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
Fracture supracondylar fracture is usually caused by : 
Select and explain. 
A. Hyper flexion injury, B. Axial rotation, C. Extension injury, D. Hyper extension injury
D: Hyper extension injury
Answer: D: Hyper extension injury 
Explanation: D i.e. Hyper extension injury