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What is avascular necrosis? Avascular necrosis is a disease that results from the temporary or permanent loss of blood supply to the bone. When blood supply is cut off, the bone tissue dies and the bone collapses. If avascular necrosis happens near a joint, the joint surface may collapse. This condition may happen in any bone.
To: dphillips50, Avascular necrosis is a disease resulting from the temporary or permanent loss of the blood supply to the bones. Without blood, the bone tissue dies and causes the bone to collapse.If the process involves the bones near a joint, it often leads to collapse of the joint surface.This disease also is known as osteonecrosis, aseptic (bone) necrosis, and ischemic bone necrosis.o: dphillips50, Avascular necrosis is a disease resulting from the temporary or permanent loss of the blood supply to the bones. Without blood, the bone tissue dies and causes the bone to collapse.