This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Orthopaedics
[{'content': 'Traumatic fracture showing avascular necrosis - \nSelect and explain. \nA. Femoral neck, B. Surgical neck of humerus, C. Body of talus, D. Cuboid', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Amongst the given options only talus fracture (neck talus fracture) causes AVN.', 'role': 'assistant'}]