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': 'Avascular necrosis can be a possible sequelae of fracture of all of the following bones, except - \nSelect and explain. \nA. Femur neck, B. Scaphoid, C. Talus, D. Calcanuem', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Some of the common sites where avascular necrosis occurs are', 'role': 'assistant'}]