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': 'Uncomplicated shoulder dislocation most commonly occurs in the following direction - \nSelect and explain. \nA. Anterior, B. Posterior, C. Superior, D. Medially', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Anterior dislocation of shoulder is the most common type of shoulder dislocation.\nPreglenoid type of dislocation is the most common anterior dislocation.', 'role': 'assistant'}]