Posterior Spinal Fixation Using a Patient-Specific 3D-Printed Guide for a Sixth Thoracic Vertebral Fracture With Ankylosis and Severe Bone Sclerosis Due to Spondyloepiphyseal Dysplasia Congenita.

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.