The pes anserinus refers to the webbed foot appearance of the conjoined tendons of the sartorius, gracilis and semitendinosus at their insertion onto the proximal medial tibia. The pes anserinus bursa is located deep to the pes anserinus tendons and superficial to the semimembranosus tendon and distal aspect of the medial collateral ligament at the posteromedial aspect of the knee.