Avascular Necrosis (Aseptic Necrosis) of the hip represents a condition where the hip has at least temporarily lost the critical blood supply to the ball part (femoral head) of the hip. This can cause a condition where the bone begins to collapse at this weakened site and then arthritis can begin. Expert

Avascular necrosis (AVN), better known as osteonecrosis, of the femoral head, is "a disease that causes death of bone." Expert

n overview of osteonecrosis including prevention, symptoms, diagnosis and surgical,non-surgical treatments. Sponsored by the Johns Hopkins University.

AAOS Online Service Fact SheetBursitis of the hip Highly Reputable

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AAOS Online Service Fact SheetHamstring muscle strain Highly Reputable

National Osteonecrosis Foundation

AAOS Online Service Fact SheetOsteonecrosis of the hip Highly Reputable