What should I pay attention to in X-ray film of bone and joint?

Photography should pay attention to the following points:

① All parts, including the long bones of limbs, joints and spine, should be taken in a positive lateral position. Some parts should also use oblique position, tangent position and axial position.

② Surrounding soft tissues should be included. Photographs of long bones of limbs should include an adjacent joint. For example, when taking spinal photography, the lumbar vertebrae should include the lower thoracic vertebrae for counting;

③ Bilateral symmetrical bone and joint, if the lesion is on one side and the symptoms and signs are light, or the upper side of X-ray film has changed, but it is not obvious enough, the contralateral side should be photographed and compared under the same technical conditions.