08.18 Bilateral Gluteal Fasciocutaneous Advancement Flaps for Treatment of Pilonidal Disease

J. W. Soliman1, R. Zhu1, I. V. Stettler1, W. Shen1, C. Sutanto1, M. Barnajian1, A. Artinyan1, J. Cohen1, Y. Y. Nasseri1  1Cedars-Sinai Medical Center,Los Angeles, CA, USA

Introduction:  Patients with complex and recurrent pilonidal disease undergo various flap-based procedures to reconstruct the post-excision wound defect. In most cases, recurrence and/or dehiscence occur in up to 50% and cosmetic results are subpar. We present an outpatient, durable and cosmetic approach to reconstruction via bilateral gluteal fasciocutaneous flaps with and without compressing tie-over sutures.

Methods: This is a retrospective review of a prospective database. Following elliptical excision of pilonidal disease, gluteal fasciocutaneous advancement flaps are elevated using blunt discontinuous dissection in a 360-degree fashion to allow a tension-free repair. A multilayered closure is then performed using interrupted sutures, starting at the fascial level with careful attention to evert skin edges. For the 21 most recent patients, two full thickness-compressing sutures tied over rolled up gauze were placed at the lower end of the incision. The resulting scar is mid-line. All procedures were outpatient.

Results: Thirty-seven patients, 6 females, with a mean BMI of 26.8 and mean age of 28.9 were studied. Five patients were active smokers and 7 were obese. At a median follow-up of 22 months (range 2-64), there were no recurrences. Twelve (32%) patients had wound dehiscence: 8/16 (50%) of patients without compressing tie-over sutures, and 4/21 (19%) of patients with compressing tie-over sutures. Three of 5 (60%) smokers and 3/7 (43%) obese patients had wound dehiscence. All dehiscence resolved with office hair shaving and wound care.

Conclusion: Bilateral gluteal fasciocutaneous advancement flap closure with compressing tie over suture is a cosmetic outpatient treatment for recurrent and complex pilonidal disease with no recurrence and low dehiscence rate.