Lumbar Spine Anatomy: Overview, Gross Anatomy, Natural Variants

The lumbar spine consists of 5 moveable vertebrae numbered L1-L5. The complex anatomy of the lumbar spine is a remarkable combination of these strong vertebrae, multiple bony elements linked by joint capsules, and flexible ligaments/tendons, large muscles, and highly sensitive nerves.

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Anatomy of the lumbar spine showing the intervertebral disc, nucleus pulposus, annulus fibrosis, thecal sac, nerve root, transverse process, spinous

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Lumbar Spine Anatomy Video