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| | eMedicine - Avascular Necrosis : Article by Jeanne K Tofferi, MD, MPH, FACP |
 | | AVN is associated with numerous conditions and usually involves the epiphysis of long bones, such as the femoral and humeral heads and the femoral condyles, but small bones can also be affected. |
 | | A Japanese survey estimated that 2500-3300 cases of AVN of the hip occur each year; of these, 34.7% were due to corticosteroid use, 21.8% to alcohol abuse, and 37.1% to idiopathic mechanisms. |
 | | Age: AVN is a disease of middle age that most often occurs during the fourth or fifth decade of life and is bilateral in 55% of cases. |
| www.emedicine.com /med/topic2924.htm (3881 words) |
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