This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lower Limb Traumatology, Subject name: Orthopaedics
[{'content': "Ator's fracture involves: \nSelect and explain. \nA. Talus, B. Calcaneum, C. Tibia, D. Hip", 'role': 'user'}, {'content': "Answer: A \nExplanation: Ator's fracture Fracture of neck of the talus", 'role': 'assistant'}]