Lateral plantar artery

Lateral Plantar Artery

Illustration of the lateral plantar artery and its branches.

The lateral plantar artery is a significant blood vessel in the human body, specifically within the foot. It is one of the terminal branches of the posterior tibial artery, the other being the medial plantar artery. The lateral plantar artery plays a crucial role in supplying blood to the lateral aspect of the foot and the plantar surface.

Anatomy

The lateral plantar artery arises from the posterior tibial artery, which itself is a continuation of the popliteal artery. After branching from the posterior tibial artery, the lateral plantar artery travels obliquely across the sole of the foot.

Course

The artery begins its course by passing deep to the abductor hallucis muscle, then continues laterally and anteriorly between the flexor digitorum brevis and the quadratus plantae muscles. As it progresses, it moves towards the base of the fifth metatarsal bone.

Branches

The lateral plantar artery gives off several branches, including:

• Muscular branches: These supply the muscles of the sole of the foot.
• Cutaneous branches: These supply the skin of the lateral aspect of the foot.
• Plantar metatarsal arteries: These are four in number and supply the toes.

The artery eventually forms the plantar arch by anastomosing with the deep plantar branch of the dorsalis pedis artery.

Function

The primary function of the lateral plantar artery is to supply oxygenated blood to the structures of the lateral and plantar regions of the foot. This includes the muscles, skin, and bones of these areas, ensuring proper function and health of the foot.

Clinical Significance

The lateral plantar artery is of clinical importance due to its role in foot circulation. Compromise of this artery, such as in peripheral artery disease, can lead to ischemia and complications in the foot. Surgical procedures involving the foot, such as bunionectomy or fasciotomy, must consider the location and course of the lateral plantar artery to avoid inadvertent damage.

Related Pages

• Posterior tibial artery
• Medial plantar artery
• Plantar arch
• Dorsalis pedis artery