Anatomical Presentation Of A Lateral Lumbar Interbody Fusion

Description

Cadaveric-style anatomy frames the lumbar spine from a lateral approach as sequential steps track access to the intervertebral disc space for lateral lumbar interbody fusion (LLIF). The animation centers on the lumbar vertebral bodies and adjacent interbody space, with the annulus fibrosus opened to reveal the nucleus pulposus and cartilaginous endplates before preparation of the bony endplates. A spinal cage (interbody implant) advances from lateral to medial into the disc space, seating between the superior endplate of the caudal vertebra and the inferior endplate of the cranial vertebra while maintaining segmental alignment. Expect neighboring landmarks to remain in view for orientation, including the psoas major anterior to the transverse processes and the posterior elements (pedicles, laminae, and facet joints) sitting posteriorly as reference. LLIF matters because it restores disc height and indirect foraminal decompression without a posterior midline dissection, a common strategy for degenerative disc disease, low-grade spondylolisthesis, and coronal deformity where stabilization and height restoration are priorities. Motion clarifies what static art often cannot: the progressive disc evacuation, endplate preparation (where subsidence risk is set), and the final cage position that tensions the annulus and longitudinal ligaments to re-expand the neural foramina. Cage placement is the point. Use this animation in spine surgery teaching modules, device training for interbody cage systems, and medical publisher content explaining lateral approaches and implant biomechanics in the lumbar region. It also fits patient-facing counseling videos when paired with plain-language narration on stabilization and fusion goals. Anatomical accuracy verified by SciePro's Medical Advisory Board.