{Reference Type}: Case Reports {Title}: Pre-expanded Bipedicled Supratrochlear Perforator Flap for Simultaneous Reconstruction of the Nasal and Upper Lip Defects. {Author}: Feng S;Zhang Z;Xi W;Lazzeri D;Fang Y;Zhang YX; {Journal}: Clin Plast Surg {Volume}: 44 {Issue}: 1 {Year}: Jan 2017 {Factor}: 2.53 {DOI}: 10.1016/j.cps.2016.09.006 {Abstract}: The double "S" principle should be followed for facial reconstruction: the "similarity" of the donor site to the defect area and the reconstruction should be based on the different "subunits" of the face. In this article the pre-expanded, bipedicled supratrochlear perforator flap method is described, which is used for the resurfacing of both nasal and upper lip defects. This method can provide 2 independent flaps with sufficient tissue from 1 single donor site, resurfacing the nasal and upper lip units separately and providing an unparalleled color and texture match and ideal reconstructive result.