Femoral vein

Overview
In the human body, the femoral vein is a blood vessel that accompanies the femoral artery in the femoral sheath. It begins at the adductor canal (also known as Hunter's canal) and is a continuation of the popliteal vein. It ends at the inferior margin of the inguinal ligament, where it becomes the external iliac vein.

Drainage
Several large veins drain into the femoral vein:
 * popliteal vein
 * profunda femoris vein
 * great saphenous vein

Clinical significance
Occlusion of the femoral vein can be life-threatening.

The practice of delivering recreational drugs intravenously using the femoral vein is relatively common amongst injecting drug users (IDUs).

Use of the term superficial femoral vein
The term superficial femoral vein is not recognized as a legitimate anatomic term.

However, some specialist physicians (e.g. radiologists, vascular surgeons) use the term superficial femoral vein for the distal part of the femoral vein to:
 * 1) differentiate the femoral vein segments before and after the profunda femoris vein joins with it, and
 * 2) differentiate the distal segment of the femoral vein from the deep femoral vein (profunda femoris vein), which is paired with the profunda femoris artery.

Usage of this term is discouraged by many physicians because it leads to confusion among general medical practitioners.

The femoral vein is considered a deep vein, unlike the adjective superficial suggests and has led some physicians to falsely conclude it is a superficial vein, which has resulted in patients (with deep vein thrombosis) being denied efficacious thrombolytic therapy.

Additional Resources

 * The Disease Database
 * Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3
 * Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket.  Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7

Acknowledgements
The content on this page was first contributed by: C. Michael Gibson, M.S., M.D.

List of contributors:

For Patients
Veine fémorale Veia femoral