Abstract: To evaluate the efficacy and safety of minimally invasive percutaneous pedicle screw for the management of neurologically intact patients with thoracolumbar burst fractures and posterior ligamentous complex injuries. Methods: In the study, 35 patients were reviewed，including 20 males and 15 females, with an average age of 34.1 years (18 to 52), and the mean followup for 25.8 months (24 to 36). Results: The duration of surgery was (95.8±12.3) minutes and intraoperative blood loss was (83.0±40.7) mL. There were no major perioperative complications, with the exception of 2 patients who developed a superficial wound infection. LKA and VBH were significantly improved immediately after surgery （P＜0．001）. No significant loss of correction was observed in all the patients（P＞0．05）. Screw misplacement was observed in 9/140 (6.4%) and no patient showed neurological deficit as a result of screw misplacement. Conclusion: The minimally invasive percutaneous pedicle screw has a good clinical outcome in the treatment of thoracolumbar burst fractures with posterior ligamentous complex injury, which could maintain the fracture reduction effectively, and minimize the iatrogenic soft tissue injury.
KEY WORDSThoracic vertebrae；Lumbar vertebrae; Surgical procedures, minimally; Fracture fixation, internal; Ligaments

Key words: Lumbar vertebrae, Surgical procedures, minimally, Fracture fixation, internal, Ligaments