Bone contusion

Bone (marrow) contusion (bone bruising or bone marrow oedema) is an osseous injury which may result from compression of bone structures.

Bone contusions represent microfractures with haemorrhage and can progress to osteochondritis dissecans 2. They typically appear within 48 hours of injury and can persist for up to six months 3.

Aetiology

Most bone contusions are a result of a direct blow to the bone, traction from avulsion trauma or compression of adjacent bones 1,2.

Depending on where bone contusion is seen, the underlying trauma mechanism can be identified. Each trauma mechanism has its own pattern of bone contusion.

MRI

MRI is the modality of choice when investigating bone marrow. Bone (marrow) contusion can be seen as follows:

  • T1: hypointense area of bone marrow that is affected
  • T2: hyperintense area of bone marrow that is affected
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Article information

rID: 32984
Section: Pathology
Synonyms or Alternate Spellings:
  • Bone bruise
  • Bone marrow contusion
  • Bone marrow bruise
  • Bone marrow edema
  • Bone contusions

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