Avascular necrosis is actually the death of the bone tissue due to a blood supply lacking. Also referred to as osteonecrosis, it may result in tiny breaks in the bone and the bone's eventual collapse. A broken bone or dislocated joint could be an interruption for the blood flow for a particular section of bone. AVN (Avascular Necrosis) can also be associated with long-term utilization of high-dose steroid medications and excess alcohol intake. Anyone could be affected, but the condition is most prevalent in people between the ages of 30 and 50. www.rahmanutra.com