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 necrosis of bone cells in the femoral head, resulting in changes in bone structure and mechanical function, leading to pain and dysfunction of the hip joint. Femoral head necrosis progresses rapidly, and most patients suffer from femoral head collapse within 2 years after the occurrence of femoral head necrosis, resulting in a high disability rate, which seriously reduces people’s quality of life. The causes of femoral head necrosis are diverse (about 60 kinds) and complex, and it is difficult to classify them in a comprehensive and systematic way, which is related to the unclear pathogenesis. Among the factors, local trauma, hormone drug abuse and excessive alcohol consumption cause femoral head necrosis. 1, trauma causes femoral head necrosis, femoral neck fracture is the most common, such as external impact caused by femoral neck fracture, hip dislocation, hip joint sprain and contusion. Trauma is the main factor causing femoral head necrosis. However, the occurrence and extent of traumatic femoral head ischemic necrosis mainly depend on the degree of vascular destruction and the compensatory ability of collateral circulation. According to statistics, 1M3 of patients with femoral neck fracture have femoral head necrosis. 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 the elderly 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 so as not to delay the diagnosis and miss the best treatment window. 2, drugs lead to femoral head necrosis, mainly long-term use of hormones Such as long-term use of hormonal drugs due to bronchitis, asthma, rheumatism, rheumatoid, neck, shoulder, back and leg pain, diabetes, skin disorders, etc.. This is one of the early statements that the accumulation of hormones in the organism is caused by the large amount or long-term use of hormones. Recently, it is believed that the occurrence of femoral head necrosis is directly related to the type, dosage form and route of administration of hormones, and is not directly proportional to the total amount and duration of hormones. However, the long-term use of large amounts of hormones or excessive daily doses and sudden changes in dose increases and decreases are also one of the reasons for the occurrence of femoral head necrosis. 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 recipe”. 3, alcohol stimulation leads to femoral head necrosis due to long-term heavy drinking and the accumulation of alcohol in the body, resulting in increased blood lipids and liver function damage. Elevated blood lipids, resulting in increased blood viscosity, blood flow slows down, so that blood coagulation changes, and thus can make the blood vessels blocked, bleeding or fat embolism, resulting in osteonecrosis. Clinical manifestations include aggravation after drinking, walking duck walk, heart failure, weakness, abdominal pain, nausea and vomiting. Alcoholic osteonecrosis of the femoral head accounts for about 20% of all osteonecrosis of the femoral head in hospitals, which is a very high proportion, so for the sake of your health, it is recommended 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.