Partial Gluteus Muscle Flap for Treatment of Chronic, Recalcitrant Pilonidal Cyst Disease

Background: Pilonidal cyst disease is a challenging condition requiring excision and wound management when it is chronic and symptomatic. Primary closure of the excision site can lead to high recurrence rates, necessitating flap-based reconstruction. This article discusses the use of a partial gluteus maximus muscle flap to address recurrent pilonidal disease and reduce its recurrence. Methods: From 2014 to 2021, 11 patients aged 14–31 with recurrent pilonidal cysts underwent two-stage surgery involving excision and wound debridement by general surgery, followed by plastic surgery for wound closure using the partial gluteus muscle flap. Results: Eleven patients were included in the study (four women and seven men). The mean age was 23±5.2, and the average body mass index was 28.59 (±6.7). The mean number of previous procedures was 2.25 (range, 2–3). Operative time was 158.7 ± 37 minutes. The average length of stay when both procedures were done in the same admission was 8±6 days (range 3–21 days) and when procedures were done separately, the length of hospital stay after the wound closure using a partial gluteus muscle flap was 3 days, and the range for reliable follow-up was 1.6–7 years postoperatively. In our study cohort of 11 patients, the majority, specifically seven individuals, experienced uneventful healing. However, a subset of patients encountered complications. Three patients developed an infection recurrence: one was treated conservatively, and one required reoperation with resolution of symptoms, and one patient also experienced wound dehiscence, which was closed with a small procedure. Conclusion: Partial gluteal muscle flap offers a promising approach for treating recalcitrant, difficult-to-treat pilonidal disease in young adults, enhancing wound healing and reducing the risk of recurrence.