This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2019, Subject name: Anatomy
Highest point of iliac crest is seen at; 
Select and explain. 
A. L3, B. L4, C. S1, D. S2
B: L4
Answer: B: L4 
Explanation: Highest point of iliac crest lies at the level of the 4th lumbar veebral body (L4). Clinical significance: Site of bone marrow harvests to collect the stem cells used in bone marrow transplantation. Most ideal donor site forbone grafting when a large quantity of bone is needed. To estimate site for lumbar puncture as LP is done at the level b/w L3-L4 or b/w L4-L5 and highest point of iliac crest coincides with it.