Patients with deformational osteoarthritis often present with a variety of symptoms, as the site of onset may vary. All cases of osteomalacia are characterized by pain in the bones at the site of the disease and by deformation or malformation of the bones. For example, if osteomalacia occurs in the skull, the skull may increase in size from year to year; in the maxillofacial region, the face may look like that of a lion; in long tubular bones, such as the femur or lower leg tibia, the femur and tibia may become bent and deformed. There are also specific sites, such as deformational osteitis occurring in the maxillofacial region and the spine, that can present with symptoms of nerve compression. When it occurs in the maxillofacial region, it can cause symptoms of the facial nerve, 12 pairs of cerebral nerves, and even headache, and if the auditory nerve is involved, it can cause deafness. If a deformity osteitis occurs in the optic cone, it can cause atrophy of the optic nerve and eventually cause loss of vision. If osteochondritis occurs in the spine, it can lead to back and leg pain, leg weakness, and even thinning of the legs. It occurs around the joints and tends to lead to inflammation of the joints. It is important to note that if malignant osteitis is not treated properly, it can become malignant and change in nature, in most cases to osteosarcoma and fibrosarcoma. Therefore, after the occurrence of deformational osteitis, it is necessary to visit a department that deals with metabolic bone disease to prevent and control it as early as possible, so that it does not become malignant, and once it does, the limb will have to be amputated. In the long tubular bone amputation can be, in the head can only wait for the progressive development of life-threatening lesions. The manifestations of deformational osteitis in imaging are also more characteristic, such as the head, take an X-ray, you can observe like a cotton ball, thickening of the cranial plate; on the thighs you can see the thighs appear curved deformity, the bone cortex is irregular, insubstantial, and even fractures occur.