Naveed Ahmad, Muzaffar Aziz, Muhammad Shahid, Muhammad Ramzan, Muzammil Aziz.
Chronic anal fissure; open vs closed lateral internal sphincterotomy.
Professional Med J Jan ;12(1):44-6.

Objectives: To compare the results of open and closed lateral internal sphincterotomy in the treatment of chronic anal fissure. Setting: Department of Surgery, Nishtar Hospital Multan Period: From April 2002 to September 2002. Material and Methods: The study subject included 50 patients. Twenty five patients underwent closed lateral internal sphincterotomy (CLIS) and remaining were treated by open lateral internal sphincterotomy (OLIS). Follow-up for complications was done for the period of 4 months after the procedure. Results: The best results were obtained with closed lateral internal sphincterotomy in which incontinence rate was 24% and recurrence rate 12%. Conclusion: Closed lateral internal sphincterotomy is treatment of choice for chronic anal fissure with acceptable complication rate.

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