Second Lumbar Vertebra L2, Posterior View

Description

Centered in the lumbar column, the male L2 vertebra is highlighted in blue in a posterior view, flanked superiorly by L1 and inferiorly by L3, with the sacrum visible at the caudal end of the segment. The L2 laminae converge at the midline to form a short, broad spinous process, while the transverse processes project laterally from the vertebral arch. Superior and inferior articular processes border the pars interarticularis and help define the zygapophysial (facet) joints, and the interspinous spaces and posterior disc intervals can be inferred between adjacent vertebrae. Bony landmarks read cleanly from behind. Posterior lumbar anatomy matters because it is the surface anatomy a surgeon and interventionalist often works around, and L2 sits at a transition where conus medullaris level and upper lumbar nerve root trajectories influence symptoms and procedure planning. Facet-mediated pain commonly arises from degeneration at the L1-L2 and L2-L3 zygapophysial joints, and pars defects adjacent to the articular processes are assessed when evaluating spondylolysis or segmental instability, even if the classic level is L5. This is a working view. Use this illustration for gross anatomy teaching on the vertebral arch, radiology and orthopedic modules that map posterior bony landmarks to AP and oblique lumbar projections, and patient-facing education explaining facet arthropathy, posterior decompression corridors, or why nerve root irritation can occur at the intervertebral foramen. It also fits well in spine surgery texts and physiotherapy materials discussing lumbar extensor and multifidus attachment sites. Anatomical accuracy verified by SciePro's Medical Advisory Board.