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: Surgery
[{'content': "Non - union is a complication of : \nSelect and explain. \nA. Scaphoid, B. Colle's, C. Inter- trochanteric of hip, D. Supra condylor of the humerus", 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Scaphoid Fracture Fracture head & neck femur, fracture body of talus and fractures through waist of scaphoid most commonly leads to nonunion and avascular necrosis due to poor blood supplyQ', 'role': 'assistant'}]