The pes anserinus is the conjoined insertion of the sartorius, gracilis, and semitendinosus tendons on the anteromedial tibia, arranged in a goose-foot pattern (from which it derives its name). A bursa lies between the pes and the MCL.
| Muscle |
|
|---|---|
| Attachment | Anteromedial surface of the proximal tibia, below the medial tibial condyle and medial to the tibial tuberosity |
Flexes the knee, rotates the tibia medially and adds dynamic support to the medial side of the knee against valgus and external rotation forces
Pes anserinus bursitis produces anteromedial knee pain below the joint line in overweight, osteoarthritic, or diabetic patients. It is commonly confused with medial compartment arthritis. The semitendinosus and gracilis tendons are harvested through a pes anserinus incision for hamstring ACL reconstruction.
Bursa inflammation between the pes tendons and the MCL producing anteromedial knee pain below the joint line in obese or diabetic patients with osteoarthritis, treated by aspiration and corticosteroid injection.
Semitendinosus and gracilis tendons harvested through the pes anserinus insertion using a tendon stripper for quadrupled hamstring ACL reconstruction graft.
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