Sartorius muscle
[2] It is a long, thin, superficial muscle that runs down the length of the thigh in the anterior compartment.[3] Like the other muscles in the anterior compartment of the thigh, the sartorius is innervated by the femoral nerve.[3][4] It may originate from the outer end of the inguinal ligament, the notch of the ilium, the ilio-pectineal line or the pubis.One is that it refers to the location of the inferior portion of the muscle being the "inseam" or area of the inner thigh that tailors commonly measure when fitting trousers.This article incorporates text in the public domain from page 470 of the 20th edition of Gray's Anatomy (1918)