Osteonecrosis 2023, also known as aseptic necrosis or avascular necrosis (AVN), is the loss of bone cells as a result of reduced blood supply. It may cause discomfort and bone collapse in certain locations. Degenerative arthritis, commonly known as osteoarthritis, of surrounding joints, most frequently the hips and knees, can result from this bone collapse. Shoulders, hands, and feet are areas that are less frequently impacted. Osteonecrosis can very rarely happen in the jaw. Gum tissue ulcers (sores), exposed jawbone, and pain may occur from this.