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  • Title: Evaluation of healing and complications after lateral internal sphincterotomy for chronic anal fissure: marginal suture of incision vs. open left incision: prospective, randomized, controlled study.
    Author: Kang GS, Kim BS, Choi PS, Kang DW.
    Journal: Dis Colon Rectum; 2008 Mar; 51(3):329-33. PubMed ID: 18176828.
    Abstract:
    PURPOSE: Internal sphincterotomy remains the standard for treatment of anal fissure, but it is associated with risks of infection, bleeding, and incontinence. Recent studies have suggested that the complications after lateral internal sphincterotomy are related to surgical technique. This study was designed to assess the incidence of early and late complications after lateral internal sphincterotomy with marginal sutured incision. Fissure healing, pain, and complications were compared in patients undergoing a procedure involving three interrupted marginal sutures after open lateral internal sphincterotomy procedure. METHODS: Ninety patients of chronic anal fissure were randomly assigned to two groups. Both groups received open lateral internal sphincterotomy via standardized method. The incisions of the patients in Group 1 (n=45) were sutured marginally with three interrupted sutures using 2-0 chromic catgut, whereas the incisions of the patients in Group 2 (n=45) were left open. The patients were assessed at 12 weeks postoperatively by an independent observer. RESULTS: The fissure-healing rate was not significantly different in both groups (95 and 93.1 percent, respectively). The pain score was slightly higher in Group 2, and it was statistically significant. Four cases of bleeding and two abscesses were observed in Group 2. These complications were not observed in Group 1. One case of incontinence was observed at the beginning in Group 1 and four in Group 2, but the incontinence was transient in both cases. CONCLUSIONS: Marginal sutures of incision after lateral internal sphincterotomy may be beneficial to reduce complications related to early wound healing.
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