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': 'Following are the common sites of Avascular necrosis, EXCEPT: \nSelect and explain. \nA. Proximal half of scaphoid, B. The body of talus, C. Patella, D. Head of the femur', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Patella Avascular necrosis is common in head of femur, proximal scaphoid and body of talusQ', 'role': 'assistant'}]