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Center for Hip Preservation

Avascular Necrosis - Hip Conditions

Avascular necrosis (AVN), also known as osteonecrosis of the hip, is a condition that results from a significant loss of blood supply to an area of the femoral head, the top of the thighbone where it fits in the hip socket. This disabling condition can lead to collapse of the femoral head and loss of joint congruity. Without blood, the head of the femur dies and collapses, making hip movement painful and may lead to rapid progression of hip joint arthritis.