LAUSR

Despite being the first free flap used in reconstructive surgery in 1973 1, the groin flap slowly fell out of fashion because of its short pedicle length, small vessel diameter, variable vascular anatomy, and bulkiness. In 2004, Dr. Koshima revived the groin flap by applying the concept of perforators and proposed the superior iliac artery perforator (SCIP) flap, which he used successfully to reconstruct limb defects 2. As a workhorse flap, the SCIP flap can be used to reconstruct various body regions 3-15. However, it is still challenging to harvest super-thin SCIP flaps with long pedicles. Over the years, we have found perforators consistently exist inferolateral to the deep branch of SCIA forming an F configuration with the main branch. The F configuration of the perforators have reliable anatomy and extend directly into the dermal plexus. In this article, we present the anatomy of these perforators of SCIA with F configurations and describe the flap design based on them.