ABFAS Pathology and Diagnosis 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 Pathology and Diagnosis flashcards as text
Charcot neuroarthropathy most commonly affects which joint region of the foot?
Answer: Tarsometatarsal (Lisfranc) joints
Charcot neuroarthropathy most commonly affects the tarsometatarsal (Lisfranc) joint complex, accounting for approximately 30–40% of cases.
Which radiographic sign indicates avascular necrosis of the talus following a fracture?
Answer: Hawkins sign (subchondral lucency at 6–8 weeks)
The Hawkins sign—subchondral lucency seen at 6–8 weeks post-fracture—indicates disuse osteopenia and is a positive prognostic sign that blood supply is intact.
Plantar fasciitis is most commonly associated with pain at which location?
Answer: Medial calcaneal tubercle
Plantar fasciitis classically presents with pain at the medial calcaneal tubercle, the proximal attachment of the plantar fascia.
Which skin lesion on the plantar foot is characterized by interrupted skin lines and central black dots?
Answer: Verruca plantaris (plantar wart)
Verruca plantaris interrupts normal skin lines (dermatoglyphics) and contains thrombosed capillaries appearing as central black dots, distinguishing it from callus.
Morton's neuroma (interdigital neuroma) most commonly occurs in which web space?
Answer: Third web space
Morton's neuroma most commonly occurs in the third web space (between the third and fourth metatarsals), followed by the second web space.
Tarsal coalition most commonly occurs between which two bones?
Answer: Calcaneus and navicular
Calcaneonavicular coalition is the most common tarsal coalition (approximately 53%), followed by talocalcaneal coalition.