Femoral head necrosis is a more common clinical hip disease, but the treatment is not yet very effective, especially the early stage of femoral head necrosis without obvious symptoms, once early detection of the disease is mostly in the middle and late stages, how to early detection of the disease is conducive to improve the cure rate of the disease. The earliest symptom of femoral head necrosis is soreness and sleepiness of the hip joint, sometimes with intermittent pain. This is the main symptom of the disease. Femoral head necrosis, as an independent disease, has its own peculiarities. If you have the following conditions, you should pay great attention to them and conduct self-examination from several aspects to determine whether you are suffering from osteonecrosis of the femoral head: (1) Hip pain radiating to the inguinal area or the posterior, lateral or medial side of the hip or knee. (2) Stiffness, weakness and limited movement of the hip joint, inflexibility in lifting the leg, early appearance of symptoms such as planking or outward skimming of the leg as well as difficulty in squatting. (3) Limping: the affected limb does not dare to put weight on it when walking, like walking on tiptoe. (4) After the fracture, dislocation or sprain of hip joint heals, intermittent or persistent pain in the hip appears gradually or suddenly. The pain is aggravated after walking activities, sometimes it is resting pain, and the pain is mostly pins and needles or soreness, and the above-mentioned reaction occurs. (5) Hip pain occurs in people who use a lot of hormones for a long time or for a short time or who often drink alcohol, and it is mostly vague or dull pain, often located in the groin, obvious when moving and relieved after rest. (6) Cold and damp: When the weather is cold, the hip joint becomes sore and painful, and the function is limited. If the above-mentioned conditions occur, it is possible to suffer from femoral head necrosis, which needs to be diagnosed in hospital.