Pilonidal Sinus Surgery in Pune: Flap and Off-Midline Repair

What is a pilonidal sinus?

A pilonidal sinus is a small channel or pit in the skin of the natal cleft, the groove at the upper end of the buttocks. Loose hairs are drawn into the skin by friction and movement, and the body reacts to them as foreign material, forming tracts that can fill with hair and debris and become infected.

It is most common in young adults, particularly men, and in people who sit for long periods, have thick or coarse body hair, or carry extra weight.

Symptoms include:

• one or more small pits in the midline of the cleft;
• pain and swelling, especially when sitting;
• discharge of pus or blood, sometimes with an unpleasant smell;
• a tender, red swelling (an abscess) during a flare-up.

When should you seek urgent help?

A rapidly enlarging, very painful red swelling, especially with fever, is likely an abscess and needs same-day medical care. Drainage relieves the pain quickly; planned surgery follows once the infection has settled.

Who may benefit, and how is it assessed?

Surgery is advised for a sinus that keeps discharging or becoming infected. The surgeon examines the cleft to count the pits, find any openings to the side, and judge how deep and widespread the tracts are. Previous operations, recurrences and your work and sitting needs all shape the plan.

What are the treatment options?

Option	Suits	Points to consider
Hair removal and hygiene	Mild disease; also after any surgery	Ongoing; reduces flare-ups
Drainage of abscess	Acute infection	Relieves symptoms; most people need later treatment
Minor pit procedures (pit picking, sinus-guided techniques)	Small, limited disease	Quick recovery; recurrence higher in extensive disease
Excision with open healing	Extensive or repeatedly infected disease	Low recurrence, but daily dressings for weeks to months
Excision with midline closure	Now generally avoided	Higher rates of wound breakdown and recurrence
Excision with off-midline flap closure (Karydakis, cleft lift, Limberg)	Chronic and recurrent disease	Faster healing; flattens the cleft; scar placed to the side

A Cochrane review found a clear benefit for off-midline rather than midline closure. The American Society of Colon and Rectal Surgeons’ guideline covers the full range of options, from abscess drainage to flap repair. Long-standing open wounds are covered under chronic wound treatment.

How is flap surgery performed?

1. Anaesthesia: spinal or general anaesthesia, with you lying face down.
2. Identification: the pits and tracts are mapped, sometimes with a dye.
3. Excision: all the diseased tissue is removed.
4. Flap closure: nearby skin and fat are moved to fill the gap and flatten the cleft, so the final scar lies away from the midline.
5. Closure: layered stitches, sometimes with a drain.

How should you prepare, and what should you ask?

• Treat any active infection first.
• Remove hair from the area as advised before surgery.
• Plan one to two weeks away from long periods of sitting.
• Arrange loose clothing and a cushion for the journey home.

Questions to ask:

• Is my disease suitable for a minor procedure, or do I need a flap?
• Where will the scar be?
• How long should I avoid sitting, driving and sport?
• What can I do to stop it coming back?

What is recovery like?

Time	What to expect for most patients
Days 1-3	Soreness; lie on your side or front; drain removed if used
Weeks 1-2	Short walks; limited sitting; many return to desk work towards the end
Weeks 2-3	Stitches removed; wound check
Weeks 4-6	Return to sport and full activity once healed
Long term	Keep the area clean and hair-free

What are the risks?

• Wound infection or breakdown, which may need dressings until it heals.
• Fluid collection (seroma) under the flap.
• Recurrence, lower with off-midline techniques but still possible.
• Numbness around the scar.
• Scar visibility or discomfort.

Contact the surgeon for increasing pain, redness, discharge, fever or a wound that opens.

What results can you expect?

Most people heal within a few weeks after flap surgery and return to normal life without the repeated flare-ups. Keeping the cleft clean and hair-free afterwards reduces the chance of new disease.

What happens if a pilonidal sinus is not treated?

A pilonidal sinus that causes no symptoms and shows no signs of infection does not need treatment, only good hygiene and watchfulness. Once it starts to flare, however, it rarely settles for good on its own. Hair and debris stay trapped in the tracts, so infections tend to return, sometimes as a painful abscess. With each episode the tracts can branch and spread sideways, so the eventual operation may need to remove more tissue.

Non-surgical measures are reasonable for mild disease: keeping the cleft clean and dry, avoiding long periods of sitting, and hair removal as advised by your doctor. Antibiotics can help when infection spreads into the surrounding skin. A sinus that keeps discharging or becoming infected usually needs surgery.

Common myths about pilonidal sinus

• “A pilonidal sinus is a type of piles or anal fistula.” It is a separate condition in the skin of the buttock cleft and is not connected to the back passage.
• “It only happens to people who do not wash properly.” Hair being pushed into the skin by friction and sitting is the main cause, so it occurs in very clean people too.
• “A course of antibiotics will cure it.” Antibiotics can calm an infection, but they cannot remove the hair and tracts, so the sinus usually flares again.
• “After surgery it can never come back.” Recurrence is possible after any technique, which is why hygiene and hair care continue afterwards.

What affects the cost of pilonidal sinus surgery in Pune?

• Extent of disease and whether it is a first or repeat operation.
• Technique: minor procedure, open healing or flap closure.
• Anaesthesia and hospital stay.
• Dressings, hair removal and follow-up visits.

Pilonidal sinus surgery is a medical treatment, so it may be covered by health insurance, subject to your policy.