What is Anal Fissure Surgery (LIS)?
An anal fissure is a small, deep tear in the lining of the anal canal, typically caused by passing hard stools. When a fissure becomes chronic (lasting over 6-8 weeks), the underlying internal anal sphincter muscle enters a state of chronic spasm. This spasm reduces blood flow, preventing the fissure from healing and causing excruciating, burning pain after bowel movements. Surgery breaks this pain-spasm cycle.
Who Needs Anal Fissure Surgery?
Surgery is indicated for chronic anal fissures unresponsive to dietary modification, stool softeners, and topical nitroglycerin/diltiazem ointments.
Key clinical indicators include:
- Severe, knife-like burning pain during and for hours after bowel movements.
- Bright red blood on stool or toilet paper.
- Visible mucosal tear with skin tags (sentinel pile) or exposed muscle fibers.
- Chronic symptoms lasting longer than 6 to 8 weeks.
Types of Fissure Surgery
- Lateral Internal Sphincterotomy (LIS): The gold-standard procedure where a microscopic incision is made in the internal anal sphincter muscle to release hypertonicity and restore blood flow.
- Laser Sphincterolysis / Fissurectomy: Laser ablation of fibrotic fissure edges combined with laser relaxation of the internal sphincter.
- Fissurectomy with Anoplasty: Removal of chronic fissure tissue and advancement of healthy mucosal flap (used in selected non-spastic fissures).
Benefits of Anal Fissure Surgery
- Immediate, dramatic relief from post-defecation burning pain.
-
95% cure rate for chronic non-healing tears.
- Rapid restoration of local tissue blood supply for accelerated healing.
- Minimal discomfort and quick return to regular activities.
What to Expect Before Surgery?
- Clinical Examination: Gentle visual inspection (avoiding digital rectals in painful acute phases).
- Bowel Preparation: A gentle enema administered on the morning of surgery.
- Anesthesia Pre-check: Cleared for spinal or short intravenous sedation.
Complete Procedure
The Lateral Internal Sphincterotomy (LIS) technique follows:
- Administration of spinal anesthesia or light general anesthesia with local block.
- Patient positioned comfortably in lithotomy position.
- Insertion of a gentle speculum to visualize the lateral wall of the anal canal.
- Making a tiny 2-3 mm incision on the side (lateral) of the anal canal margin.
- Precise division of the lowermost portion of the hyperactive internal sphincter muscle.
- The small incision is closed with a single dissolvable stitch or left to heal naturally.
- Gentle pressure applied to prevent bruising; no internal packing required.
What to Expect During Surgery?
The procedure takes only 15 to 20 minutes. Patients experience complete pain relief immediately upon awakening because the sphincter muscle spasm is gone.
Medical Management vs LIS Surgery
| Feature | Medical Ointments / Botox | LIS Surgery |
|---|---|---|
| Cure Rate | 50% - 60% (High recurrence) | >98% (Gold standard cure) |
| Time to Pain Relief | Weeks | Immediate (24 - 48 hours) |
| Treatment Duration | Months of daily ointments | 15-minute one-time procedure |
| Recurrence | Common | Extremely rare (<1%) |
Success Rate and Safety
LIS is one of the most successful minor surgical procedures in proctology, boasting a cure rate above 98% with extremely low complication rates when performed by expert colorectal surgeons.
Anal Fissure Surgery Cost Estimate
| Procedure Type | Estimated Cost (INR) |
|---|---|
| Open / Closed LIS Surgery | ₹40,000 - ₹65,000 |
| Laser Fissurectomy with Sphincterolysis | ₹55,000 - ₹1,20,000 |
Disclaimer: Final costs depend on day-care vs overnight stay and surgical technique chosen.
Recovery Guide & Post-Operative Care
Recovery Timeline
- Day 0: Performed as day-care; discharge within 6 to 8 hours.
- Day 1-2: Patients report dramatic reduction in bowel movement pain.
- Week 1: Fissure tear begins rapid epithelialization; return to work.
- Week 2-3: Complete closure of the anal tear.
Post-Op Precautions & Care
- High-Fiber Diet: Eat plenty of green vegetables, fruits, and daily psyllium husk (Isabgol).
- Hydration: Drink 2.5 to 3 liters of water daily.
- Warm Sitz Baths: Take 10-minute sitz baths after bowel movements for 1 week.
- Avoid Straining: Never strain at stool; take prescribed laxatives if necessary.
Frequently Asked Questions
Is sphincterotomy surgery safe? Does it cause incontinence?⌄
In experienced hands, LIS cuts only a tiny, controlled portion of the internal sphincter muscle, resulting in a >98% success rate with near-zero risk of permanent incontinence.
How soon will the pain stop after fissure surgery?⌄
Most patients experience immediate relief from the intense burning pain during their very first bowel movement after surgery, as muscle spasm is eliminated.
Is anal fissure surgery a day-care procedure?⌄
Yes, anal fissure surgery is almost always performed as a day-care procedure, allowing patients to go home the same day.
Can a fissure recur after LIS surgery?⌄
Recurrence after a properly performed LIS surgery is extremely rare (under 1-2%).
When can I resume work after fissure surgery?⌄
Most patients return to light desk work within 2 to 4 days post-surgery.