The popliteal nodes, or popliteal lymph nodes, include six or seven nodes and are located in the legs near the knees at the popliteal fossa. They service the lower legs and feet for the lymphatic system. The popliteal lymph nodes are in two sets: the deep popliteal nodes near to the popliteal vessels and the superficial popliteal lymph node associated with the small saphenous vein. The deep lymphatic trunks and lateral superficial trunks within the legs feed them. In the popliteal node, a fibrous outer capsule encloses lymphatic tissue that filters and balances the blood supply to the lower extremities.