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 of the femoral head and osteoclastic necrosis, which results in changes in bone structure and mechanical function, causing hip pain and functional impairment. 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. The causes of femoral head necrosis are various, but the most important and common are the following three major causes: 1. long-term use of hormones. According to the orthopedic statistics of a hospital, hormonal femoral head necrosis accounted for 46.03% of all femoral head necrosis during the past 20 years, so this type 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 and may temporarily relieve the symptoms after use, but the incorrect dosage and usage of hormones lead to femoral head necrosis. Therefore, “hormone” is fiercer than a tiger! When you use hormones or hormone-containing drugs, you must apply them under the guidance of a doctor, and of course, you should not believe in the so-called “prescriptions” or “ancestral secret recipes”. 2, long-term alcohol abuse. Alcoholic femoral head necrosis accounts for 15.4% of all femoral head necrosis in Peking Union Medical College Hospital, which is also a large proportion. Moderate drinking can promote blood circulation, can relieve mental tension, reduce stress-related diseases, especially the occurrence of 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 microcirculation disorders and cause femoral head The alcohol leads to increased blood viscosity, resulting in impaired bone microcirculation and femoral head necrosis. Alcohol is a double-edged sword, we must grasp the “degree”, for the sake of our health, it is recommended that alcoholic friends better quit drinking, it is really difficult to suggest that the total amount of liquor consumption should not exceed 2 taels per day. 3, hip trauma, of which femoral neck fracture is the most common. 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 have a hip radiograph so as not to delay the diagnosis and miss the best treatment window.