artificial, disc, replacement, lumbar Artificial Disc Replacment Of The Last artificial, disc, replacement, lumbar Vertebra

Description

Lumbar artificial disc replacement is animated at the lumbosacral junction, focusing on the L5 vertebral body superiorly and the S1 endplate of the sacrum inferiorly, with the L5 to S1 intervertebral disc space opened and then re-established. An anterior corridor is implied, with the pelvic cavity deep to the abdominal wall and the great vessels (aortic bifurcation and common iliac arteries and veins) lying anterior to the disc space as the working field advances to the midline. Motion proceeds in sequence from disc removal and endplate preparation to placement of a prosthetic disc, restoring disc height and segmental alignment. The implant settles between the vertebral endplates and reconstitutes the anterior column. This segment matters because L5 to S1 is a frequent site of degenerative disc disease and discogenic low back pain, and it sits at a biomechanical transition where lumbar lordosis meets the sacral promontory. The animation clarifies how restoring disc space affects foraminal height for the exiting L5 nerve root and traversing S1 nerve root, a relationship that becomes harder to appreciate in a static plate when you are trying to connect disc height loss to radicular symptoms. You also see why endplate preparation and midline positioning are unforgiving at this level. Millimeters count. Use this sequence in spine surgery teaching modules covering anterior lumbar approaches, implant design, and postoperative sagittal balance, or in patient-facing education that contrasts arthroplasty with L5 to S1 fusion and highlights expected motion preservation. It also fits lectures for anatomy and biomechanics courses that need a clear lumbosacral reference for the sacrum, pelvic cavity, and adjacent neurovascular risk. Anatomical accuracy verified by SciePro's Medical Advisory Board.