Lateral Internal Sphincterotomy – A Trusted Surgery for Chronic Anal Fissures

Lateral Internal Sphincterotomy Introduction

Lateral Internal Sphincterotomy (LIS) is a surgical treatment used to relieve chronic anal fissures. It involves making a small cut in the internal anal sphincter muscle to reduce pressure and promote healing. This procedure is commonly performed when medical treatments fail to resolve symptoms.

Procedure Insights – A Precise Approach to Healing

During LIS surgery, the patient is positioned to allow clear access to the anal area, typically under local or general anesthesia. The surgeon makes a small incision on the lateral side of the internal anal sphincter muscle and carefully divides a portion of it. This reduces spasms, improves blood flow, and allows the fissure to heal over time. The procedure is often done as a day-care surgery and lasts about 15–30 minutes. Tools like retractors, fine scissors, electrosurgical pencils, and anoscopes may be used. LIS offers a high success rate and long-term relief with minimal complications when performed correctly.

When LIS is Recommended

• For patients with chronic anal fissures not responding to conservative treatments
• To relieve severe anal pain, especially during and after bowel movements
• To prevent recurrence of fissures that frequently reappear after medical management
• To avoid complications like sentinel piles or perianal abscesses

Essential Tools for LIS Surgery

• Anoscope
• Proctoscope
• Endoscopic Light Source
• Endoscopic Camera System
• Suction Irrigation Set
• Electrosurgical Unit (ESU)
• Monopolar Electrode
• Bipolar Electrode
• Endoscopic Grasper
• Disposable Anoscope with LED

Top 5 Countries of Lateral Internal Sphincterotomy

• United States
• Germany
• United Kingdom
• India
• Australia

Comparison with Alternative Treatments

Lateral Internal Sphincterotomy (LIS) offers better long-term relief than non-surgical treatments for chronic anal fissures. While options like topical creams or botulinum toxin injections may help early cases, they often have higher recurrence rates. LIS is more effective in promoting lasting healing. Compared to anal dilation, LIS carries a lower risk of complications and more controlled results. It remains the preferred choice when conservative treatments fail.

Lateral Internal Sphincterotomy Benefits

• Rapid pain relief and fissure healing
• Low recurrence rate compared to non-surgical methods
• Minimal surgical site complications
• Performed as a daycare or short-stay procedure
• Improves quality of life by resolving chronic discomfort

Advin Health Care is a leading manufacturer of Lateral Internal Sphincterotomy-related surgical and endoscopy products, supplying high-quality solutions globally.

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