Microorganism which causes pyogenic osteomyelitis is ?: (A) Streptococcus, (B) Staph aureus, (C) Corynebacterium, (D) Neisseria gonorrhoeae
Answer is B. 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.