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Arteries of the leg and foot

Recommended video: Neurovasculature of leg and knee [15:48]
Arteries, veins and nerves of the leg and knee.

The lower limb is essential for our locomotion and movement. The ball and socket hip joint provides movements on all three perpendicular axes including flexion and extension, medial and lateral rotation, abduction and adduction. However, as you are well aware, all of those movements are impossible to take place without a neurovasculature supply to the respective muscles and structures responsible for them.

The vascular supply of the leg and foot is the focus of this article, both in terms of the basic anatomy, and its clinical relevance. The origin, course and clinical points of major vessels will also be discussed below.

Key facts about the vasculature of the leg and foot
Origin Femoral artery
Popliteal artery Deepest neurovasculature structure in the popliteal fossa
Anterior tibial artery A branch of the popliteal artery; supplies the anterior compartment of the leg.
A Physician Can Make Cough Mixture
(stands for: Anterior tibial recurrent, Posterior tibial recurrent, Circumflex fibular, Muscular, Cutaneous, Malleolar)
Dorsalis pedis artery It is the continuation of the anterior tibial artery and gives off four branches that can be easily remembered with a mnemonic.
: First dorsal metatarsal, Arcuate, Deep plantar, Tarsal
Posterior tibial artery A branch of the popliteal artery; supplies the posterior compartment of the leg.
It gives off two branches; medial and lateral plantar arteries.
Fibular artery A branch of the popliteal artery; supplies the lateral compartment of the leg.
  1. Review of major arteries of the thigh
  2. Major arteries
    1. Popliteal artery
    2. Anterior tibial artery
    3. Posterior tibial artery
    4. Fibular artery
  3. Clinical aspects
    1. Peripheral vascular disease and the diabetic foot
    2. Vascular surgery
  4. Sources
+ Show all

Review of major arteries of the thigh

Once the abdominal aorta has descended through the diaphragm at vertebral level T12, the vessel gives branches to the viscera of the abdomen, namely the intestines and other organs.

At vertebral level L4, the aorta bifurcates, into the two common iliac arteries. These then pass obliquely laterally, and give off a branch to supply the pelvic viscera (the internal iliac artery). The other branch external iliac passes under the inguinal ligament, and becomes the femoral artery. The arterial supply to the lower limb originates from the femoral artery.

Femoral artery (anterior view)

The femoral artery then gives off its profunda femoris branch, which supplies the thigh (both the flexor, adductor and extensor compartments). The remaining vessel is named the superficial femoral artery. This now descends down the posterior thigh, and passes through the adductor hiatus i.e. Hunter’s canal/Subsartorial canal.

Anatomically the adductor hiatus is a space between the two insertion points of the adductor magnus muscle. As it emerges from Hunter’s canal it is known as the popliteal artery.

This quiz tests you on the femoral artery and its branches.

Major arteries

Popliteal artery

The artery is the deepest of the neurovascular structures within the popliteal fossa, with the vein just superficial and the sciatic nerve most superficial of the three structures. The vein and artery are closely adhered and can be difficult to separate on dissection.

This popliteal artery gives the following branches:

Anterior tibial artery

The popliteal artery divides and gives off an anterior tibial branch that supplies the anterior compartment of the leg i.e. tibialis anterior, the extensor hallucis longus and extensor digitorum longus muscles. This artery passes through the oval aperture of interosseous membrane and travels on the anterior surface of interosseous membrane

There is a useful mnemonic for remembering the branches of the anterior tibial artery;

A Physician Can Make Cough Mixture

  • Anterior tibial recurrent
  • Posterior tibial recurrent
  • Circumflex fibular
  • Muscular
  • Cutaneous
  • Malleolar

When this artery is found in the ankle/foot region, it is referred to as the dorsalis pedis. The artery lies lateral to the tendon of extensor hallucis longus. The dorsalis pedis gives rise to the deep plantar artery and the first dorsal metatarsal artery

In order to remember the branches of the dorsalis pedis artery, you can use the mnemonic FADT that stands for:

  • First dorsal metatarsal
  • Arcuate
  • Deep plantar
  • Tarsal

The deep plantar artery passes between the heads of the first dorsal interosseus muscle and unites with the lateral plantar artery. The first dorsal metatarsal divides into two arteries in the first web space and passes deep to the tendon of extensor hallucis longus.

The dorsalis pedis artery is an important vessel for assessing peripheral blood flow particularly in diabetics and those with existing vascular disease. The dorsalis pedis descends to supply the tarsals as well as the dorsal part of the metatarsals. Next it dives deeper into the foot and anastomoses with the lateral plantar artery to form the deep plantar arch.

Posterior tibial artery

The other division of the popliteal artery is the posterior tibial artery. This courses in the posterior compartment of the leg and supplies the posterior muscles and structures, such as the achilles tendon, gastrocnemius muscles, the deep posterior muscles i.e. flexor halluces longus, flexor digitorum longus and tibialis posterior muscle.

When the posterior tibial descends it eventually passes behind the medial malleolus along with a number of other structures. A mnemonic for remembering these structures is: 'Tom Dick And a Very Nervous Harry', from closest to the medial malleolus to furthest away. The structures these words denote are the:

  • Tibialis posterior tendon
  • flexor Digitorum longus tendon
  • posterior tibial Artery
  • posterior tibial Vein
  • tibial Nerve
  • flexor Hallucis longus tendon

These structures wind behind the medial malleolus and pass anteriorly to enter the foot via the tarsal tunnel. The posterior tibial artery divides to form the medial and lateral plantar arteries that broadly supply the sole of the foot. The medial and lateral plantar arteries supply the toes via the deep plantar arch. The medial plantar supplies part of the hallux (big toe), the lateral plantar supplies the vast majority of the foot.

Fibular artery

This vessel is a branch of the posterior tibial artery. And is the artery of the lateral or fibular compartment of the leg. Although it supplies the lateral compartment, it actually runs in the posterior compartment, and from there, sends perforating branches into the lateral compartment to supply the fibularis muscles (longus and brevis).

It has three main branches that supply the lateral part of the calcaneus, the anterior part of the lateral malleolus and also a perforating branch which communicates with the anterior tibial artery.

Fibular artery (posterior view)

The plantar arch is formed by the medial and lateral plantar arteries. The arch extends from the 1st to the 5th metatarsal and also unites with the deep plantar branch of the dorsalis pedis.

Isn't the neurovasculature interesting? Review all the major arteries, veins and nerves of the body and increase your knowledge about the arteries of the leg and foot with our study units:

Arteries of the leg and foot: want to learn more about it?

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