Blood supply to is interrupted, leading to cell death, of bone structures, bone destruction, pain and loss of joint function. Commonly involves the epiphysis of long bones, e.g. femoral and humeral heads and femoral condyles. Associated with corticosteroids and has diminished with the reduced use of steroids for immunosuppression.
Tofferi, J.K. (2015). Avascular necrosis. Medscape. Retrieved from: http://emedicine.medscape.com/article/333364-overview#showall