What causes AVN of the hip?
AVN of the hip can be caused by an injury that damages the hip joint. Most causes of AVN, however, are not related to trauma. For example, some patients who are treated with steroids (e.g., prednisone) can develop AVN of the hip. Others who drink excessive amounts of alcohol are at increased risk for developing AVN of the hip. Certain medical conditions such as sickle cell disease or systemic lupus erythematosus are also associated with AVN of the hip. In some cases, there are patients who develop AVN of the hip and no one knows why.
