Distal tendon of sartorius muscle

The tendon of the sartorius muscle is part of the pes anserinus, located on the medial side of the knee. The sartorius muscle originates from the anterior superior iliac spine and runs obliquely across the anterior compartment of the thigh. It then descends towards the medial aspect of the knee, where its tendon inserts onto the medial surface of the proximal tibia, specifically as part of the pes anserinus, along with the tendons of the gracilis and semitendinosus muscles.[1-2]

The pes anserinus is a layered supportive structure that plays a significant role in stabilizing the medial side of the knee joint. The tendons of the sartorius, gracilis, and semitendinosus muscles converge and insert together at this site, contributing to the complex tensor fasciae cruris muscle.[1]