The Superior Articular Process Of The Lumbar Vertebra In Superior View

Description

Arising from the junction of pedicle and lamina, the superior articular process of a lumbar vertebra projects superiorly and slightly medially, ending in the superior articular facet that faces posteromedially toward the vertebral canal. From a superior perspective, the animation tracks the gently concave to planar facet surface and its rim as it rotates relative to the paired process on the opposite side, keeping the spinous process posterior and the vertebral body anterior as fixed landmarks. Small shifts in angle clarify how the right and left zygapophyseal (facet) joints sit posterior to the intervertebral disc and lateral to the lamina, forming the posterior elements of the motion segment. Lumbar facet orientation governs coupled motion and load sharing, and this is where clinicians localize facetogenic low back pain and target medial branch blocks or radiofrequency ablation along the course of the dorsal ramus over the transverse process and superior articular process. Animation adds what text struggles to convey: how the superior articular facet “receives” the inferior articular facet of the vertebra above during extension, and how its sagittal plane bias limits axial rotation while permitting flexion and extension. Short, controlled movement makes the joint line readable. Use this clip for spine anatomy and kinesiology teaching, for radiology correlation when explaining why parasagittal CT or oblique lumbar radiographs best profile the zygapophyseal joints, and for patient education materials on facet arthropathy and guided injection targets. It also fits surgical training content discussing posterior element landmarks during midline exposure and decompression. Anatomical accuracy verified by SciePro's Medical Advisory Board.