[The surgical treatment of anal fissure]. / Die chirurgische Behandlung der Analfissur.

60 patients with relapsing acute or chronic anal fissure underwent lateral internal sphincterotomy between July 1987 and July 1994. 53 of them have been followed up. The results of this treatment are excellent and are in accordance to those of other series. This technique is proposed as a method of choice in the treatment of anal fissure.