The Pedicle Of The Lumbar Vertebra In Lateral View

Description

Arising from the posterolateral surface of the lumbar vertebral body, the pedicle projects posteriorly as a short, thick osseous bridge toward the lamina and spinous process, with the superior and inferior vertebral notches defining the intervertebral foramen margins. In lateral view, the animation steps through the transition from vertebral body to pedicle to posterior elements, keeping the pedicle centered while adjacent landmarks slide into alignment for orientation. Superiorly and inferiorly, the articular processes frame the pars interarticularis just posterior to the pedicle, while the transverse process extends laterally from the junction of pedicle and lamina. Scale and depth cues emphasize how stout the lumbar pedicle is compared with thoracic levels. Pedicle anatomy drives everyday spine work because it is the bony corridor for pedicle screw fixation and a key boundary in decompression, foraminotomy, and transpedicular approaches. The sequence clarifies how the pedicle forms the anteromedial wall of the neural foramen and sits immediately posterior to the vertebral body, a relationship that explains why a medial breach can threaten the dural sac or traversing nerve root, while an inferior breach risks the exiting nerve root. Small structure. Big consequences. Use this animation in gross anatomy and musculoskeletal radiology teaching to match lateral fluoroscopic and sagittal CT appearances, or in orthopedic and neurosurgical training modules covering pedicle screw trajectory, pars defects (spondylolysis), and level-specific morphology in the lower back. It also fits textbook figures on lumbar vertebral architecture, spine biomechanics, and common operative corridors. Anatomical accuracy verified by SciePro's Medical Advisory Board.