- - - MD, Bone and joint research center, Department of Orthopedic surgery, Shiraz University of Medical Sciences, Shiraz, Iran
- - - MD, Bone and joint research center, Department of Orthopedic surgery, Shiraz University of Medical Sciences, Shiraz, Iran
- - - MD, Bone and joint research center, Department of Orthopedic surgery, Shiraz University of Medical Sciences, Shiraz, Iran

Background: Axial load on thoracolumbar junction, both mechanical and anatomical transitional zone, causes the compression and flexion of the spine, and consequently thoracolumbar burst fractures. Objective: This study aimed to investigate the effect and prognostic factors associated with the postural and instrumented reduction on the restoration of vertebral height and kyphosis angle in thoracolumbar burst fractures.Material and Methods: This retrospective cohort study was conducted on ۴۱ patients with A۳, A۴, and B type thoracolumbar burst fractures, subjected to postural and instrumented reduction for the restoration of vertebral height and kyphosis angle. The magnitude and correction of kyphotic deformity and percentage of vertebral body collapse were measured before and after postural reduction, and after instrumental insertion to find if they were affected by fracture type and level, time-to-surgery, and use of pedicular screws at the fractured level. Results: Postural and instrumental reduction significantly improved both the kyphosis angle and the percentage of vertebral body height, regardless of AO types (p.value Conclusion: AO type A۳, and A۴, time to surgery before ۴ days, and fracture level at L۲ were favorable prognostic factors to better restoration of kyphosis angle using both postural and instrumented reduction.

Thoracolumbar Burst Fractures, Postural Reduction, Instrumental Reduction, Prognostic factors, Retrospective Studies, Prognosis, Spine