Bone cortex roughness from the word go, is the relevant examination, suspected that the place appeared the possibility of fracture, especially in the case of obvious external force injury, at this time the doctor recommended further CT examination and MRI examination to further clarify. If there is no obvious external injury, it is possible that the fracture is related to the accumulation of exertion and strain, or more commonly, osteochondritis, which is formed by prolonged stimulation, provided that there is chronic pain in the area, or even a severe fatigue fracture. In addition, tumor lesions may also produce this condition, but this is accompanied by a change in bone density or a low density shadow in the bone marrow cavity, which is not just a rough bone cortex, but also accompanied by other symptoms.