There are many reasons for patients to have pain in the left femoral head, such as long-term chronic weight-bearing activities in the left hip, or long-term application of hormonal drugs and long-term alcohol consumption, which can lead to aseptic necrosis of the left femoral head, resulting in pain and swelling of the left femoral head and affecting the left hip joint activities, and also affecting the weight-bearing activities of the left lower limb. A clear diagnosis can be made by taking a CT film of the left hip. After the patient’s left hip is subjected to direct external force, the fracture of the left femoral head is also likely to occur, and the patient will experience pin-stick-like pain in the left femoral head, and can have positive local pressure pain, bone rubbing sound, abnormal activity and other clinical manifestations.