Identify typical patterns of bone marrow edema that result from different mechanisms of traumatic knee injury Explain how each mechanism leads to a specific pattern of bone contusion Recognize the specific soft-tissue injuries associated with each mechanism
Bone marrow edema (BME) is commonly identified at Magnetic Resonance Imaging (MRI) after knee injury.
These bone abnormalities may result from a direct blow to the bone,
from compressive forces of adjacent bones impacting one another,
or from traction forces that occur during an avulsion injury.
The distribution of bone contusion is a footprint left behind an injury,
providing important clues to the associated soft-tissue injuries.
Imaging findings OR Procedure Details
Bone bruises are focal abnormalities in subchondral bone marrow due to trabecular microfractures as a result from a traumatic force.
 They can be due to a direct blow to the bone,
application of compressive forces on contiguous bones with a consequent impact mechanism and the action of torsion force,
or traction forces that occur during an avulsion injury.
[2,3] MRI is better than conventional radiographs,
computed tomography and also arthroscopy to describe bone bruises and...
Bone marrow contusions are often regarded as benign and self-limiting lesions,
in most cases resolving 4 to 12 months after injury.
when they are associated with subchondral or osteochondral injuries,
they may have deleterious effects producing late degenerative changes.
Therefore it is important to accurately detect underlying soft-tissue injuries which may predict long-term degenerative changes. MRI is a very sensitive imaging technique to detect bone marrow pathology. It is very...
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Vol-10(4): TC06-TC11 Sanders T.
Bone Contusion Patterns of the Knee at MR Imaging: Footprint of the Mechanism of Injury.
RadioGraphics 2000; 20:S135–S151 Murphy BJ et al.
Ana Luísa Martins Lourenço Centro Hospitalar Universitário de Lisboa Central email@example.com