Acute osteomyelitis is most frequently caused by:: (A) Staphylococcus aureus, (B) Staphylococcus albus, (C) Staph. aureus + Staph. albus, (D) None of the above
Answer is C. Acute osteomyelitis is usually a polymicrobial infection. Different types of organisms may be cultured from these lesions; the most common are Staphylococcus aureus and Staphylococcus albus, and various streptococci. Anaerobes such as Bacteroides, Porphyromonas or Prevotella species also predominate.
Ref: Shafer's textbook of oral pathology 7th edition page 493