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
All of the following are associated with supracondylar fracture of humerus, EXCEPT : 
Select and explain. 
A. It is uncommon after 15 yrs of age, B. Extension type fracture is more common than the flexion type, C. Cubitus varus deformity commonly results following mal union, D. Ulnar nerve is most commonly involved
D: Ulnar nerve is most commonly involved
Answer: D: Ulnar nerve is most commonly involved 
Explanation: D i.e. Ulnar nerve is most commonly involved In few cases of supracondylar humerus tardy ulnar nerve palsy may be seen. (Tachdjian - 2166)