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: Unknown
[{'content': "Tuberculous arthritis of a joint in sites other than the spine in advanced cases leads to whcih of the following - \nSelect and explain. \nA. Bony ankylosis, B. Fibrous ankylosis, C. Loose joints, D. Charcot's joints", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans- B Fibrous ankylosis is usual outcome of healed tuberculosis of joints except in spine where bony ankylosis takes place.', 'role': 'assistant'}]