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Definition of Avascular necrosis

Avascular necrosis: A condition in which poor blood supply to an area of bone leads to bone death. Abbreviated AVN. Also known as aseptic necrosis and osteonecrosis.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=2408
Last Editorial Review: 3/19/2012

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