Medically Reviewed by Dr Wang Lushun What on earth is Avascular Necrosis (AVN)? Avascular necrosis, also called osteonecrosis, occurs once the blood source to bone cells is disrupted, bringing about the death of bone tissue. It normally targets the hip joint, significantly the femoral head–the higher “ball” portion of the https://www.theorthopaedicandpainpractice.com/what-is-avascular-necrosis-of-the-hip/?_gl=1*xbbxlb*_up*MQ..&gclid=Cj0KCQjwkt6aBhDKARIsAAyeLJ2krYJSOuy5mZksrNqH-VDjQwW1ScD49yD8BUWysDG6u6bJPCSbXVUaAuCPEALw_wcB