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': 'Supracondylar fracture is usually caused by - \nSelect and explain. \nA. Hyperflexion injury, B. Axial rotation, C. Extension injury, D. Hyperextension injury', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Supracondylar fracture (most common extension type) occurs due to hyperextension injury, usually due to fall on outstretched hand.\nFlexion type of supracondylar fracture occurs due to fall directly on elbow.', 'role': 'assistant'}]