Pedicle Of The Lumbar Vertebra, Superior View

Description

Lumbar vertebral pedicles frame the lateral margins of the vertebral foramen in this superior perspective, appearing as short, thick cylinders projecting posteriorly from the posterolateral corners of the vertebral body. Anteriorly, the vertebral body and its superior endplate define the front of the ring, while each pedicle transitions posteriorly into the laminae, which converge toward the base of the spinous process in the midline. Laterally, the pedicle roots sit medial to the transverse processes, and the superior articular processes rise at the posterolateral junction of pedicle and lamina. Bony corridors dominate the field. Pedicle morphology is the deciding factor for safe posterior instrumentation, because the pedicle is the osseous conduit for lumbar pedicle screws and its medial wall lies immediately adjacent to the thecal sac within the spinal canal. This single-frame, superior (axial-like) viewpoint aligns well with how surgeons and radiologists think about medial and lateral breach on CT, and it makes the pedicle isthmus, cortical thickness, and relationship to the vertebral body easier to judge than in oblique views. It also supports teaching of lumbar spinal stenosis anatomy by clarifying how the pedicles contribute to the boundaries of the central canal and lateral recess. Use this illustration in spine surgery texts to discuss pedicle screw entry points and trajectories, in radiology atlases alongside axial CT of the lumbar spine, and in anatomy or orthopedic courses covering the vertebral arch, vertebral foramen, and posterior elements of the lower back. Anatomical accuracy verified by SciePro's Medical Advisory Board.