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
Supracondylar fracture is usually caused by - 
Select and explain. 
A. Hyperflexion injury, B. Axial rotation, C. Extension injury, D. Hyperextension injury
D: Hyperextension injury
Answer: D: Hyperextension injury 
Explanation: Supracondylar fracture (most common extension type) occurs due to hyperextension injury, usually due to fall on outstretched hand.
Flexion type of supracondylar fracture occurs due to fall directly on elbow.