Comparative Study
Journal Article
Randomized Controlled Trial
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A comparison between the results of fissurectomy and lateral internal sphincterotomy in the surgical management of chronic anal fissure.

BACKGROUND: We compare lateral internal sphincterotomy as an effective treatment of chronic fissure in ano to fissurectomy, which is as an alternative surgical treatment.

METHODS: Sixty two consecutive patients were divided into two groups through sequential sampling. Thirty patients underwent fissurectomy and 32 underwent lateral internal sphincterotomy. After a median follow-up of 22 months, we compared the results of the two procedures. In addition to frequent visits on a predetermined basis, a telephone inquiry into fissure recurrence and continence status was made.

RESULTS: All patients in both groups were pain-free and without bleeding within 1 week. In both groups, urinary retention was noted in one patient. Incontinence to flatus was noted in the fissurectomy (F) group in two (6.2%) patients, but no incontinence was noted in the lateral internal sphincterotomy (LIS) group. There was one patient (3.1%) with fissure recurrence in the F group but none in the LIS group. No patient in either group was afflicted with anal stenosis or perianal infections. All wounds healed within 8 weeks. Twenty nine patients (96.6%) in the LIS group and 28 (87.5%) in the F group reported satisfactory results with their procedure.

CONCLUSION: In the surgical treatment of chronic anal fissure not responding to conservative management, LIS may be the better treatment and, perhaps, the preferable surgical technique with fewer total complications (P < 0.005).

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