Femoral head necrosis is now recognized as a high incidence, that common causes and prevention you know which? First, we will explain to you one by one: 1. Femoral head necrosis occurs in young adults, more men than women. According to reports, femoral head necrosis is recognized as a difficult disease, most patients in the hip pain at the same time, will gradually lose joint movement and walking function, and finally lose the ability to work and live. The annual number of new cases of femoral head necrosis in China is between 150,000 and 200,000. Ischemic necrosis of the femoral head can occur at any age, and children and adults are susceptible to the disease, but clinical observation shows that the incidence is highest between the ages of 30 and 65, with more men than women. The femoral head is an important part of the body for weight-bearing and movement, supporting the weight of the entire trunk. If the blood supply to the femoral head is low and the blood vessels are weak, when one blood vessel is blocked and other blood vessels cannot compensate in time, it will cause the impaired blood supply to the femoral head, thus causing ischemia, bone resorption, destruction and collapse of the femoral head. 2, Fracture, hormone treatment, alcoholism, diabetes and other causes can injure the femoral head. There are many causes of femoral head necrosis, which are summarized into traumatic and non-traumatic. Traumatic include femoral neck fracture, hip dislocation or acetabular fracture, long-term chronic cumulative injury of hip joint, etc. Non-traumatic include: pharmacogenic femoral head necrosis, such as hormone therapy; alcoholic femoral head necrosis, caused by long-term heavy drinking and alcoholism; some diseases can also be combined with femoral head necrosis, such as: ankylosing spondylitis, connective tissue disease, leukemia, diabetes, sickle cell disease, Cushing’s disease, mucopolysaccharidosis, decompression disease, lupus erythematosus, etc.; in addition, congenital dysplasia of the hip joint, intraosseous stress and changes in external bone stress, can also lead to femoral head necrosis. For the existence of the above causative high-risk groups, once the joint has uncomfortable feeling, must go to the regular hospital for further examination and diagnosis, by the doctor to make a clear diagnosis and analysis, and then choose a reasonable, scientific and effective treatment plan. 3, the early stage of femoral head necrosis is easily misdiagnosed as knee arthritis or joint injury. Early stage of femoral head necrosis can have no obvious clinical symptoms, or only vague pain, dull pain and aggravation of symptoms after activity in the hip joint and its surrounding tissues as well as the inner thigh and groin. Special attention should be paid to the fact that femoral head necrosis sometimes manifests itself as pain in the affected knee and lateral thigh, namely “hip disease knee pain, also known as ectopic pain, which is often overlooked because it is far from the hip joint and easily misdiagnosed as knee arthritis or joint injury, and is actually a kind of radiating pain caused by femoral head necrosis. Early stage femoral head necrosis is easily misdiagnosed. When early symptoms appear, do not delay the condition by taking it lightly, causing further deterioration and lifelong disability. There are two main types of treatment for ischemic necrosis of the femoral head: conservative treatment and surgical treatment. The patient’s condition can be treated conservatively within the first and second stage. The most fundamental method is that the affected side cannot bear weight and can support crutches or use a walker to reduce the pressure of the body on the hip joint. If both hips are involved at the same time, the patient should be bedridden or in a wheelchair. Hyperbaric oxygen, physiotherapy and Chinese medicine can also be used to improve local blood circulation, all of which have certain effects. Treatment takes 6-24 months, and should be reviewed regularly during treatment until the lesion is completely healed before weight holding. At the third stage, conservative treatment is no longer possible and surgical treatment should be taken. 4, the femoral head must be prevented before the disease, not to drink alcohol and hormone abuse, to prevent bone damage The viewpoint of prevention and early treatment of femoral head necrosis should be adopted before the disease: First, do not drink alcohol and hormone abuse, hormone is an important cause of femoral head necrosis, the mechanism may be hormones cause fat metabolism disorder, bone microvascular is fat embolism, making bone blood supply reduced, causing femoral head necrosis; long-term excessive After drinking alcohol, there will be elevated free lipoic acid in the blood, which is able to occur intraosseous vascular embolism and finally lead to osteonecrosis. Secondly, for patients who drink more alcohol or have used hormonal drugs, they should be highly alert to the occurrence of femoral head necrosis and have regular checkups with a view to early detection and treatment. For traumatic diseases involving the femoral head, measures should be taken to reduce further destruction of the blood supply to the femoral head as much as possible, and measures should be taken to protect or reconstruct the blood supply to the femoral head if necessary. In addition, deep-water divers, high-altitude pilots, and people working in high-pressure environments should pay attention to labor protection and improve working conditions, and those who are already ill should change their job type and seek timely medical attention.