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
Gunstock deformity is seen in 
Select and explain. 
A. Lateral condyle fracture, B. Radial head fracture, C. Ulnar head fracture, D. Supracondylar fracture of humerus
D: Supracondylar fracture of humerus
Answer: D: Supracondylar fracture of humerus 
Explanation: A most common complication of supracondylar fracture is malunion,
which further can lead to cubitus varus deformity.
This is because of the reason that fracture unites with the distal fragment tilted medially and in internal rotation.
This cubitus varus is usually termed as gunstock deformity.
Most common nerve damaged in supracondylar fracture: Anterior Interosseous Nerve.