Spine Osteotomy Resulting In A Spinal Wedge

Description

Lumbar vertebrae are shown with a surgically created bony wedge resection through the posterior elements and vertebral body, consistent with a corrective osteotomy of the spinal column. The wedge gap opens anteriorly while the posterior column appears relatively shortened, bringing the superior and inferior vertebral segments toward a new sagittal alignment. Pedicles, laminae, spinous processes, and adjacent intervertebral disc spaces provide orientation for the level of correction, with the osteotomy margins sharply defined against intact cancellous and cortical bone. Edges are crisp. Such a configuration is most often discussed in the setting of fixed sagittal deformity, where procedures like a pedicle subtraction osteotomy or closing wedge osteotomy are planned to restore lumbar lordosis and global sagittal balance in conditions such as iatrogenic flatback syndrome, ankylosing spondylitis, or post-traumatic kyphosis. The single, fixed perspective makes the geometric logic of correction easy to teach: posterior column shortening, anterior column closure or hinging depending on technique, and the relationship of the osteotomy apex to the vertebral body and pedicles, which matters for screw trajectory, canal safety, and closure mechanics. Bony landmarks remain readable even with the osteotomy site emphasized, supporting discussion of where the dural sac and nerve roots would be at risk during resection and closure. Spine surgery lectures, orthopedic and neurosurgical board review material, and deformity case reports can use this illustration to communicate osteotomy type and wedge orientation without relying on intraoperative photographs. It also fits anatomy and biomechanics modules that cover sagittal plane correction and lumbar load sharing after osteotomy and instrumented fusion. Anatomical accuracy verified by SciePro's Medical Advisory Board.