The internal fixation of lumbar spine surgery can never be removed unless the plate is fractured, loosened or dislodged, causing damage to the surrounding tissues and organs. Nowadays, the commonly used material for internal fixation of cervical spine is titanium alloy, and it is possible to do magnetic resonance examination. However, there are some hospitals where doctors recommend removing the internal fixation at a certain time after surgery according to the patient’s specific medical needs. Ultimately the removal of the internal fixation depends on the experience of the doctor, and the needs of the patient.