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': 'Most common type of Elbow dislocation is? \nSelect and explain. \nA. Posterior, B. Posterolateral, C. Posteromedial, D. Lateral', 'role': 'user'}, {'content': "Answer: A \nExplanation: Posterior REF: Introduction to emergency medicine - Elizabeth Mitchell, Ron Medzon Page 662, Wheeless' Textbook of Ohopaedics ( Elbow dislocation is the second most common major joint dislocation; dislocation is usually closed and posterior (comprise over 90% of elbow injuries). Typically, the mechanism is a fall on an outstretched, extended arm. Clinical examination is generally sufficient for diagnosis", 'role': 'assistant'}]