Where are ulcers due to arterial insufficiency most frequently found?

Ulcers resulting from arterial insufficiency are typically located in areas where there is decreased blood flow and increased pressure due to gravity and activity. The toes and distal foot are particularly vulnerable because they are the farthest from the heart, making them more susceptible to the effects of reduced arterial circulation. The lack of adequate blood supply can lead to tissue ischemia, damage, and ultimately ulcer formation in these regions.

In contrast, areas such as the heels, thighs, and knees might not experience the same level of ischemia because they either receive better blood flow or are less subjected to the same mechanical stresses encountered by the toes and distal foot. Therefore, identifying ulcers in the toes and distal foot as the most frequent sites for arterial insufficiency ulcers aligns with our understanding of vascular anatomy and the pathophysiology of peripheral artery disease.