Sclerosing osteomyelitis is generally considered to be a hypotoxic infection of the published bone tissue with a strong osteogenic reaction, but it is also thought to be a multiple small abscesses within the bone tissue at the same time with high tension; the disease occurs mostly in the long tubular bone trunk, with the tibia as the preferred site. The common symptoms of sclerosing osteomyelitis include periosteal reaction, osteosclerosis, bone destruction, and depression of the brow arch. Clinical examination: 1. White blood cells may be elevated in acute attacks, and the erythrocyte sedimentation rate may be increased. The X-ray film shows a localized thickening of the bone stem and increased bone density. Because the X-ray film shows a large dense white shadow, it is difficult to see the narrow bone marrow cavity and small translucent area, or presents an irregular bone density reduction area. Ancillary tests: 1. Blood and bone marrow bacterial culture When local infection spreads to the whole body and systemic infection occurs, bacteria can appear in the blood and bone marrow, i.e. bacteraemia, toxemia or sepsis. Blood and bone marrow bacterial cultures can be performed when the patient has clinical fever, infected blood and symptoms. Blood and bone marrow bacterial cultures are used to detect microorganisms in the blood of patients with bacteremia, fungemia, and most bacteremia is intermittent and requires multiple cultures to confirm. Blood and bone marrow bacterial culture commonly used traditional broth bacteriological method, automatic blood culture instrument detection method. 2.Blood test is to detect and analyze the quantity and quality of the three systems of the blood, namely red blood cells, white blood cells and platelets. These three systems and plasma make up the blood, which is constantly flowing in the body’s circulatory system, participating in the body’s metabolism and every functional activity, so the blood plays an important role in ensuring the body’s metabolism, functional regulation and the balance of the body’s internal and external environment. 3.Bone and joint radiographs of the extremities Bone and joint radiographs of the extremities are taken of the extremities and related joints to confirm the bone condition after fracture. Follow the doctor’s instructions for the examination. There is no need to panic about X-rays. The patient should be exposed to a safe amount of 100 roentgens or less during the X-ray examination, and the permissible number of exposures and time should be worked out according to this exposure. 4.Bone and joint MRI examination Bone and joint MRI examination is the use of MRI to scan the bone and joint to observe the condition of the bone and to confirm the diagnosis of related diseases. For the hip and shoulder joints, coronal and cross-sectional T1WI and T2WI are routinely taken. The hip joint should be imaged symmetrically on both sides, and the sagittal plane should be added if necessary. The knee joint, upper arm and lower leg were routinely imaged in coronal and sagittal planes for T1WI and T2WI, paying attention to parallelism with the limb as much as possible, and adding cross-sectional scan if necessary.