Case Study on Transposition Flaps on the Sacral Pilonidal Sinus

Abstract

　Pilonidal sinus is caused by the insertion of body hair and it is common in the sacrum. There are many reports on the surgical techniques for pilonidal sinus. We selected a transposition flap for flattening of the cleft and employed this method in 18 cases over a period of 6 years. We investigated their epidemiological features and postoperative course. As a result, we found that many patients were male, young and obese, but there was no common occupation as in past reports. The recurrence rate was 9.1%, which was sufficiently low; therefore, this method was considered to be useful. On the other hand, there was a high rate of postoperative breakdown and methods to decrease this rate are needed in the future.