This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Avascular Necrosis, Subject name: Orthopaedics
Avascular necrosis can be a possible sequelae of fracture of all of the following bones, except: 
Select and explain. 
A. Femur neck, B. Scaphoid, C. Talus, D. Calcaneum
D: Calcaneum
Answer: D: Calcaneum 
Explanation: Ans. (d) Calcaneum:Ref: Maheshwari 5th ed. / 50, 2nd 141; Adams 9th/62Common sites of avascular necrosisHead of femurFracture neck femur Posterior dislocation of hipProximal pole of scaphoidFracture through waist of scaphoidBody of Talus LunateFracture through neck of talus Dislocation