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
Earliest site of bone involvement in hematogenous osteomyelitis - 
Select and explain. 
A. Metaphysis, B. Diaphys is, C. Epiphysis, D. Point of entry of the nutrient artery
A: Metaphysis
Answer: A: Metaphysis 
Explanation: Metaphysis of long bone is the earliest and most common site involved.