Anatomical Result Of An Anterior Lumbar Interbody Fusion, Lateral View

Description

Postoperative lumbar anatomy is rendered in lateral profile, centering on the fused motion segment after an anterior lumbar interbody fusion (ALIF). The vertebral bodies and their superior and inferior endplates bracket the treated intervertebral disc space, where a prosthetic interbody cage occupies the anterior to mid-disc region and restores disc height. As the sequence advances, adjacent lumbar vertebrae remain aligned in the sagittal plane while the implant stays seated between the apophyseal ring margins, emphasizing its position relative to the anterior longitudinal ligament and the posterior vertebral line. Implant placement is the focus. ALIF changes load sharing across the anterior column and alters the geometry of the neural foramina, so seeing the cage’s relationship to endplates and segmental lordosis has direct clinical relevance. A lateral animation clarifies concepts that are hard to teach in a single frame, including how distraction of the disc space can indirectly decompress the exiting nerve root by increasing foraminal height, and how excessive cage height or malposition can concentrate stress at the endplate and predispose to subsidence. For surgical planning and postoperative review, the ability to track alignment frame by frame helps connect implant selection to sagittal balance, a driver of adjacent segment disease and persistent mechanical low back pain. Use this asset in spine surgery lectures covering ALIF indications at L4 to L5 and L5 to S1, in radiology teaching files that correlate lateral radiographs with expected postoperative appearance, or in device and outcomes publications discussing cage position, lordotic angle, and fusion mechanics. It also fits patient-facing education when explaining why an anterior approach can restore disc height without posterior decompression. Anatomical accuracy verified by SciePro's Medical Advisory Board.