Abstract
Vertebral fractures with ankylosing spinal disorder (ASD) are often painful due to the high level of instability and can lead to false joints and delayed paralysis; therefore, surgery is often required. Fixation using percutaneous pedicle screw (PPS) allows for minimally invasive fixation of the spine and is considered useful for ASD cases, but there is a risk of nerve damage during surgery and implant-related complications. Using a patient-specific 3D-printed guide, we were able to perform posterior spinal fixation without intraoperative complications in a patient with vertebral fractures with ASD, which was considered difficult to fix with PPS due to the person's past surgical experience.