Which artery is named as the principal supplier to the talus?

Which artery is named as the principal supplier to the talus?

• A. Artery of tarsal canal
• B. Posterior tibial
• C. Dorsalis pedis
• D. Anterior tibial

Answer: (A)

The main idea here is that the talus relies on a limited arterial supply, and the key source is the artery of the tarsal canal. This artery, a branch of the posterior tibial artery, enters the talus through the tarsal canal and provides the majority of its blood flow. Because of this, it’s considered the principal supplier to the talus. The posterior tibial artery as a whole feeds many foot structures, but the principal talar input comes specifically from the artery of the tarsal canal, not from the parent vessel in general. The dorsalis pedis and the anterior tibial arteries are more about the dorsal and anterior aspects of the foot and do not serve as the primary talar source. Understanding this focus on the artery of the tarsal canal also explains why disruption to this path can significantly impact talar vascularity and raise risk for avascular necrosis.

The main idea here is that the talus relies on a limited arterial supply, and the key source is the artery of the tarsal canal. This artery, a branch of the posterior tibial artery, enters the talus through the tarsal canal and provides the majority of its blood flow. Because of this, it’s considered the principal supplier to the talus.

The posterior tibial artery as a whole feeds many foot structures, but the principal talar input comes specifically from the artery of the tarsal canal, not from the parent vessel in general. The dorsalis pedis and the anterior tibial arteries are more about the dorsal and anterior aspects of the foot and do not serve as the primary talar source. Understanding this focus on the artery of the tarsal canal also explains why disruption to this path can significantly impact talar vascularity and raise risk for avascular necrosis.