saphenofemoral junction

The sapheno-femoral junction (SFJ) is located at the saphenous opening within the groin and formed by the meeting of the great saphenous vein (GSV), common femoral vein and the superficial inguinal veins (confluens venosus subinguinalis).{{cite book|last1=Sandoval|last2=Allemang|last3=Kashyap|editor=Conor P. Delaney |date=2014 |title=Netter's Surgical Anatomy and Approaches|chapter-url=https://books.google.com/books?id=jZ95AAAAQBAJ&pg=PA436|publisher=Elsevier Saunders|isbn=978-1-4377-0833-2|page=436|chapter=Saphenofemoral Exposure |location=Philadelphia}}{{cite book|author1=Collares, Felipe P.|author2=Salomao Faintuch|title=Varicose Veins: Practical Guides in Interventional Radiology|url=https://books.google.com/books?id=6P8nDwAAQBAJ&pg=PP39|year=2017|publisher=Thieme|isbn=978-1-62623-013-2|page=39}} It is one of the distinctive points where a superficial vein meets a deep vein and at which incompetent valves may occur.{{cite book|author1=Drake, Richard|author2=A. Wayne Vogl|author3=Adam W. M. Mitchell|title=Gray's Anatomy for Students|url=https://books.google.com/books?id=Lh20BQAAQBAJ&pg=PA672|edition=3rd|year=2015|publisher=Churchill Livingstone Elsevier |location=Philadelphia|isbn=978-0-7020-5131-9|page=672}}