[Deformities following spinal injury at the thoracolumbar junction]

Due to anatomical characteristics, posttraumatic deformities following spinal injury occur in particular at the transition from the flexible lumbar spine to the rigid thoracic spine. Incorrectly classified vertebral body fractures can lead to the development of posttraumatic kyphosis due to incorrect treatment. It is likewise important to evaluate the integrity of adjacent discs and assess the sagittal index. Management of kyphosis is difficult and requires radiological evaluation following exact planning. Reconstruction of the sagittal anatomical contour is crucial to prevent stress in the compensatory curves. Performing a dorso-ventral or dorso-ventro-dorsal approach, pedicle subtraction osteotomy or an eggshell procedure is also helpful to achieve good correction without anterior reconstructive surgery. The clinical result is not dependent on correct repositioning alone; poor results can be expected in cases with pseudarthrosis, neurological deficits and severe kyphotic deformities. This article gives an overview of pathogenesis, diagnostic steps and therapeutic options for corrective spinal surgery.