Abstract: Osteonecrosis of the femoral head (ONFH), also known as femoral head avascular necrosis, is a pathological state due to different etiologies, including steroid administration, alcohol abuse, traumatic events, vascular injury and idiopathic origins. ONFH reduces the blood supply of the subchondral bone of the femoral head, which results in osteocyte death and the collapse of the articular surface. Once the collapse happens, the majority of patients inevitably need total hip replacement. But hip replacement surgery is not the best choice for each patient. Expect for the joint prosthesis factors, the patient's age and disease characteristics may result in several renovations. So more and more scholars suggest that we would better reserve the femoral head. Currently, such surgerys include osteotomy, core decompression, bone graft surgery, tantalum rods surgery, stem cell therapy, etc. The aim of the present review is to summarize the hip-reserving surgerys for ONFH by different mechanisms from a new perspective.

Key words: Osteonecrosis of the femoral head, Hip-reserving, Surgerys, Progress