ABFAS ABFAS Pathology and Diagnosis

Question 1

Charcot neuroarthropathy most commonly affects which joint region of the foot?

Accepted Answer

Tarsometatarsal (Lisfranc) joints

Answer

Hallux MTP joint

Answer

Subtalar joint

Answer

Ankle joint

Question 2

Which radiographic sign indicates avascular necrosis of the talus following a fracture?

Accepted Answer

Hawkins sign (subchondral lucency at 6–8 weeks)

Answer

Periosteal new bone formation

Answer

Increased talar neck cortical density acutely

Answer

Widening of the ankle mortise

Question 3

Plantar fasciitis is most commonly associated with pain at which location?

Accepted Answer

Medial calcaneal tubercle

Answer

Metatarsal heads

Answer

Central plantar arch

Answer

Fifth metatarsal base

Question 4

Which skin lesion on the plantar foot is characterized by interrupted skin lines and central black dots?

Accepted Answer

Verruca plantaris (plantar wart)

Answer

Tyloma (callus)

Answer

Heloma durum (hard corn)

Answer

Porokeratosis plantaris

Question 5

Morton's neuroma (interdigital neuroma) most commonly occurs in which web space?

Accepted Answer

Third web space

Answer

First web space

Answer

Second web space

Answer

Fourth web space

Question 6

Tarsal coalition most commonly occurs between which two bones?

Accepted Answer

Calcaneus and navicular

Answer

Talus and navicular

Answer

Calcaneus and cuboid

Answer

Navicular and medial cuneiform