ABFAS ABFAS Surgical Anatomy and Biomechanics

Question 1

Which tarsal bone serves as the keystone of the medial longitudinal arch?

Accepted Answer

Talus

Answer

The talus is considered the keystone of the medial longitudinal arch because it transmits body weight from the tibia to the foot.

Question 2

The Achilles tendon inserts on which surface of the calcaneus?

Accepted Answer

Posterior surface

Answer

The Achilles tendon inserts on the posterior surface of the calcaneal tuberosity, serving as the primary plantarflexor attachment.

Question 3

In normal gait, which phase involves the greatest load on the forefoot?

Accepted Answer

Terminal stance and pre-swing

Answer

Terminal stance and pre-swing involve the greatest forefoot loading as the heel rises and body weight transfers anteriorly through the metatarsal heads.

Question 4

Which nerve provides sensory innervation to the first web space of the foot?

Accepted Answer

Deep peroneal nerve

Answer

The deep peroneal nerve provides sensory innervation to the first dorsal web space between the hallux and second toe.

Question 5

The spring ligament (plantar calcaneonavicular ligament) primarily supports which structure?

Accepted Answer

Head of the talus

Answer

The spring ligament acts as a sling supporting the head of the talus and is critical to maintaining the medial longitudinal arch.

(ABFAS) American Board of Foot and Ankle Surgery Practice Test

(ABFAS) American Board of Foot and Ankle Surgery Practice Test

ABFAS ABFAS Surgical Anatomy and Biomechanics