Femoral canal 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. 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. Femoral canal In human anatomy of the leg, the femoral sheath has three compartments.
Femoral artery Femoral artery The femoral artery is a large artery in the thigh and the main arterial supply to the leg. It enters the thigh from behind the inguinal ligament as the common femoral artery, a continuation of the external iliac artery. Injuries to the femoral artery can require reattachment surgery. Here, it lies midway between the anterior superior iliac spine and the symphysis pubis. The common femoral artery gives off the profunda femoris artery and becomes the superficial femoral artery to descend along the anteromedial part of the thigh in the femoral triangle. It enters and passes through the adductor