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
All are injuries of the lower end of radius except : 
Select and explain. 
A. Smith's fracture, B. Colle's fracture, C. Night stick fracture, D. Barton's fracture
C: Night stick fracture
Answer: C: Night stick fracture 
Explanation: Colle's fracture and smith's fracture : Extra - articular fracture of distal end radius.
Barton's fracture : Intra - articular fracture of distal end radius with carpus dislocation.
Nightstick fracture : Isolated fracture of the ulna.