8. Foot and Ankle MCQs

Talar neck fractures are notorious for carrying a high risk of avascular necrosis of the talar body. The primary blood supply to the talar body enters through the tarsal canal and is typically a branch of which vessel?

During surgical repair of a bi-malleolar ankle fracture equivalent, the surgeon evaluates the deltoid ligament complex. Which component of the deltoid ligament is the thickest and serves as the primary restraint against lateral translation of the talus?

A patient presents with tarsal tunnel syndrome. During the surgical release, the flexor retinaculum is divided. What is the most posterior/lateral structure passing beneath the flexor retinaculum behind the medial malleolus?

Figure 24 shows the arthroscopic view of a patient with ankle impingement syndrome. This is commonly seen after high ankle sprains and represents fibrotic granulation thickening of what structure?

During a lateral approach to the calcaneus for open reduction internal fixation of a calcaneal fracture, the sural nerve is at risk. What is the anatomical course of the sural nerve at the level of the lateral malleolus?

The major arterial supply to the talus enters the bone through the tarsal canal. This artery is a branch of which of the following vessels?

During a lateral approach to the fibula, the superficial peroneal nerve is at risk of iatrogenic injury. At what approximate location does this nerve typically pierce the crural fascia to become subcutaneous?

The medial plantar nerve provides motor innervation to a specific subset of intrinsic foot muscles. Which of the following muscles is innervated by the medial plantar nerve?

From anterior to posterior, what is the correct sequence of structures passing behind the medial malleolus within the tarsal tunnel?

Displaced fractures of the talar neck frequently result in osteonecrosis of the talar body due to disruption of its vascular supply. Which artery provides the primary blood supply to the body of the talus?

The medial plantar nerve provides motor innervation to which of the following muscles?

Avascular necrosis of the talus is a well-known complication of talar neck fractures due to its tenuous blood supply. Which structure serves as the primary blood supply to the talar body?

During a lateral approach to the proximal tibia and knee, the surgeon isolates a nerve that passes posterior to the biceps femoris tendon and wraps around the fibular neck. Injury to this nerve leads to severe weakness in which of the following movements?

In the standard posterolateral approach to the ankle for fixation of a posterior malleolus fracture, the internervous plane lies between the flexor hallucis longus and which of the following structures?

During open reduction and internal fixation of a calcaneus fracture via an extensile lateral approach, the surgeon elevates a full-thickness subperiosteal flap. Which nerve is at the highest risk of transection in the proximal vertical limb of the incision?

Figure 10 demonstrates standard portals for ankle arthroscopy.

When establishing the posterolateral portal, the sural nerve is at risk. What is its normal anatomical relationship to the portal site?

Figure 13 displays a cross-section of the midfoot.

The true Lisfranc ligament connects which two osseous structures?

A patient develops an isolated acute compartment syndrome of the lateral compartment of the lower leg. Which of the following physical exam findings is most expected?

A surgeon is performing a midfoot reconstruction and exploring the plantar aspect of the foot. The Master Knot of Henry is identified. This anatomical landmark represents the intersection of which two structures?

A 25-year-old male sustains an anterior knee dislocation. After closed reduction in the emergency department, his foot is warm with palpable dorsalis pedis pulses. His ankle-brachial index (ABI) is 0.8. What is the most appropriate next step in management?