Pedicle Of The Lumbar Vertebra, Lateral View

Description

Lumbar vertebral pedicle bridges the posterolateral margin of the vertebral body to the vertebral arch, forming a stout strut that sits posterior to the vertebral body and anterior to the lamina in this lateral perspective. Anteriorly, the vertebral body dominates the frame, while the pedicle projects posteriorly toward the junction with the lamina and the base of the transverse process, with the superior and inferior vertebral notches outlining the margins of the intervertebral foramen. Just posterior to the pedicle, the pars interarticularis and the superior and inferior articular processes define the facet region, a key landmark when orienting the posterior elements in the lumbar spine. Pedicle anatomy matters because it is the primary bony corridor for transpedicular instrumentation, and small errors in trajectory risk medial breach into the spinal canal or lateral breach toward the exiting nerve root within the foramen. Pedicle morphology varies by level, with generally wider, more sagittally oriented pedicles caudally, so a strict lateral view helps learners and surgeons correlate what they feel with what they expect on fluoroscopic lateral imaging during pedicle screw placement. Alignment is everything. Educators can use this illustration in gross anatomy labs and spine modules to teach how the vertebral body, pedicle, and lamina contribute to the vertebral foramen and the intervertebral foramen, and to reinforce the difference between pedicle and pars interarticularis in discussions of spondylolysis. Medical publishers will also find it appropriate for orthopedic and neurosurgical chapters on lumbar fixation, as well as radiology primers that explain pedicle evaluation on lateral radiographs and CT sagittal reconstructions. Anatomical accuracy verified by SciePro's Medical Advisory Board.