Gangrene Treatment in Lucknow Without Amputation

What Is Gangrene?

Gangrene is the death of body tissue caused by a loss of blood supply or a severe bacterial infection. When cells are deprived of oxygen-rich blood, they begin to die — and once tissue is dead, it cannot recover on its own. Gangrene most commonly affects the extremities: toes, feet, fingers, and legs.

In India, the most common form of gangrene is vascular gangrene — caused by blocked arteries in patients with diabetes or peripheral artery disease (PAD). This is also the form most amenable to treatment without amputation. By opening the blocked arteries through angioplasty, blood flow can be restored before the damage becomes irreversible.

Gangrene is not a single disease but a final consequence of severely compromised circulation. Understanding its cause is the key to treating it — and in vascular gangrene, the cause is a blocked artery. That is what Dr. Rohit Agarwal treats.

Types of Gangrene

Understanding which type of gangrene you have determines the treatment approach:

• Dry Gangrene — The most common form in diabetic and PAD patients. Develops slowly as arteries progressively narrow and cut off blood supply. The affected area — usually toes or feet — shrivels, dries out, and turns brown, black, or deep purple. It is less immediately life-threatening than wet gangrene. This is the form that responds best to angioplasty.
• Wet Gangrene — Occurs when bacterial infection invades tissue that has lost blood supply. The area becomes swollen, moist, blistered, and emits a foul smell. Wet gangrene spreads rapidly and is a medical emergency. It requires antibiotics and wound care alongside vascular treatment.
• Diabetic Foot Gangrene — A combination of PAD (blocked leg arteries) and diabetic neuropathy (nerve damage reducing sensation) that allows small wounds to progress undetected to gangrene. India has among the highest rates of diabetic foot amputations in the world — most of which are preventable.
• Gas Gangrene — A rare but rapidly fatal form caused by specific bacteria (Clostridium species) infecting deep muscle tissue. Characterised by gas bubbles under the skin, a crackling sensation, and systemic illness. Requires emergency surgical debridement and antibiotics.

Warning Signs You Should Not Ignore

Gangrene does not always appear suddenly. Recognising the early warning signs can be the difference between saving and losing your limb:

• Colour changes in toes or feet — Pale, bluish, purple, or black discolouration, especially in the toes. This is a danger sign requiring immediate attention.
• Non-healing wound or ulcer — A cut, blister, or sore on the foot or toes that is not healing after 2 weeks. In diabetic patients, this is an emergency signal.
• Cold foot or toes — One foot noticeably colder than the other, especially at night.
• Pain followed by numbness — Severe pain in the affected area, which may later give way to numbness as nerve endings die.
• Foul-smelling discharge — A sign of infection (wet gangrene) — seek help immediately.
• Swelling, blistering, or crackling skin — Suggests wet or gas gangrene — a medical emergency.
• Shrivelling, dry black tissue — Dry gangrene in progress — do not wait; seek vascular evaluation immediately.

If you have diabetes and notice any wound on your foot that is not healing, or any part of your foot turning dark — seek specialist care immediately. Do not wait. Every day matters.

Causes and Risk Factors

Most gangrene cases seen at Medanta Lucknow are caused by blocked leg arteries. The risk factors are:

• Diabetes — The most important risk factor in India. High blood sugar damages arteries (PAD) and nerves (neuropathy), creating the perfect conditions for undetected wounds to progress to gangrene. Diabetic patients face a 10-20x higher amputation risk than non-diabetics.
• Peripheral Artery Disease (PAD) — Atherosclerotic plaque builds up in leg arteries, progressively narrowing them until blood flow is critically reduced. PAD is the direct cause of most vascular gangrene.
• Smoking — One of the strongest risk factors for PAD and subsequent gangrene. Nicotine constricts blood vessels and accelerates arterial plaque buildup.
• High blood pressure and high cholesterol — Both accelerate atherosclerosis in leg arteries.
• Elderly patients — Arterial disease worsens with age, making the elderly particularly vulnerable.
• Previous leg injuries or surgeries — Trauma can damage arteries and compromise circulation.
• Immunosuppression — Patients on steroids, chemotherapy, or with HIV are at higher risk of wet and gas gangrene from infection.

Amputation vs. Angioplasty (Limb Salvage): A Comparison

For decades, amputation was considered the only option when gangrene set in. Today, angioplasty to restore blood flow offers most patients a genuine alternative.

The Cure Without Cut Approach: Limb Salvage Angioplasty

Dr. Rohit Agarwal performs angioplasty and stenting to open blocked leg arteries and restore blood flow to the threatened limb — treating the root cause of vascular gangrene without any surgical cut.

Step-by-step:

1. Assessment: A detailed evaluation including Ankle-Brachial Index (ABI) measurement and CT Angiography or DSA imaging maps the exact location and extent of arterial blockages — from the aorta all the way to the small arteries in the foot.
2. Access: Under local anaesthesia, a tiny needle puncture (2-3 mm) is made in the groin artery. No surgical incision is needed. You remain awake and comfortable throughout.
3. Navigation: A thin guidewire is carefully threaded through the blocked artery under real-time X-ray guidance. Even severely blocked or calcified arteries can often be crossed using specialised equipment.
4. Angioplasty: A tiny balloon catheter is positioned at the blockage and inflated, compressing the plaque against the artery wall and opening up the channel. Drug-coated balloons are used in critical areas to prevent re-narrowing.
5. Stenting (if needed): A metallic mesh stent is placed in the artery to keep it permanently open, ensuring sustained blood flow to the foot and toes.
6. Below-the-knee treatment: For diabetic foot gangrene, Dr. Rohit is skilled in opening tiny arteries below the knee — the peroneal, posterior tibial, and dorsalis pedis arteries — which are critical for foot healing.
7. Confirmation: A final angiogram confirms blood flow has been restored all the way to the foot. Often the foot becomes visibly warmer and better-coloured within minutes of the procedure.
8. Wound care: Once blood flow is restored, wound healing can begin. The team coordinates with wound care specialists to manage the gangrenous area with appropriate dressings.

The procedure typically takes 1-3 hours. Most patients notice an immediate improvement — warmer foot, less pain, better colour in the toes.

Recovery After Limb Salvage Angioplasty

• Immediately after: Rest for 4-6 hours with the treated leg straight. The groin puncture site is monitored.
• Next day: You can walk around the ward. Most patients notice the foot feels warmer and pain has reduced.
• Days 2-3: Discharge home with antiplatelet medications (aspirin + clopidogrel) and instructions for wound care if applicable.
• Week 1-2: Return to normal daily activities. The gangrenous wound will begin to heal as blood flow improves.
• Wound healing timeline: Depending on the extent of tissue damage, full wound healing may take 4-12 weeks with appropriate wound dressings and medical care.
• Follow-up: Doppler ultrasound at 1 month, 3 months, 6 months, and annually to confirm arteries remain open.

Essential: Strict blood sugar control, quitting smoking, and daily foot care are critical to long-term success.

Frequently Asked Questions