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.
1 For fallen police officers. 2  In the US, a blue ribbon is a symbol for remembrance for fallen members of local police services. 3  The ribbons are displayed by the survivors of fallen police officers and are very symbolic of the COPS organization, Concerns Of Police Survivors. A blue ribbon is also the ribbon used for awareness for the disease of neurofibromatosis. 2  A blue ribbon is also the ribbon used for awareness for the autoimmune disease of Sjoegren'sjÃ¶gren s. 3  Syndrome-anti smoke.  campaigns
Meaning: The lace awareness ribbon is a symbol for osteoporosis. Meaning: The pink and blue awareness ribbon is a symbol for miscarriage, stillbirth, and infant death due to SIDS or other causes. Meaning: The purple and blue awareness ribbon is a symbol for pediatric strokes. Meaning: The prism awareness ribbon is a symbol for multiple sclerosis. Meaning: The flag awareness ribbon is a symbol for both the victims and heros of the 9/11 attacks. It is also a symbol of patriotism and support of our troops.