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': "Treatment of choice for non-united fracture of lower 1/4th tibia with multiple discharging sinuses & various puckered scar with 4 cm shortening of leg - \nSelect and explain. \nA. Plating, B. External fixator, C. Ilizarov's fixator, D. Intramedullary nail", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Patient in question has infected non-union (multiple discharging sinuses & various pukered scar) with shortening of 4 cms. Ilizanov fixation with distraction osteogenesis will be the best option.', 'role': 'assistant'}]