Bone contusion

Bone (marrow) contusion (also known as bone bruising) is an osseous injury which may result from compression of bone structures.

Bone contusions represent trabecular microfractures with hemorrhage and without a discrete fracture line or contour abnormality 4. They typically appear within 48 hours of injury and can persist for up to six months 3.

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.

They can progress to osteochondritis dissecans 2

MRI is the modality of choice when investigating bone marrow. Bone (marrow) contusion is typically ill-defined with the following signal characteristics 4

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

rID: 32984
Synonyms or Alternate Spellings:
  • Trabecular microfractures
  • Trabecular microfracture
  • Bone bruising
  • Bone bruise
  • Bone marrow contusion
  • Bone marrow bruise
  • Bone contusions

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