Necrotic infected bone that requires removal for successful treatment is known as?

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In chronic osteomyelitis, dead bone that has become separated from living bone is called a sequestrum. This piece of necrotic bone acts as a persistent source of infection because it has no blood supply, so antibiotics can’t reach it. For successful treatment, the sequestrum must be surgically removed to clear the infection and allow healing. The surrounding new bone formed around it is called an involucrum, which reflects the body's attempt to wall off the infection, but it isn’t the part that needs removal. Osteomyelitis describes the bone infection overall, and necrosis is tissue death in general, not specifically the detached, infected bone fragment.