ABFAS Surgical Anatomy and Biomechanics Flashcards
6 cards from real ABFAS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 ABFAS Surgical Anatomy and Biomechanics flashcards as text
The flexor hallucis longus tendon passes through which anatomical structure before entering the plantar foot?
Answer: Sustentaculum tali groove
The flexor hallucis longus tendon passes through a groove on the inferior surface of the sustentaculum tali before entering the plantar compartment.
Which compartment of the leg contains the peroneus longus and brevis tendons?
Answer: Lateral compartment
The peroneus (fibularis) longus and brevis muscles reside in the lateral compartment of the leg and evert and plantarflex the foot.
In a cavus foot deformity, the calcaneal pitch angle is typically:
Answer: Increased above 30°
Cavus foot is associated with an elevated calcaneal pitch angle (>30°) due to the plantarflexed forefoot and raised medial arch.
The windlass mechanism of the foot describes the role of which structure in arch supination?
Answer: Plantar fascia
The windlass mechanism describes how toe dorsiflexion tightens the plantar fascia, raising the arch and supinating the foot during propulsion.
Which metatarsal is most commonly involved in a stress fracture due to its rigid articulation and reduced mobility?
Answer: Second metatarsal
The second metatarsal is the most common site of metatarsal stress fractures because its rigid articulation at the Lisfranc joint concentrates stress during repetitive loading.
Which anatomical structure forms the roof of the tarsal tunnel?
Answer: Flexor retinaculum
The flexor retinaculum (laciniate ligament) forms the roof of the tarsal tunnel, spanning from the medial malleolus to the calcaneus.