The femoral ring is the superior opening of the femoral canal. It boundaries are:
- medial: lacunar ligament
- anterior: medial part of the inguinal ligament
- lateral: femoral vein within the intermediate compartment of the femoral sheath
- posterior: pectineal ligament overlying the pectineus and its fascia covering the superior pubic ramus
Femoral hernias occur through the femoral ring into the femoral canal. As 3 of the 4 boundaries of the femoral ring are either ligamentous or osseous, the ring is unforgiving which explains the high risk incarceration of femoral hernias.