Avascular Necrosis (AVN), also known as osteonecrosis, is a serious condition that occurs when the blood supply to a bone is disrupted. This lack of blood flow can lead to bone death, and if left untreated, the bone may collapse, causing damage to the joint and severe arthritis.https://www.mayurahospitals.com/diseases/orthopedics/avascular-necrosis-avn/ What is Avascular Necrosis? ... https://www.mayurahospitals.com/diseases/orthopedics/avascular-necrosis-avn/