Percutaneous fixation and balloon kyphoplasty for the treatment of A3 thoracolumbar fractures

Background: Despite a long history of descriptive and clinical series, there is still no consensus in the treatment of traumatic thoracolumbar fractures. It is now widely accepted that percutaneous surgery in thoracolumbar spine trauma management can achieve the same results as conventional treatment but less morbidity but it is still not clear which are the best indications for these minimal invasive procedures. Methods: Thirty-two adult patients with single type A3 thoracolumbar burst fractures without neurologic deficits were included in this retrospective review of clinical and radiological outcomes after surgical management. All patients underwent combined percutaneous kyphoplasty and short fixation with screws in the vertebral pedicles above and below the fracture. Radiographic evaluation of segmental kyphosis and local kyphotic corrections were made preoperatively, 3 days postoperatively, 12 months post-operatively and at the last follow-up (the mean last follow-up was 41 months post-operatively). Clinical outcomes were determined by SF-36® Health Survey and Oswestry Disability Index scores at 3-month and 12-month follow-ups. Results: Clinical assessments suggested good outcomes as early as the third postoperative month. The clinical outcomes were sustained at one year follow-up. At the last follow-up the segmental kyphosis correction and local kyphotic correction were maintained. Conclusions: Our analysis demonstrates that minimally invasive kyphoplasty and percutaneous short fixation applied to thoracolumbar A3 burst fractures without neurological deficit may achieve results comparable to nonsurgical or open surgical treatment, but with less morbidity and complication, and should be considered as a valid treatment option