This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Orthopaedics
[{'content': 'Microorganism which causes pyogenic osteomyelitis is ? \nSelect and explain. \nA. Streptococcus, B. Staph aureus, C. Corynebacterium, D. Neisseria gonorrhoeae', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Staphylococcus aureus causes 80-90% of cases of acute pyogenic osteomyelitis. S aureus has a receptor for collagen, which contributes to its pathogenicity. Other organisms that cause osteomyelitis include: Escherichia coli and Pseudomonas in intravenous drug users and patients with urinary tract infections. Haemophilus influenzae and Group B Streptococcus in neonates. Salmonella in patients with sickle cell disease. REF : Maheshwari book of ohopedics 6th Ed.', 'role': 'assistant'}]