The pathogenesis of femoral head necrosis is not yet uniformly understood, and there are various theories, which can generally be divided into two categories: traumatic and non-traumatic, such as femoral neck fracture, hip dislocation, hip trauma, etc., which can directly or indirectly damage the blood flow of the femoral head, thus leading to ischemic necrosis of the femoral head; non-traumatic is triggered by more factors, and most of the diseases and their pathogenesis are still uncertain, these common These common predisposing factors are: heavy hormone application, long-term alcohol abuse, kidney transplantation, chronic liver disease, diving disease, sickle cell anemia, pancreatitis, hyperlipidemia, gout, radiation disease, arteriosclerosis and other vascular stenosis disorders, collagen diseases, etc. Femoral head necrosis can seriously affect the quality of life of patients, causing joint pain in mild cases and seriously affecting the function of the hip joint in severe cases. Patients should understand the causes of femoral head necrosis and the current treatment trends, and not blindly believe in the exaggerated propaganda of some media to avoid wasting energy and money on treatment. At present, there are many propaganda pointed out that femoral head necrosis can be carried out interventional therapy, mainly is the injection of drugs into the patient’s arterial blood vessels, expecting the dissolution of embolism through drugs to achieve curative effect; there are also some about stem cell therapy through direct or indirect methods, theoretically acting femoral head lesions to play a role. First of all, such methods in China are limited to a small number of research institutions, and these theories have not been verified by a large number of clinical results. The research on stem cells is mostly theoretical, and there are a lot of hidden dangers in the clinical application of blind stem cells. As technology advances, there may be a breakthrough in the treatment of femoral head necrosis and other areas, but it is far from being carried out on a large clinical scale. For patients with no positive changes on plain X-rays and necrosis on MRI, the best treatment at present is to choose borehole decompression, which is currently supported by a large amount of domestic and international literature and has no side effects on the patient’s body. Some people refer to osteonecrosis as intraosseous hypertension, which led to the introduction of drill hole decompression therapy. Especially with the development of minimally invasive technology, arthroscopic hip joint cleaning plus small bore size multi-orifice medullary core decompression has achieved good clinical results. Of course, there are still certain patients whose condition will progress. cystic degeneration will appear on the x-ray, especially in the weight-bearing area, and in the past, patients were mostly treated with vascularized musculoskeletal flap transplantation, which mainly involves cutting the muscle and bone flap attached to the vascular bundle near the hip joint and then implanting it into the necrotic area. This procedure used to be widely accepted by doctors in China, but in recent years, the role of multiple musculoskeletal flaps in improving the blood supply to the necrotic area of the femoral head has been controversial in the foreign literature. In particular, such surgery is more invasive, and the incision scar left by the surgery can affect future surgeries in case of inaccurate improvement of blood flow. With the increased awareness of femoral head necrosis, the role played by early minimally invasive surgery has become more and more obvious. In addition, the technology of hip replacement surgery is becoming more and more perfect, and when the femoral head is collapsed and the function of the hip joint is severely limited, hip replacement becomes the indisputable choice.