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': 'In the case of a 70-year-old lady with an intracapsular fracture of the neck of femur, the ideal treatment would be - \nSelect and explain. \nA. Closed traction, B. Hemiarthropalsty, C. Internal fixation with nail, D. Internal fixation with nail and plate', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Treatment of choice in patients 70 years or above is arthroplasty; either hemiarthroplasty (if no pre-existing arthritis) or total hip replacement (if pre-existing arthritis is present).', 'role': 'assistant'}]