[TA] a triangular space at the upper part of the thigh, bounded by the sartorius and adductor longus muscles and the inguinal ligament, with a floor formed laterally by the iliopsoas muscle and medially by the pectineus muscle; the branches of the femoral nerve are distributed within the femoral triangle; it is bisected by the femoral vessels, which enter the adductor canal at the triangles apex. SYN: trigonum femorale [TA], trigonum femoris*, fossa scarpae major, Scarpa triangle, subinguinal triangle.