Comparative study of lateral Internal Sphincterotomy verses Topical Glyceryl Trinitrate for treatment of fissure-in-Ano

  • Ajmal Farooq
  • Zahid Niaz
Keywords: Fissure in Ano. Glyceryl Trinitrate. Prospective Study. Anal Canal. Administration, Topical. Vasodilator Agents. Digestive System Surgical Procedures. Anastomosis, Surgical. Follow-Up Studies.


This prospective randomized interventional study was carried in one of surgical unit of Lahore General Hospital Lahore from 1st January 2002 to 30, December 2002 a total number of 100 patients with both acute and chronic anal fissure were taken and randomly divided in two groups. Group A was treated with 0.2% GTN for 6 weeks and Group B was treated with lateral internal closed Sphincterotomy a follow up after 0, 2nd, 61h weeks and even after 6 months carried out. Peak incidence of disease was observed between 30 and 40 years of age with 56 males and 44 females. 24% patients were with acute fissure and 76% with chronic fissure. In this study with 0.2% GTN overall healing rate of 66.66% for acute fissure and 63.15% for chronic anal fissure was observed. GTN was found less effective in healing the fissure but some what good for initial symptomatic improvement in its comparison 100% healing was observed with lateral internal sphincterotomy with only 10% transient incontinence for flatus. So it was concluded that lateral internal sphincterotomy is superior to GTN and is the procedure of choice for fissure in ano.