ANTERIOR TIBIAL ARTERY Meaning and
Definition
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The anterior tibial artery is a major blood vessel that belongs to the lower extremity's arterial system, specifically in the lower leg. It is one of two terminal branches of the popliteal artery, originating below the knee joint. The artery traverses along the front of the leg, running parallel to the tibia bone, hence its name.
The anterior tibial artery primarily supplies oxygenated blood to structures within the anterior compartment of the leg, including the muscles, tendons, bones, and skin. It arises within the popliteal fossa, just beneath the level of the knee joint, and descends vertically through the interosseous membrane between the tibia and fibula bones. Notably, it passes underneath the extensor retinaculum, a dense band of fibrous tissue that holds the tendons in place, allowing them to move efficiently as they extend the toes.
As the anterior tibial artery travels inferiorly, it continues its course, giving off various branches to ensure adequate blood supply to the lower leg. Near the ankle, it terminates by transforming into the dorsalis pedis artery, which supplies blood to the dorsum (top) of the foot. Overall, the anterior tibial artery plays a crucial role in sustaining the vitality and functioning of structures in the anterior compartment of the leg and facilitating proper blood circulation to the foot.
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