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 traumatic injury of the hip - \nSelect and explain. \nA. Anterior dislocation is common, B. Posterior dislocation is common, C. Avascular fracture is common, D. Visceral injury usually associated with fracture femur', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Posterior dislocation is more common (not anterior dislocation).\nMost of the time dislocation can be reduced by closed reduction.\nVisceral injuries are usually associated with pelvic fracture (not femur fracture).', 'role': 'assistant'}]