Question
Which of the following is not TRUE about osteomyelitis?
| A. |
Epiphysis most commonly involved region
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| B. |
In sickle cell anemia salmonella is causative organism
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| C. |
Sequestrum is a piece of dead bone
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| D. |
Involucrum is dense sclerotic bone overlying a sequestrum
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Show Answer
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Correct Answer » A
Explanation
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In acute hematogenous osteomyelitis, the most common site of involvement is the metaphysis of long bones (such as the distal femur or proximal tibia), not the epiphysis.
The metaphysis is favored due to its slow-flowing, hairpin-loop vascular structure, which allows bacteria to settle.
B (True): Salmonella is a common cause of osteomyelitis specifically in patients with sickle cell anemia.
C (True): A sequestrum is defined as a piece of dead, necrotic bone that has separated from healthy bone.
D (True): Involucrum is the new, dense, sclerotic bone that forms around a sequestrum.
