Facet Injection Procedure In Posterior View

Description

Posterior lumbar anatomy remains in view as the animation tracks a facet (zygapophysial) injection into a single motion segment. The skin and subcutaneous tissues overlie the thoracolumbar fascia, with the erector spinae muscle mass positioned bilaterally and the spinous processes aligned on the midline. As the needle advances from a posterior approach, it courses medial to the transverse process and toward the inferomedial margin of the superior articular process, entering the zygapophysial joint space between adjacent articular facets. Segmental orientation is reinforced by the paired laminae and the interspinous interval, with the target joint located lateral to the spinous process and posterior to the vertebral body. Lumbar facet interventions are a workhorse technique for suspected facetogenic low back pain, and accuracy matters because a few millimeters can mean intraarticular placement versus periarticular spread along the capsule. The animated sequence clarifies how the needle trajectory relates to bony end points that clinicians palpate or confirm under fluoroscopy, and why the joint line sits obliquely rather than purely sagittal. It also helps learners distinguish a true zygapophysial joint injection from a medial branch block, which targets the dorsal ramus branches along the junction of the superior articular process and transverse process. Use this animation in pain medicine teaching modules, anesthesiology and PM and R procedure labs, and spine intervention chapters that need a clean posterior procedural overview without distracting cutaways. It also fits patient education on what will be numbed, what is contacted, and why bony landmarks guide needle placement during lumbar facet injections. Anatomical accuracy verified by SciePro's Medical Advisory Board.