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The popliteal lymph nodes lie in the tissues behind a person’s knee. Many conditions can cause them to swell, such as infections and autoimmune conditions. It is rare for cancer to...
The popliteal lymph nodes, small in size and some six or seven in number, are embedded in the fat contained in the popliteal fossa, sometimes referred to as the 'knee pit'.
In the popliteal node, a fibrous outer capsule encloses lymphatic tissue that filters and balances the blood supply to the lower extremities. Explore the anatomy and function of the popliteal nodes with Innerbody's interactive 3D model.
The popliteal lymph nodes play a role in filtering and processing lymph containing immune cells and waste products from tissues, before returning it to the bloodstream. This helps in immune surveillance and response to infections or other abnormalities in the areas they drain.
Popliteal Nodes. The popliteal lymphatic nodes are small in size, usually between five and seven in number, and are often found imbedded in fat reserves in the popliteal fossa. They receive lymph from the lateral superficial vessels.
There are two main groups of lymph nodes located within the popliteal fossa: the superficial popliteal and the deep popliteal. The superficial popliteal lymph nodes lie within the subcutaneous tissue and receive lymph from the lymphatic vessels accompanying the short saphenous vein.
The popliteal lymph nodes are relatively small in size. They are embedded in the popliteal fat. One lies just deep to the popliteal fascia and drains the saphenous vein territory e.g. the superficial regions of the lateral leg and the sole of the foot. A second node lies near the popliteal artery.
These nodes' efferent path mostly follows the femoral vessels and drains into the deep inguinal lymph tissue. Some popliteal nodes may also be located near the great saphenous vein and travel more to the superficial inguinal lymph tissue.
Popliteal lymph nodes are embedded within the adipose tissue of the popliteal fossa. There are usually one to three superficial popliteal lymph nodes located deep to the popliteal fascia, near the termination of the small saphenous vein.
Popliteal lymph nodes drain the lower extremities and may be a sign of an infection of the heel or foot. Only scarce data are available specifically about popliteal lymphadenopathy.