Hindfoot Trauma
A 32-year-old man sustains a high-energy injury in a motorcycle accident. Radiographs show a talar neck fracture with subtalar dislocation but the tibiotalar joint remains reduced. The foot is neurovascularly intact. At 8 weeks post-operatively following ORIF, radiographs show a subchondral lucency (Hawkins sign) in the talar dome. Regarding talus fractures and osteonecrosis:
Mark each as TRUE or FALSE
The talus has a precarious blood supply with 60% of its surface covered by articular cartilage (no p...
The Hawkins classification for talar neck fractures predicts AVN risk: Type I (non-displaced) 0-15% ...
AVN risk decreases with higher Hawkins grade; the talus has excellent periosteal blood supply; Hawki...
The Hawkins sign is a subchondral lucency in the talar dome seen at 6-8 weeks post-injury; it indica...
Surgical treatment principles: emergent reduction of dislocations to restore blood supply; anatomic ...
Answer the questions to see explanations
Click T (True) or F (False) for each option