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': '8 year old boy, history of fall from 10 feet Pain in the right ankle. X-ray normal at that time after 2 years he developed calcaneovalgus deformity,likely diagnosis \nSelect and explain. \nA. Tibial epiphyseal injury, B. Fibular fracture, C. Bimalleolar fracture, D. Subtalar joint injury', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]