Which vessel passes through the interosseous membrane to join the Dorsalis pedis at the ankle?

The anterior tibial vessels are the correct choice because they are specifically responsible for supplying blood to the anterior compartment of the leg and orchestrate the transition from the leg to the foot by passing through the interosseous membrane, which is a fibrous sheet between the tibia and fibula. This passage allows the anterior tibial artery to reach the dorsum of the foot where it ultimately becomes the dorsalis pedis artery.

The anterior tibial artery branches off from the popliteal artery and travels down the leg, piercing the interosseous membrane to enter the ankle region where it then continues to supply blood to the foot. This is a critical pathway for ensuring adequate perfusion to the dorsal aspect of the foot, which is essential for mobility and overall foot health.

In contrast, the other options pertain to different vascular anatomies that do not join the dorsalis pedis in this manner. The posterior tibial vessels primarily run posteriorly and medially, the ankle vascular network refers to the arterial supply at the ankle level that comprises multiple vessels, and the fibular vessels are involved in supplying blood to the lateral compartment of the leg. Therefore, they do not pass through the interosseous membrane to connect with the dorsalis pedis