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
Avascular necrosis seen in -a) # Surgical neck of humerusb) # Neck of scapulac) # Neck of talusd) # Neck of femure) # Neck of radius 
Select and explain. 
A. ab, B. cd, C. bd, D. ac
B: cd
Answer: B: cd 
Explanation: Amongst the given options only talus fracture (neck talus fracture) causes AVN.