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  • Title: Anatomical basis of the lateral superior gluteal artery perforator (LSGAP) flap and role in bilateral breast reconstruction.
    Author: Fade G, Gobel F, Pele E, Chaput B, Garrido I, Pinsolle V, Pelissier P, Sinna R.
    Journal: J Plast Reconstr Aesthet Surg; 2013 Jun; 66(6):756-62. PubMed ID: 23523167.
    Abstract:
    INTRODUCTION: Deep inferior epigastric perforator (DIEP) flap is one of the gold standards in autologous breast reconstruction. When the abdominal tissue is not available, the superior gluteal artery perforator (SGAP) is often a second option with its drawback, especially the donor-site deformity. Reports have highlighted that a higher and more lateral SGAP flap can be harvested to overcome several drawbacks of the classical SGAP, allowing in the same procedure a body-contouring procedure. In order to set the anatomical basis of this flap, we proposed to study the characteristics of a reliable and easily identifiable superior and lateral perforator of the superior gluteal artery (lateral SGAP (LSGAP)) situated in the region of the lower body-lift resection allowing to perform bilateral breast reconstruction at the same time. MATERIAL AND METHOD: The anatomical study of 50 scans (or 100 buttocks) allows us to set forth a diagnostic assumption on the localisation of the perforator with respect to osseous landmarks (coccyx, iliac crest and great trochanter) which will be verified during the dissection of 10 cadavers (or 20 buttocks) and during the 20 colour Doppler examination (or 40 buttocks). RESULTS: In our computed tomography (CT) scan study, in 96% of cases, the perforator was situated in a circle with a radius≤3 cm with a 95% confidence interval and located at the junction of the proximal third-middle third of the distance summit of the posterior iliac crest (point B), most lateral point of the greater trochanter (point C). This assumption was verified by the cadaveric dissection and in vivo studies. CONCLUSION: Our study sets the anatomical landmarks of the LSGAP flap. This option allows the raising of an SGAP flap avoiding the main drawbacks of this flap and allows harvesting a flap with the tissue that is often discarded during the body-lift procedure.
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