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: Pediatrics
Septic arthritis in a 2-year-old child is often caused by – 
Select and explain. 
A. Hemophilous influenzae, B. Staphylococcus aureus, C. Gonococi, D. Pneumococci
B: Staphylococcus aureus
Answer: B: Staphylococcus aureus 
Explanation: Bacteria are the most common pathogens in acute skeletal infections.
The microbial spectrum is diverse in suppurative arthritis, but Staphylococcus aureus infection is most common.
Salmonella is the most common cause of osteomyelitis in children with sickle cell anemia.