5 Foot Care Rules Every Diabetic Patient Must Follow to Prevent Gangrene

The best treatment for gangrene is preventing it from developing in the first place. These five evidence-based foot care rules can dramatically reduce a diabetic patient's risk of foot wounds, infections, and ultimately amputation.

Rule 1: Inspect Your Feet Every Single Day

Diabetic neuropathy means you may not feel wounds forming. Make a daily ritual of inspecting every part of both feet — including the soles, heels, and between every toe. Use a mirror for the sole or ask a family member to help. Look for: cuts, blisters, redness, swelling, warm spots, or any change in skin colour. Report anything to your doctor immediately if it has not resolved within 24 hours.

Rule 2: Never Go Barefoot

Never walk barefoot — indoors or outdoors. A small stone, a nail, or a rough floor tile can cause a wound you cannot feel. Wear well-fitted diabetic footwear or wide, soft shoes at all times. Avoid tight shoes, pointed shoes, or shoes with hard seams inside. Check inside your shoes for any foreign objects before wearing them.

Rule 3: Keep Your Blood Sugar Controlled

Elevated blood sugar directly damages both blood vessels (accelerating PAD) and nerves (causing neuropathy). Every 1% reduction in HbA1c reduces the risk of vascular complications by approximately 25%. Aim for an HbA1c below 7%. Work with your diabetologist to optimize your diabetes medications and lifestyle.

Rule 4: Stop Smoking — Non-Negotiable

Smoking doubles the risk of peripheral artery disease and quadruples the risk of amputation in diabetics. Nicotine causes sustained constriction and damage to the small blood vessels in the feet. If you smoke and have diabetes, you are in the highest-risk category for gangrene. Quitting smoking is the single most impactful step after blood sugar control.

Rule 5: Get an ABI Test Annually

The Ankle-Brachial Index (ABI) is a simple, painless 15-minute test that compares blood pressure at the ankle with the arm — detecting PAD before symptoms appear. An ABI below 0.9 means significant PAD is present. Early detection allows treatment before wounds develop. Every diabetic patient over 50 — and anyone with diabetes plus smoking or hypertension — should have this test annually.

When to Seek Immediate Care

Despite best foot care, if you develop a non-healing wound, seek vascular assessment immediately. Timely gangrene treatment from a specialist doctor in Lucknow can mean the difference between saving and losing the limb.