Avascular necrosis of the bilateral femoral head with pregnancy: A case report.

Osteonecrosis or avascular necrosis of the femoral head is a pathologic process due to inadequate blood supply resulting the death of the cells in bone tissue and collaps of joint. Avascular necrosis is a progressive disease mainly affecting adults in middle age and leads substantial loss of joint function. Osteonecrosis of the femoral head during or just after pregnancy is a rare clinical entity. Therefore several causes of osteonecrosis schould be well-known, little is known about pregnancy as an etiological factor for femoral head. We present a case of a 30-year-old female with bilateral avascular necrosis of the femoral head that developed during the peripartum period.