It may affect one bone, several bones at one time, or different bones at different times. Although avascular necrosis may affect both genders and all age groups, it most-commonly occurs to people in their 30s and 40s. Other theories and associations have been suggested as risk factors. A risk factor is anything that may increase a person's chance of developing a disease. It may be an activity, such as smoking, diet, family history, or many other things.
Different diseases have different risk factors.
Although these factors can increase a person's risk, they do not necessarily cause the disease. Some people with one or more risk factors never develop a disease, while others develop the disease and have no known risk factors. But, knowing your risk factors to any disease can help to guide you into the appropriate actions, including changing behaviors and being clinically monitored for the disease. The following are the most common symptoms for avascular necrosis. However, each individual may experience symptoms differently.