8. Foot and Ankle MCQs

In the plantar aspect of the foot, the "Master Knot of Henry" is a critical anatomic landmark where which two structures cross?

A 28-year-old man sustains a displaced fracture of the talar neck. Which of the following provides the primary blood supply to the body of the talus and is at greatest risk of disruption in this injury?

During the normal human gait cycle, maximum dorsiflexion of the ankle occurs during which phase?

A 24-year-old athlete sustains an inversion ankle sprain. Biomechanical studies indicate that the primary ligamentous restraint to inversion of the talus when the ankle is placed in maximal dorsiflexion is the:

A 55-year-old female presents with progressive flattening of her longitudinal arch. Pathology of the posterior tibial tendon is suspected. Which associated ligamentous structure is most commonly attenuated and primarily responsible for supporting the head of the talus?

A 19-year-old soccer player suffers an inversion ankle sprain. During the physical examination, the anterior drawer test is positive when the ankle is plantarflexed. Which ligament is primarily assessed, and what is its normal kinematic behavior?

A patient is evaluated for chronic ankle instability. Clinical examination includes the anterior drawer test and talar tilt test. Regarding the kinematics of the lateral ankle ligaments, in which position is the calcaneofibular ligament (CFL) under the greatest tension?

A 26-year-old soccer player sustains a high ankle sprain with widening of the tibiofibular clear space on radiographs. Which of the following ligaments of the distal tibiofibular syndesmosis provides the greatest biomechanical strength and resistance to diastasis?

A 45-year-old woman is being evaluated for a custom orthosis to correct a flexible pes planovalgus deformity. Understanding normal hindfoot kinematics is essential. The axis of rotation of the subtalar joint is best described by which of the following orientations?

A 32-year-old male sustains a highly comminuted talar neck fracture. The primary blood supply to the body of the talus, which is now critically disrupted, is derived from the artery of the tarsal canal. This vessel is an anatomic branch of which artery?

A patient with a severely displaced fibular neck fracture presents with a new foot drop. Physical examination reveals weakness in both ankle dorsiflexion and eversion, as well as numbness over the dorsum of the foot. Which nerve is most likely injured?

Surgical treatment of a highly comminuted talar neck fracture requires extensive dissection, increasing the risk of avascular necrosis. The dominant blood supply to the body of the talus arises from which of the following arteries?

The deep peroneal nerve supplies the motor innervation to the anterior compartment of the leg. Which of the following muscles is also innervated by the deep peroneal nerve but resides anatomically outside the anterior compartment of the leg?

At the anatomically critical "Master Knot of Henry" in the plantar midfoot, which of the following relationships is correct?

In a severe external rotation ankle injury, the distal tibiofibular syndesmosis may be completely disrupted. Which of the following syndesmotic ligaments provides the greatest mechanical resistance to lateral translation of the fibula?

Entrapment of the deep peroneal nerve beneath the inferior extensor retinaculum (anterior tarsal tunnel syndrome) typically results in sensory loss in which of the following distributions?

The 'master knot of Henry' is a surgically important anatomical landmark in the plantar aspect of the foot. It is characterized by the crossing of which two tendons?

During a lateral extensile approach to the calcaneus for fracture fixation, the sural nerve is at risk. What is its typical anatomical location relative to the lateral malleolus?

A 35-year-old male sustains a severe knee trauma resulting in a proximal fibula fracture and complete common peroneal nerve palsy. On physical examination, which of the following specific sensory deficits is expected alongside a foot drop?

A 25-year-old male sustains a traumatic anterior knee dislocation. Upon closed reduction, his Ankle-Brachial Index (ABI) is 0.7, and a CT angiogram confirms a popliteal artery occlusion. What is the maximum recommended warm ischemia time before irreversible muscle necrosis begins in the lower extremity?