Medically Reviewed by Dr Wang Lushun What exactly is Avascular Necrosis (AVN)? Avascular necrosis, often known as osteonecrosis, happens if the blood source to bone cells is disrupted, bringing about the death of bone tissue. It generally targets the hip joint, specially 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