Medically Reviewed by Dr Wang Lushun What on earth is Avascular Necrosis (AVN)? Avascular necrosis, often known as osteonecrosis, happens in the event the blood offer to bone cells is disrupted, bringing about the death of bone tissue. It commonly targets the hip joint, particularly the femoral head–the upper “ball” https://www.theorthopaedicandpainpractice.com/what-is-avascular-necrosis-of-the-hip/?_gl=1*xbbxlb*_up*MQ..&gclid=Cj0KCQjwkt6aBhDKARIsAAyeLJ2krYJSOuy5mZksrNqH-VDjQwW1ScD49yD8BUWysDG6u6bJPCSbXVUaAuCPEALw_wcB