Femoral head necrosis is a particularly common orthopedic condition that causes pain and restriction of movement. It is also disabling if it reaches an advanced stage. Femoral head necrosis causes pain in the hip joint area, weakness in the lower extremities and fear of cold in the lower extremities. As the disease continues to progress, it can develop from intermittent pain to constant pain. Even when the patient is resting in bed, he or she will still have pain, and it will lead to uncomfortable symptoms such as inability to cross the legs and limp walking. This condition of osteonecrosis of the femoral head is on the area of the knee joint. If osteonecrosis of the femoral head occurs, it is recommended that the patient undergoes a relevant examination at the hospital to clarify the current stage of osteonecrosis of the femoral head and then give relevant treatment measures.