2.1. Study design
This study is a single-center retrospective cohort study to compare a novel minimally invasive surgical approach with EPC procedure in patients with pilonidal sinus disease (PSD). The study was conducted in accordance with the Declaration of Helsinki and in line with the Strengthening the Reporting of Cohort Studies in Surgery (STROCSS) criteria [26]. After the ethical approval was obtained from Bezmialem Foundation University Clinical Research Ethics Committee, the study was performed between 01.10.2018 and 31.12.2018.
There were two cohort groups in which the patients with PSD underwent two different surgeries. One of the surgical procedures is SPC as a minimally invasive surgical procedure, and the other one is EPC.