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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]
All these entities may present with a pattern of bone marrow edema characterized by decreased signal intensity on T1 weighted images and increased signal intensity on fluid sensitive sequences, such as fat saturated T2-weighted or STIR images. When there is no evidence of a focal lesion associated with the edema pattern, TOH is suspected.
However, MRI is preferred since scintigraphy lacks specificity. In case of isolated bone marrow edema in MRI without a fracture line, the diagnosis of fatigue fracture may be more complicated, and other conditions such as transient edema and osteoid osteoma need to be excluded. Additional imaging by CT is warranted in such cases. [1]
Normally, bone continuously breaks down and rebuilds—old bone is resorbed and replaced with new bone. The process keeps the skeleton strong and helps it to maintain a balance of minerals. [23] In the course of avascular necrosis, however, the healing process is usually ineffective and the bone tissues break down faster than the body can ...
Bone marrow is a semi-solid tissue found within the spongy (also known as cancellous) portions of bones. [2] In birds and mammals, bone marrow is the primary site of new blood cell production (or haematopoiesis). [3] It is composed of hematopoietic cells, marrow adipose tissue, and supportive stromal cells.
Magnetic resonance imaging combines the diagnostic advantages of CT and ultrasound, also shows bone marrow edema, and has the advantages of not being operator dependent (unlike US), nor using radiation (such as CT and X-rays). As such, MRI is the modality of choice for evaluation, diagnosis, and treatment planning.
Normal bone contains internal scaffolding, called trabeculae. Red bone marrow , which produces blood cells , is located in the hollows between the trabeculae. Modic changes Type 1 reflects oedema adjacent to the disc, fissured endplates, microfractures of the trabeculae, granular tissue, high levels of immunoreactive nerve fibers, and TNF alpha ...
Acute exacerbation of juvenile idiopathic arthritis and transient synovitis of the hip both of which are non-septic conditions may mimic septic arthritis. More serious and life-threatening disorders as bone malignancies e.g. Ewing sarcoma and osteosarcoma may mimic septic arthritis associated with concurrent acute hematogenous osteomyelitis.