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
1 An orange ribbon or orange-and-white ribbon is an awareness ribbon for Self Injury Awareness Day (SIAD) (March 1). 2  SIAD promotes awareness and support of those people who self-harm.3  They were formerly colored red, blue and black. 4  It is also worn to show support for 16 day of activism against gender based violence.t is currently being used in the #savecedric campaign to promote the continued unification of the westside region of a business in Northern Indiana. Many efforts are being made by local supporters to raise awareness of this cause. It was more recently used worldwide to promote awareness of self-harm on March 1, 2012.