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': 'Wandering acetabulum is seen in - \nSelect and explain. \nA. Fracture acetabulum, B. Dislocation of femur, C. CDH, D. Tubeculosis of hip', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Wandering acetabulum is seen in tuberculosis of hip when destroyed head dislocates from the acetabulum.', 'role': 'assistant'}]