Femoral head necrosis, also known as ischemic necrosis of the femoral head or aseptic necrosis of the femoral head, is a disease caused by ischemia and osteoclastic necrosis of the femoral head, which results in changes in bone structure and mechanical function, causing pain and dysfunction of the hip joint. Femoral head necrosis progresses rapidly, and most patients experience femoral head collapse about 2 years after the occurrence of femoral head necrosis, so the disability rate of femoral head necrosis is high, which seriously reduces people’s quality of life. First, long-term use of hormones. According to the statistics of orthopedic department of Peking Union Medical College Hospital, hormonal femoral head necrosis accounts for 46.03% of all femoral head necrosis during the past 20 years, so this kind of femoral head necrosis is extremely common in the clinic. There are some patients suffering from immune diseases, such as systemic lupus erythematosus, rheumatoid, dry syndrome, etc. In some cases, hormones must be applied to control the disease. However, some friends blindly believe in the so-called “prescriptions” or “ancestral secret recipes” on the street, which may contain hormones, so they may be able to temporarily relieve the symptoms after using them, but the incorrect dosage and usage of hormones may lead to the problem of femoral head necrosis. Therefore, “hormones” are fiercer than tigers, so when you use hormones or hormone-containing drugs, you must apply them under the guidance of a doctor, and of course, you should not trust the so-called “prescriptions” or “secret recipes”. Ancestral secret recipes”. Second, long-term alcohol abuse. Alcoholic femoral head necrosis accounts for 15.4% of all femoral head necrosis in our hospitals, which is also a large proportion. Moderate drinking can promote blood circulation, can relieve mental tension, reduce stress-related diseases, especially cardiovascular disease, but if long-term, heavy alcohol abuse can be extremely harmful to our health, such as fatty liver, pancreatitis, memory loss, etc., and of course, we talk about today’s femoral head necrosis, alcohol leads to increased blood viscosity caused by bone microcirculatory disorders and necrosis of the femoral head Alcohol is a double-edged sword. Alcohol is a double-edged sword, we must grasp the “degree”, so for the sake of our health, we suggest that alcoholic friends better quit drinking, and we suggest that the total amount of liquor should not exceed 2 taels per day if there are really difficulties. Thirdly, hip trauma, the most common of which is femoral neck fracture. Fracture of the femoral neck can directly affect the local blood supply of the femoral head, thus leading to femoral head necrosis. Femoral head necrosis occurs in 1M3 of patients with femoral neck fracture. Patients with femoral neck fracture must go to a regular hospital for treatment in time, without delay, so as not to delay the best time for fracture repositioning. Especially for elderly people over 60 years old, if a fall occurs and there is discomfort in the hip, it is very necessary to go to a nearby hospital to take a hip film to avoid delaying the diagnosis and missing the best treatment window.