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
Which of the following fracture cause cubitus varus deformity as a complication? 
Select and explain. 
A. Fracture lateral condyle of humerus, B. Supra condylar fracture of humerus, C. Fracture radial head, D. Chronic osteomyelitis
B: Supra condylar fracture of humerus
Answer: B: Supra condylar fracture of humerus 
Explanation: Cubitus varus deformity or gun stalk deformity is a common late complication of supra condylar fracture of humerus. Other late complications associated with it are myosistis ossificans and Volmann's ischemic contracture. Reference: Essential Ohopaedics By J Maheswari , 3rd edition page 85.