RT Journal Article SR Electronic T1 Usefulness of dynamic stabilisation with mobile percutaneous pedicle screw for thoracic vertebral fractures in diffuse idiopathic skeletal hyperostosis JF BMJ Case Reports JO BMJ Case Reports FD BMJ Publishing Group Ltd SP e242042 DO 10.1136/bcr-2021-242042 VO 14 IS 4 A1 Yawara Eguchi A1 Munetaka Suzuki A1 Sumihisa Orita A1 Seiji Ohtori YR 2021 UL http://casereports.bmj.com/content/14/4/e242042.abstract AB We report a case of vertebral fracture with diffuse idiopathic skeletal hyperostosis (DISH) who underwent posterior dynamic stabilisation using mobile percutaneous pedicle screws (PPS) with 1 above-1 below and obtained good bone fusion. A 76-year-old man experienced severe low back pain after he fell backward 1 m off a stepladder during work. A 12th thoracic vertebral fracture with DISH was observed. As the fractured part was unstable due to a three-column injury, and the conservative treatment of resting was not successful, posterior dynamic stabilisation with a mobile PPS between T11–L1 was performed the 38th day after injury. Immediately after surgery, a fracture gap was observed, but 5 months later, vertebral body height was shortened by about 4 mm, and good bone fusion was observed without loosening of the screw. The mobile PPS flexibly adapts to spinal plasticity and may be useful for bone union in vertebral fractures associated with DISH.