ABSTRACT
Avascular necrosis is a progressively devastating disease and primarily affects weight-bearing joints. The hip is the most commonly affected joint. In early stage, nonoperative (including pharmacologic intervention and biophysical treatments) and operative modalities for protecting hip joint have become the main therapeutic methods. However there is still no satisfied mothod with reasonable effect. According to the treatment of the avascular necrosis of the femoral head of the pre-collapse stage, core decompression with modification of technique is still one of the safest and most commonly employed procedures. Recently there have been attempts to enhance the effect of core decompression with use of various growth and differentiation factors. Which is the hot spot of current research. Early diagnosis is the key to the treatment of the avascular necrosis of the femoral head. Comprehensive treatment which is based on the core decompression is still the main treatment of today.