Prospective and multicentre study of radiofrequency treatment in anal fistula.

Background: The most effective treatment for anal fistula is fistulotomy, but it involves a risk of anal incontinence. To reduce this morbidity, sphincter-sparing treatments have been developed, but their success in real life is often less than 50%. The aim is to determine the clinical healing rate 6 months after radiofrequency treatment.