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Femoral canal

From Wikipedia, the free encyclopedia
Femoral canal
Femoral sheath laid open to show its three compartments. (The femoral canal is both visible and labeled [difficult to see label] medial to the femoral vein.)
Structures passing behind the inguinal ligament. The entrance to the femoral canal, the femoral ring, is labeled at right.
ArteryFemoral artery
VeinFemoral vein, external iliac vein
NerveFemoral nerve, genitofemoral nerve
Latincanalis femoralis
Anatomical terminology

The femoral canal is the medial (and smallest) compartment of the three compartments of the femoral sheath. It is conical in shape. The femoral canal contains lymphatic vessels, and adipose and loose connective tissue, as well as - sometimes - a deep inguinal lymph node. The function of the femoral canal is to accommodate the distension of the femoral vein when venous return from the leg is increased or temporarily restricted (e.g. during a Valsalva maneuver).[1]

The proximal, abdominal end of the femoral canal forms the femoral ring.[1]

The femoral canal should not be confused with the nearby adductor canal.



The femoral canal is bordered:

Video of relevant anatomy

Physiological significance


The position of the femoral canal medially to the femoral vein is of physiologic importance. The space of the canal allows for the expansion of the femoral vein when venous return from the lower limbs is increased or when increased intra-abdominal pressure (Valsalva maneuver) causes a temporary stasis in the venous flow.

Clinical significance


The entrance to the femoral canal is the femoral ring, through which bowel can sometimes enter, causing a femoral hernia. Though femoral hernias are rare, their passage through the inflexible femoral ring puts them at particular risk of strangulation, giving them surgical priority.

See also



  1. ^ a b Moore, Keith L. (2018). Clinically Oriented Anatomy. A. M. R. Agur, Arthur F., II Dalley (8th ed.). Philadelphia. pp. 711–713. ISBN 978-1-4963-4721-3. OCLC 978362025.{{cite book}}: CS1 maint: location missing publisher (link)

Public domain This article incorporates text in the public domain from page 625 of the 20th edition of Gray's Anatomy (1918)