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': '80 years old female after fall developed an inability to walk with external rotation deformity, on examination SLR is not possible and broadening of the GT and lateral border of foot touching the bed. The most probable diagnosis is - \nSelect and explain. \nA. # Neck femur, B. # Intertrochanteric femur, C. # Subtrochanteric femur, D. # Greater trochanter', 'role': 'user'}, {'content': 'Answer: B \nExplanation: It has been explained that external rotation occurs with both neck femur fracture and IT fracture.\nHowever, in this question, one important information has been provided :- Broadening of trochanter.\nBroadening of trochanter occurs in IT fracture if the fracture causes split in GT.\nIn femoral neck fracture trochanters are normal.', 'role': 'assistant'}]