The surgical treatment of pilonidal sinus with the Limberg transposition flap will be demonstrated in 40 patients (22 male; 18 female). First step is draining the infect by incision, followed by radical excision of the pilonidal sinus and covering of the defect by a rhomboid transposition flap. In 39 out of 40 cases primary wound healing occurred. No recurrence has yet been encountered. In one case a seroma was observed which was drained and showed secondary wound healing. The mean hospital stay was 7.9 days and the mean time until return to work was about 15 days. We consider the Limberg transposition flap to be an effective treatment of pilonidal sinus disease due to its technical simplicity and low complication rate.