VAAFT for Complex Anal Fistula: A Sphincter-Saving Approach

Why Complex Fistulas Need a Careful Approach

An anal fistula is a small abnormal tunnel that connects the inside of the anal canal to the skin near the anus. It usually develops after an anal abscess, an infection of the small glands inside the anal canal, has drained or been treated. Once the tunnel forms, it tends not to heal on its own and often leads to recurring discharge, discomfort, and repeated infections.

Some fistulas are simple, running a short, straight course. Others are complex: they may sit high, branch into several tracts, involve a large part of the anal sphincter muscle, recur after previous surgery, or be linked to conditions such as inflammatory bowel disease. Complex fistulas are more challenging precisely because of their relationship to the sphincter, the ring of muscle that controls continence. Cutting too much of this muscle to clear the fistula risks affecting bowel control, so the goal of modern treatment is to cure the fistula while protecting the sphincter.

VAAFT, or Video-Assisted Anal Fistula Treatment, is one of the sphincter-saving techniques designed with exactly this balance in mind.

Recognising the Symptoms

An anal fistula may cause:

• Persistent or intermittent discharge of pus or fluid near the anus
• Recurrent swelling, abscesses, or a tender lump
• Irritation, moisture, or itching of the surrounding skin
• Discomfort or pain that eases when the fistula drains
• A visible small opening on the skin near the anus

Because these symptoms overlap with other anorectal conditions, a proper examination, sometimes supported by imaging such as an MRI for complex cases, is important to map the tract before any treatment.

What VAAFT Involves

VAAFT is a minimally invasive procedure that uses a fine telescope called a fistuloscope to look inside the fistula tract itself. Rather than working blindly from the outside, the surgeon sees the tunnel from within on a screen. The procedure has two phases.

The diagnostic phase

The fistuloscope is passed along the tract. Under direct vision, the surgeon can:

• Confirm the exact path of the fistula
• Identify the internal opening, where the tract begins inside the anal canal
• Detect secondary branches or hidden side tracts that blind techniques might miss

Finding the internal opening accurately is one of the most important steps in curing any fistula, and seeing it directly is a real advantage.

The operative phase

Once the anatomy is clear, the surgeon:

• Uses energy delivered through the scope to destroy and clean the lining of the tract from the inside
• Clears out infected and unhealthy tissue along the tunnel
• Closes the internal opening, often with sutures or a stapler, so that stool and bacteria can no longer enter the tract

Because the work is done from inside the tunnel and through small access points, there is no need to lay open or cut across the sphincter muscle.

Why It Is Described as Sphincter-Saving

The main worry with any fistula surgery is continence. Traditional operations such as fistulotomy, which lays the tract open, can be very effective for simple, low fistulas but may involve dividing muscle. For complex, high fistulas, cutting muscle carries more risk to bowel control.

VAAFT avoids cutting the sphincter. The tract is treated from within and the internal opening is closed, so the muscle is preserved. This is why it is considered a sphincter-saving option and why it is often discussed for complex fistulas where protecting continence is a priority.

How VAAFT Compares With Other Options

There are several sphincter-preserving approaches, and no single one suits every fistula. Other techniques include the LIFT procedure, which ties off the tract between the muscle layers, seton placement, which uses a soft thread to allow gradual drainage and healing, and fistula plugs or glue. The most suitable choice depends on the tract's height, its branches, the amount of muscle involved, and whether there is active infection.

A key strength of VAAFT is direct internal visualisation, which helps locate the internal opening and any secondary tracts. It also avoids an external wound along the tract. Dr. Satish Reddy typically selects the technique after mapping the fistula carefully, since matching the method to the specific anatomy matters more than favouring any single approach.

Recovery and What to Expect

VAAFT is usually performed under spinal or general anaesthesia and is often a day-care or short-stay procedure. Because there is no large external wound and the muscle is not divided, recovery is generally more comfortable than open fistula surgery. A typical course often includes:

• First few days: Mild discomfort and a small amount of discharge, managed with simple pain relief and hygiene.
• First week to two weeks: Gradual return to normal routine, with sitz baths and wound care as advised.
• Follow-up: Review appointments to confirm the tract is healing and the internal opening has closed.

It is important to be realistic. Fistulas, particularly complex ones, can sometimes recur or need a staged approach, and no procedure can promise a certain cure for every case. Careful follow-up improves the chance of complete healing and lets any issue be addressed early.

When to See a Doctor

You should have an assessment if you notice:

• Recurring pus or discharge near the anus
• Repeated abscesses or swellings that keep coming back
• Ongoing pain, moisture, or skin irritation around the anal area
• A fistula that has returned after previous surgery

Early, accurate mapping of a fistula gives more treatment options and a better chance of preserving both healing and continence.

Frequently Asked Questions

Will VAAFT affect my bowel control?

VAAFT is specifically designed to avoid cutting the sphincter muscle, which is why it is described as sphincter-saving. Protecting continence is one of the main reasons this approach is chosen for complex fistulas, though your surgeon will discuss your individual risks with you.

Is VAAFT suitable for every fistula?

No. It is particularly useful for complex, recurrent, or branching fistulas where seeing the tract from inside is valuable. Simple low fistulas may be well treated by other methods. The right technique is decided after the fistula is properly assessed and mapped.

Can a fistula come back after VAAFT?

Fistulas can sometimes recur, especially complex ones, and honest counselling includes this. Attending follow-up appointments and reporting any returning symptoms early improves the chance of a complete result and allows further treatment if needed.

How long is the recovery?

Many people return to their usual routine within one to two weeks, as there is no large external wound. Your surgeon will give specific guidance depending on the complexity of your fistula and how you are healing.

When to Consult a Surgeon

A fistula that keeps discharging, causing abscesses, or has returned after previous surgery deserves careful, individualised assessment, especially when protecting the sphincter matters. Dr. Satish Reddy evaluates each fistula and explains which sphincter-saving option, if any, is most appropriate. To arrange an assessment at STAR Hospitals, Financial District, Hyderabad, you can call or message the clinic on WhatsApp at +91 72070 54555 to book a convenient appointment.