Avascular necrosis (AVN), also known as osteonecrosis, is a disease that results in death of bone. This bone death occurs in a part of the femoral head (the ball at the top of the thigh bone that sits in your hip socket).
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Avascular necrosis (AVN), also known as osteonecrosis, is a disease that results in death of bone. This bone death occurs in a part of the femoral head (the ball at the top of the thigh bone that sits in your hip socket).