Lateral Lumbar Interbody Fusion

Description

Approaching the lumbar spine from a lateral corridor, the animation tracks the vertebral column in profile and then into a working view of a single motion segment as the intervertebral disc space is prepared and a spacer cage is advanced between adjacent vertebral bodies. Superior and inferior endplates come into clear relief as the disc material is cleared, and the cage seats centrally within the disc space to restore height and segmental alignment. Motion is sequential and procedural, with the implant’s trajectory oriented medial to lateral landmarks while respecting the anterior longitudinal ligament and the posterior annulus. Lateral lumbar interbody fusion (LLIF) is commonly selected for degenerative disc disease, low-grade spondylolisthesis, and deformity correction when indirect decompression is desired by restoring disc height and tensioning the ligamentum flavum. The stepwise animation clarifies what static figures often blur: how endplate preparation affects cage footprint and subsidence risk, and how incremental distraction changes foraminal dimensions and segmental lordosis. It also frames the clinical tradeoff of the lateral approach, where the transpsoas route places the lumbar plexus at risk (classically higher at L4 to L5), informing neuromonitoring and level selection. Use this sequence in spine surgery teaching modules to introduce LLIF workflow, implant positioning goals, and the concept of indirect neural decompression for residents and fellows. It also fits well in device education, patient-facing procedure overviews, and publishing contexts that need a clean visual explanation of cage placement within the lumbar disc space. Anatomical accuracy verified by SciePro's Medical Advisory Board.