IRCT20210712051862N1 IRCT 2022-04-29 Mashhad University of Medical Sciences Evaluation of the results of pilonidal sinus surgery with Kardidakis flap method in comparison with open method in Imam Reza Hospital in 2022-2023 Evaluation of the results of pilonidal sinus surgery with Kardidakis flap method in comparison with open method 2022-03-21 anticipated 60 Complete https://irct.ir/trial/62409 interventional Randomization: Not randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment. N/A Pilonidal Sinus Disease. Intervention 1: Intervention group: In this group, which is a closed surgery, after sterilizing the field with betadine, the pilonidal sinus site is marked with a marker, then to reduce bleeding into it, a solution of epinephrine diluted with -100 cc Sterile serum is injected. The operation site is removed with a razor blade and removed. After controlling the bleeding, a drain is placed in the wound floor to drain the wound, then the subcutaneous tissue and skin are repaired in three layers. Intervention 2: Control group: In this group, open surgery is performed in such a way that after sterilizing the surgical site with betadine, the sinus location is determined with the help of a marker and injection of die into it. Then, from the control of bleeding and washing the place with sterile serum, the place is bandaged with wet gas and left open. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is The study has not started yet