Pes anserinus (" goose foot") refers to the conjoined tendons of three muscles of the thigh. It inserts onto the anteromedial (front and inside) surface of the proximal tibia. The muscles are the sartorius, gracilis and semitendinosus sometimes referred to as the guy ropes.

Pes anserinus 1/2 Synonyms: Pes anserinus superficialis The pes anserinus is the broad conjoined tendon of insertion of the sartorius, gracilis and semitendinosus muscles on medial surface of the proximal tibia. The term pes anserinus is Latin for "goose's foot" and was named based on its similar appearance to the webbed three-toed feet of geese.

Pes anserinus (rare plural: pedes anserini) is the anatomic name given to the conjoined tendons at the medial aspect of the knee that inserts onto the anteromedial aspect of the tibia.

The pes anserinus is where the tendons of the sartorius, gracilis, and semitendinosus join at the medial knee, into the anteromedial proximal tibia. Pes anserine bursitis may result from stress, overuse, obesity and trauma to this area.