Types of Sequestrum

Shazy

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Since there isn't a complete post on it online, I thought I'd write about it.

Tubular or diaphyseal sequestrum is seen in acute pyogenic osteomyelitis.

Ring sequestrum is seen in amputation stump and at Steinmann pins.

Ivory sequestrum is seen in syphilis.

Fine sandy sequestrum is seen in viral osteomyelitis.

Coarse sandy sequestrum is seen in out of cavity TB (for example, central body of vertebra)

Flake or Feathery sequestrum is seen in the cavity tuberculosis (for example, TB rib)

Kissing sequestrum is seen in peridiscal TB vertebra.

Button hole sequestrum is seen after radiation.

Coke sequestrum is seen in cancellous bone.

Bombay or black sequestrum is due to H2S & pollution.

Black sequestrum is also seen in actinomycosis.
 
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