The changes in resting anal pressure after performing full-thickness rectal advancement flaps.

Background: Advancement flap is an accepted approach for treating complex fistula-in-ano. The purpose was to evaluate the changes in resting pressure along the anal canal after performing a full-thickness flap. Methods: Manometric review of patients who have undergone a full-thickness rectal advancement flap procedure for complex anal fistulas of cryptoglandular origin. Recurrence and continence were evaluated. Resting Anal Pressure was assessed along the anal canal by two measures: maximum resting pressure(MRP) and inferior resting pressure(IRP) at 0.5 cm from the anal verge. Results: 119 patients were evaluated. Overall recurrence rate was5.9%. Anal continence was maintained intact in 76.…