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': "A patient with history of recurrent posterior dislocation of humerus is evaluated for a 'Hill-Sach's lesion. Which aspect of the head of humerus is likely to show this lesion in the above patient? \nSelect and explain. \nA. Anteromedial, B. Anterior, C. Posterolateral, D. Posterior", 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Anteromedial', 'role': 'assistant'}]