, but they have significant limitations:

• Generic sizing means the pressure redistribution is approximate, not precise
• They cannot accommodate individual deformities (each diabetic foot is anatomically unique)
• They compress and lose function quickly — often within 3–4 months
• They are not based on a pressure assessment of your specific foot

Custom insoles fabricated by a qualified orthotist after a biomechanical assessment are calibrated to your specific foot — its pressure map, deformities, gait pattern, and footwear. The difference in protective efficacy is significant, especially for high-risk feet.

Materials Used in Custom Diabetic Insoles

• Plastazote (EVA foam) — the gold standard base material for diabetic insoles. Heat-mouldable, extremely low density, excellent pressure distribution, hypoallergenic. Available in multiple densities (soft for neuropathic feet, medium for general use).
• PPT (Poly Puff Technology) — a viscoelastic foam used for impact absorption at the heel and metatarsal heads
• Poron — high-resilience microcellular urethane, used for targeted cushioning at specific pressure points
• Carbon fibre shell — for Charcot foot or very deformed feet requiring a rigid base with a soft top layer
• Leather or moisture-wicking top cover — reduces friction, manages moisture, prevents skin maceration

Daily Diabetic Foot Care — Beyond the Insole

Custom insoles are one part of a complete diabetic foot care protocol. Combine them with:

1. Daily foot inspection — check all surfaces of both feet every evening using a mirror. Look for redness, blisters, cracks, colour changes, swelling, or any wound.
2. Wash and dry carefully — wash with lukewarm water, dry completely especially between toes. Never use hot water.
3. Moisturise the soles and heels — not between toes. Dry cracked skin is a portal for infection.
4. Cut nails straight across — never cut down the sides. Better still, have a podiatrist or nurse trim nails.
5. Never walk barefoot — not even at home. Always wear your diabetic footwear and custom insoles.
6. See a foot specialist every 3–6 months — even without symptoms. Regular professional inspection catches early problems before they become emergencies.

What to Expect at a Custom Insole Assessment at Pro-Ortho

1. Full foot examination — sensation testing, skin inspection, circulation check, structural assessment
2. Gait analysis — observation of your walking pattern and identification of high-pressure areas
3. Foot casting or foam impression box — captures the exact contour of your foot
4. Material selection — based on your risk level, deformities, and footwear
5. Fabrication — insoles made in our in-house laboratory, typically within 5–7 days
6. Fitting and review — you walk in the insoles in clinic; adjustments made if needed
7. Follow-up at 6 weeks and 6 months

Frequently Asked Questions