This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Management in Orthopedics, Subject name: Orthopaedics
[{'content': 'Perkin&;s traction is used in \nSelect and explain. \nA. shaft of femur < 2years, B. shaft of femur 2-10years, C. shaft of femur >10years, D. shaft of femur in adults', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Perkins traction-fracture shaft of femur in adults', 'role': 'assistant'}]