Bone contusion
Bone (marrow) contusion (also known as bone bruising) is an osseous injury which may result from compression of bone structures.
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Pathology
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.
Etiology
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.
Complications
They can progress to osteochondritis dissecans 2.
Radiographic features
MRI
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
See also
Related Radiopaedia articles
Fractures
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fracture
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- fracture location
- diaphyseal fracture
- metaphyseal fracture
- physeal fracture
- epiphyseal fracture
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- avulsion fracture
- articular surface injuries
- complete fracture
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- pathological fracture
- stress fracture
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facial fractures
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spinal fractures
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cervical spine fracture classification systems
- AO classification of upper cervical injuries
- AO classification of subaxial injuries
- Anderson and D'Alonzo classification (odontoid fracture)
- Levine and Edwards classification (hangman fracture)
- Roy-Camille classification (odontoid process fracture )
- Allen and Ferguson classification (subaxial spine injuries)
- thoracolumbar spinal fracture classification systems
- three column concept of spinal fractures (Denis classification)
- classification of sacral fractures
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cervical spine fracture classification systems
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upper limb fractures
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- Milch classification (lateral humeral condyle fracture)
- Weiss classification (lateral humeral condyle fracture)
- Bado classification of Monteggia fracture-dislocations (radius-ulna)
- Mason classification (radial head fracture)
- Frykman classification (distal radial fracture)
- Mayo classification (scaphoid fracture)
- Hintermann classification (gamekeeper's thumb)
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carpal bones
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- pelvis
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- Johansson classification (periprosthetic hip fracture)
- Vancouver classification (periprosthetic hip fracture)
- femoral
- knee
- Schatzker classification (tibial plateau fracture)
- Meyers and McKeevers classification (anterior cruciate ligament avulsion fracture)
- tibia/fibula
- Watson-Jones classification (tibial tuberosity avulsion fracture)
- ankle
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- Berndt and Harty classification (osteochondral lesions of the talus)
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hip
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- anterior cruciate ligament avulsion fracture
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