wprager
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Number of posts : 52870
Age : 63
Location : Kanata
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Registration date : 2008-08-05
Not every bruise is a microfracture. The two are not equivalent.
http://www.tsaog.com/connect-learn-interact/blog/2013/03/06/dr-marvin-brown-on-why-bone-bruise-is-a-misnomer/
The term bone bruise is a misnomer and makes the injury seem less serious than it is. A so-called bone bruise is actually a fracturing of the inner layer of bone.
Bones are composed of 2 different types of bony tissue, the compact (cortical) bone and the cancellous (spongy) bone.
* The compact bone is the outer layer of bone and is highly organized, solid, and extremely strong. When you injure this layer of the bone, it is referred to as a stress reaction or an occult fracture.
* The cancellous bone is the innermost layer of bone. Unlike the outer layer of bone, it is not arranged in concentric layers, but in plates (called trabeculae) which form an irregular meshwork that is neither as organized nor as strong as the outer bone. An injury to this area of the bone represents very small fractures to the trabeculae in the meshwork of the bone and may be referred to as a bone bruise.
When they equate a microfracture to a bruise they are talking about a bone bruise. The common definition of a "bruise" is
a type of hematoma of tissue in which capillaries and sometimes venules are damaged by trauma, allowing blood to seep, hemorrhage, or extravasate into the surrounding interstitial tissues.
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