Fig. 1

Schematic diagram of couple-kissing flap for the treatment of SPU. The flap was harvested, elevated, and rotated (or advanced) into the midline of the resultant sacral defect following debridement, and sutured primarily. The orange area and the purple area indicate one of the flaps, respectively. The blue line indicate the kissing site (interface of the two flaps). SPU: sacral pressure ulcer