Lateral Internal Sphincterotomy

Lateral Internal Sphincterotomy (LIS) is a surgical procedure primarily utilized to treat chronic anal fissures – small tears or cuts in the lining of the anal canal, causing severe pain and discomfort during bowel movements. During the procedure, the surgeon makes a small incision in the internal anal sphincter muscle, which is responsible for controlling bowel movements. This incision aims to relax the sphincter and reduce its tightness, promoting better blood flow to the fissure area, allowing it to heal. LIS is often performed under local anesthesia and is considered a minimally invasive surgery. It typically involves a short recovery period and a low risk of complications. The procedure effectively alleviates the intense pain associated with anal fissures and significantly improves the healing process. Post-surgery, patients might experience mild discomfort or temporary changes in bowel habits. However, these effects tend to subside as the healing progresses. Complications such as infection, bleeding, or incontinence are rare but possible, and patients are usually advised to follow a specific post-operative care regimen to ensure optimal recovery. LIS remains a widely accepted and successful procedure for managing chronic anal fissures, offering relief to individuals suffering from persistent anal pain and discomfort, enabling them to resume normal daily activities without the burden of excruciating symptoms.