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Trabecular edema, also known as bone marrow edema (BME), is a traditional term describing the interstitial fluid accumulation at the trabecular bone marrow. The term was first used in 1988, [ 1 ] referring to the changes in the bone marrow due to inflammation . [ 3 ]
Bone marrow oedema is seen at the tendon insertion (short thin arrow). (b, c) T1 weighted images of a different section of the same patient, before (panel b) and after (panel c) intravenous contrast injection, confirm inflammation (large arrow) at the enthesis and reveal bone erosion at tendon insertion (short thin arrows).
Microfractures occur later and are accompanied by bone marrow edema, which can be detected on MRI. This stage appears on MRI as an isolated bone marrow edema pattern without a fracture line and is called stress reaction. Then, periosteal new bone forms and may be visible on radiography. Full cortical fractures occur if the repetitive stress ...
Since the disc is an avascular structure, it is an ideal environment for the growth of anaerobic bacteria. Propionibacterium acnes bacteria secrete propionic acid, which can dissolve fatty bone marrow and bone. Therefore, it was hypothesized that diffusion of propionic acid from the disc into the vertebrae results in bone oedema, i.e. Modic ...
A source of significant pain, bone marrow edema (or lesions, using newer terminology), can be detected on MRI or with ultrasonography by signals of excessive water in bone marrow. [11] Specifically, bone marrow edema can be detected within bone on T1-weighted images as poorly defined areas of low signal, with a high signal on T2-weighted fat ...
Eventually, subperiosteal bone formation may give a firm swelling. Trismus (difficulty opening the mouth), which may be present in some cases and is caused by edema in the muscles. Dysphagia (difficulty swallowing), which may be present in some cases and is caused by edema in the muscles. Cervical lymphadenitis (swelling of the lymph nodes in ...
The condition is usually characterized by a sudden onset of knee pain, worse at night, or during weight-bearing such as standing or running. Nevertheless, it can also occur during rest or without any weight-bearing. About 94% of the cases affect the medial condyle of the femur. This is because the blood supply for the medial condyle is less ...
Bone pain originates from both the periosteum and the bone marrow which relay nociceptive signals to the brain creating the sensation of pain. Bone tissue is innervated by both myelinated (A beta and A delta fiber) and unmyelinated sensory neurons. In combination, they can provide an initial burst of pain, initiated by the faster myelinated ...