There are no special signs of necrosis of the femoral head, and there may be symptoms such as pain in the hip joint, limitation of hip movement, and limping. 1. Pain: Due to localized necrosis of the femoral head, it may cause discomfort in the hip joint. Sometimes the pain is limited to the groin and also occurs around the knees and hips. 2. Limping: Some patients suffer from severe swelling of the joints around the femoral head or collapse of the femoral head due to necrosis of the femoral head, which may lead to limping due to the length of the leg. 3. Restricted movement: the destruction of the joint and the surrounding soft tissues will also be damaged, resulting in restricted hip joint activities, unable to normal abduction and internal rotation, causing difficulties in life. When the above symptoms occur, it is recommended to consult a doctor in time, follow the doctor’s instructions for relevant examinations, clarify the cause with the help of the doctor, and carry out targeted treatment or therapy.