When a patient has a skeletal lesion, a radiograph is needed to determine what kind of lesion the patient has. If a patient has a fracture due to an external force, an x-ray should be taken. The x-ray will show the extent of the fracture damage, such as displacement of the fracture end, angulation and rotation of the fracture end, and other deformities. The doctor can take the correct symptomatic treatment according to the specific injury through the X-ray. If a patient has osteomyelitis, X-rays and CT films can be taken to see the specific osteomyelitis lesion before taking the correct treatment. If a patient has a fracture and also has a nerve or blood vessel injury around the fracture, MRI films can be taken to determine the extent of the nerve or blood vessel injury and then treatment can be taken. Therefore, patients with bone lesions should be seen in a timely manner, and the doctor will choose different films according to the specific condition.