This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Management in Orthopedics, Subject name: Orthopaedics
Which of the following is ideal site for harvesting bone graft- 
Select and explain. 
A. Iliac crest, B. Distal end of the humers, C. Distal end of femur, D. Fibula
A: Iliac crest
Answer: A: Iliac crest 
Explanation: Cancellous bone can be obtained from the thicker poions of the ILIUM, greater trochanter, proximal metaphysis of the tibia, lower radius, olecranon, or from an excised femoral head. Coical autografts can be harvested from any convenient long bone or from the ILIAC CREST ; they usually need to be fixed with screws, sometimes reinforced by a plate and can be placed on the host bone, or inlaid, or slid along the long axis of the bone. REF:Apley 's system of ohopaedics- 9th edn - pg no 811.