The sartorius muscle is a thin, long, superficial muscle in the anterior compartment of the thigh. It runs down the length of the thigh, runs over 2 joints—hip and knee joints and is the longest muscle in the human body. muscle has a twisted position in the body. Sartorius passes behind the medial condyle of the femur to end in a tendon. The tendon sartorius, after taking an anterior curve joins with the tendon of the Gracilis and Semitendinosus in the pes anserinus before its final insertion. Origin of Sartorius : Satorius originates anterior superior iliac spine. Insertion: Satorius is inserted on the medial aspect of the proximal tibia. Actions of Sartorius: Sartorius flexes, abducts & laterally rotates the thigh. Sartorius also flexes knee (weak flexor). Nerve Supply: it is supplied by Femoral nerve. Arterial Supply: The sartorius muscle receives blood supply from superficial circumflex iliac, lateral femoral, deep femoral, descending gen...