Introduction: Pilonidal sinuses typically occur in the sacrococcygeal skin of young
adults and its treatment is surgery. The most common methods are excision with
or without primary closure procedures. Considering that the recent researches
have shown different results, we have compared the recurrence rate of pilonidal
sinus using the 2 methods. Materials and Methods: The study was studied on 250 patients, who had gone under pilonidal sinus
surgery for the first time at least 5 months ago. Recurrence rate and signs of
recovery were studied. Patients with experience a painful period until 5 months
after the surgery were excluded. Finally, 123 patients with open surgery and
127 with closed surgery were included. Results: Recurrence rate was 9.8% (12 cases) in open surgery and 11% (14 cases) in
closed surgery. Probability of non- recurrence after 1,2 and 5 years were 99%,
95% and 91% after open surgery and 97%, 94% and 87% after closed surgery
respectively. Type of surgery has no affect on pilonidal sinuses recurrence. Conclusion: Findings showed that there was not significant difference in the
recurrence rate of pilonidal sinus after excision between with and without
primary closure procedures. Regarding to less complication, excision and
primary closure, as a preferred procedure in the management of pilonidal sinus
disease, is recommended.