Which artery supplies the foot and is located behind the medial ankle?

The correct answer is the posterior tibial artery, which is responsible for supplying blood to the foot. This artery branches from the popliteal artery and runs down the posterior aspect of the leg. As it progresses, it travels behind the medial malleolus, which is the bony prominence on the inside of the ankle. From this point, the posterior tibial artery provides several branches that deliver oxygenated blood to the structures of the foot, including the plantar surface.

Understanding the anatomical location of the posterior tibial artery is crucial for clinical practice, especially for procedures involving the foot and ankle, as well as for assessing vascular health in these regions. In contexts such as diabetic foot care, recognition of the blood supply—including the role of the posterior tibial artery—is vital for preventing complications related to poor circulation.