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Osteitis

Last revised by Henry Knipe on 29 Mar 2022

Osteitis is an inflammation of the bone, usually in the context of inflammatory arthropathy.

Osteitis refers only to the inflammation of bony structures, in particular the cortex (non-medullary infection or infectious osteitis) 1-3. If there is infectious involvement of the medullary cavity, this is referred to as osteomyelitis 3.

  • T1
    • intermediate to low signal of cortical bone
    • normal signal of adjacent bone marrow
  • T2
    • intermediate to high signal of cortical bone
    • normal or high signal of adjacent bone marrow
  • T1 C+
    • post-contrast enhancement of cortical bone
    • no post-contrast enhancement of adjacent bone marrow

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