Lower back defect coverage using a free-style gluteal perforator flap.

Lower back defects remain a major challenge for reconstructive surgeons. Advances in perforator flap techniques now make it possible to repair lower back defects using a gluteal perforator flap based on the free-style flap design. We used a free-style gluteal perforator flap in 10 patients with lower back defects due to skin cancer treatment (6 patients) or infection following spine surgery (4 patients). V-Y advancement flaps were used for defects <6 cm in length, and rotation flaps for defects >6 cm. Perforators were detected at the upper parasacral area, and the flap design was drawn on the skin of the upper gluteal region. Coverage was successful and donor sites were closed primarily in all cases. There were 4 complicated cases: 1 of partial flap loss that led to delay of the wound closure, 2 of initial venous congestion, and 1 of hematoma. These complications resolved, and there was no case of flap loss during a 12 to 62 months follow-up (mean, 32.4 months). The present series indicated that the free-style gluteal perforator flap provides a safe, effective, and relatively easy option for lower back defect reconstruction.