Avascular means blood flow loss and necrosis indicate cell death or tissue death. When a bone dies because of a lack of blood supply, avascular necrosis or osteonecrosis is identified. Often known are the following names – aseptic necrosis, bone ischemic necrosis, and bone infarction.
This disease is very common in persons of age between 30 and 60 years. Sometimes it also affects the children, commonly those who are on cancer therapy. AVN can affect the hip, shoulder, wrist, ankle, etc. Femoral head of hip joint most commonly affected.
The interruption of supply of blood to the joint of the hip leads to the damage or bone cell death of femur head (thigh bone). Bone collapse or bone damage is because of ignorance or delay in getting the treatment.
A non-supply of blood to the bone is the most common cause of avascular necrosis.
Following are some more causes: