Autological platelet-rich fibrin sealant for anterior horseshoe anal fistula in female patient: A video vignette.

Introduction: Nowadays many techniques have been developed for the treatment of complex anorectal fistulas. Biological substances are used for minimally invasive treatment of anorectal fistulas, especially for complex anal fistulas. Insertion of autological fibrin substance into the fistula tract is one of the types of such procedures.