Which forefoot landmark appears as a depression on the anterolateral talus?

Which forefoot landmark appears as a depression on the anterolateral talus?

• A. Cuboid
• B. Peroneal tubercle
• C. Styloid process of 5th metatarsal
• D. Sinus tarsi

Answer: (D)

The structure that appears as a depression on the anterolateral talus is the sinus tarsi. This small hollow sits between the talus and calcaneus on the lateral aspect of the foot and is a key feature of the subtalar joint region. It’s a depression on the talus itself where ligaments and the tarsal canal pass, not a bone prominence. The other options are not depressions on the talus: the cuboid is a separate bone in the midfoot; the peroneal tubercle is a bump on the calcaneus that separates the peroneal tendons; and the styloid process of the fifth metatarsal is a projection at the base of the fifth metatarsal.

The structure that appears as a depression on the anterolateral talus is the sinus tarsi. This small hollow sits between the talus and calcaneus on the lateral aspect of the foot and is a key feature of the subtalar joint region. It’s a depression on the talus itself where ligaments and the tarsal canal pass, not a bone prominence.

The other options are not depressions on the talus: the cuboid is a separate bone in the midfoot; the peroneal tubercle is a bump on the calcaneus that separates the peroneal tendons; and the styloid process of the fifth metatarsal is a projection at the base of the fifth metatarsal.