Patients with advanced osteonecrosis of the femoral head are able to walk, but the pain is severe and generally intolerable. Advanced osteonecrosis of the femoral head is due to bone collapse, cartilage destruction and the presence of a large amount of inflammatory factors around the femoral head resulting in pain that becomes more pronounced after the patient walks and is stimulated by external forces and friction. Femoral head necrosis does not lead to paralysis and the patient can walk, but the patient will have pain when walking. The pain will cause the patient to walk with a limp, and in layman’s terms, the patient with osteonecrosis is a bit of a cripple in the late stages.