Avascular necrosis causes ischemic structural damage in the femoral head which leads to progressive degenerative joint disease. Early diagnosis before the joint cartilage collapse is important for preserving the normal joint function. For this purpose, magnetic resonance imaging is the most common and gold standard diagnostic method used in the diagnosis of early stage disease. However, other imaging methods are used in planning the treatment of the disease, determining its prognosis and following up. In this article, radiological imaging features of the disease are discussed through avascular necrosis of the femoral head, which is the most common localization.