Outcome analysis of tunica vaginalis flap for the correction of recurrent urethrocutaneous fistula in children.

Purpose: Urethrocutaneous fistula is the most common (2% to 10%) complication of hypospadias surgery. The correction of such fistula is associated with a 10% to 40% failure rate. The key measure to ensure a successful repair is separation of the suture lines in the urethra and skin, using well vascularized elastic tissue.