The Anatomy Of The Superior Articular Facet Of The Lumbar Vertebra

Description

Centered on a single lumbar vertebra, the sequence isolates the superior articular facet on the superior articular process at the junction of pedicle and lamina. Rotation and progressive reveal clarify its concave, posteromedially facing joint surface and its relationship to the adjacent inferior articular facet of the vertebra above, completing the lumbar zygapophyseal (facet) joint. Nearby landmarks likely remain in frame for orientation, including the vertebral body anteriorly, spinous process posteriorly, and transverse processes laterally. Orientation is the lesson. Facet morphology in the lumbar spine governs coupled motion and load sharing between the intervertebral disc and posterior elements, so small changes in surface orientation matter clinically. The animation helps connect form to function by showing how the superior articular facet guides flexion and extension while limiting axial rotation, a concept that becomes concrete when you watch the articular surfaces align through a controlled movement. This is the joint implicated in facet arthropathy and medial branch pain patterns, and it is the target region for diagnostic medial branch blocks and radiofrequency ablation, where knowing the bony contour and joint line improves procedural planning. Use it in gross anatomy and musculoskeletal modules when teaching the vertebral arch and zygapophyseal joints, or in radiology instruction to prime learners for identifying lumbar facet joint orientation on axial CT and oblique lumbar radiographs. It also fits spine surgery and interventional pain slide decks when introducing posterior element degeneration, spondylolisthesis mechanics, and the anatomic rationale behind facet injections. Anatomical accuracy verified by SciePro's Medical Advisory Board.