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A prospective randomised study comparing two treatment modalities for chronic pilonidal sinus with a 5-year follow-up.

Author(s): Rao MM, Zawislak W, Kennedy R, Gilliland R

Affiliation(s): John Goligher Colorectal Unit, Leeds General Infirmary, Leeds, UK.

Publication date & source: 2010-03, Int J Colorectal Dis., 25(3):395-400. Epub 2009 Oct 13.

Publication type: Comparative Study; Randomized Controlled Trial

BACKGROUND: The optimal treatment of chronic pilonidal sinus is a matter of debate. Although excision and suture offers faster healing, it is associated with an increased incidence of wound infection. This study compared excision and primary closure of pilonidal sinus using incorporated gentamicin impregnated collagen with conventional laying open. METHODS: Consecutive patients with pilonidal sinus were randomly assigned to one of two treatment groups: (1) open method-wound left open post-excision and (2) closed method-wound closed in two layers over gentamicin impregnated collagen. The main outcome measures were operating time, hospital stay, linear analogue pain scores (days 1, 2, 4, 7 and 14), healing rates, analgesic use and cost. Rate of recurrence at 5 years was further assessed by means of a telephone survey. RESULTS: Sixty patients were recruited from June 1999 to December 2000. Operating time was significantly longer in the closed method. Pain scores were significantly lower for the closed group. A significantly higher proportion of closed wounds healed at 4 weeks. The overall cost per patient was significantly lower for the closed group. Recurrence rate was similar at 5 years. CONCLUSION: Excision and primary closure over a gentamicin impregnated collagen is a cost-effective method of treating pilonidal sinuses, as it ensures faster healing, causes less pain and its long-term recurrence rates are similar to other techniques.

Page last updated: 2010-10-05

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