DPM Foot & Ankle Anatomy 3

Question 1

The anterior talofibular ligament (ATFL) resists which primary motion at the ankle?

Accepted Answer

Inversion and plantarflexion

Answer

The ATFL is the weakest lateral ankle ligament and primarily resists anterior talar displacement combined with inversion and plantarflexion.

Question 2

Which nerve provides sensory innervation to the web space between the first and second toes (dorsal aspect)?

Accepted Answer

Deep peroneal nerve

Answer

The deep peroneal nerve provides sensory innervation to the first dorsal web space (between hallux and second toe) and motor supply to the extensor digitorum brevis.

Question 3

The sustentaculum tali is a shelf-like projection of which bone?

Accepted Answer

Calcaneus

Answer

The sustentaculum tali is a medial shelf projection of the calcaneus that supports the talus and provides a groove for the flexor hallucis longus tendon.

Question 4

Which artery is the primary blood supply to the talus, entering through the tarsal canal?

Accepted Answer

Artery of the tarsal canal (from posterior tibial)

Answer

The artery of the tarsal canal, a branch of the posterior tibial artery, is the dominant blood supply to the talar body, explaining avascular necrosis risk after fractures.

Question 5

The plantar fascia originates from which specific calcaneal landmark?

Accepted Answer

Medial process of calcaneal tuberosity

Answer

The plantar fascia (aponeurosis) originates primarily from the medial process of the calcaneal tuberosity and fans out to the five metatarsal heads.

(DPM) Doctor of Podiatric Medicine Practice Test

(DPM) Doctor of Podiatric Medicine Practice Test

DPM Foot & Ankle Anatomy 3