Medically reviewed by Brigid Dwyer, MD The lumbosacral joint, also called L5-S1, is a term used to describe a part of the spine. L5-S1 is the exact spot where the lumbar spine ends and the sacral ...

Sciatica is defined as pain radiating down the leg from the lower back. Sciatica occurs when the nerve roots that form the sciatic nerve, L4, L5, S1, S2, and S3 are compressed, causing pain in the ...

Your bottom vertebra is called the L5 lumbar vertebra. It’s joined to your sacrum, the upper ridge of your pelvis, ... Or, you could have a limited range of motion in your lower back.

A 93-year-old woman underwent a successful 2-level lumbar decompression with spinal anesthesia, according to a case study published June 23 in the Journal of Neurosurgery. She had laminectomies at L4 ...

The lumbosacral spine is made up of the five lumbar vertebral bones (L1 thru L5), the sacrum (the bony “shield” at the bottom of your spine), and the coccyx (tailbone).

An MRI scan revealed severe spinal canal stenosis at L3-L4 and L4-L5, as well as a herniated nucleus pulposus on the right at L5-S1 (Figs 11, 12).

Lumbar Spondylolisthesis: (Left) T1-weighted sagittal MRI; (Right) T2-weighted sagittal MRI. Note the severe canal stenosis at the L4-L5 disk level. Also note that the L4 vertebral body is displaced ...

Despite greater operative complexity, inclusion of L5-S1 in oblique lumbar interbody fusion may be safe and feasible with no increase in early complications, according to published results. Chirag ...

The two most commonly affected lumbar facet joints are L4–L5 and L5–S1, so the nerves innervating these joints — the L3 and L4 medial branches and the L5 dorsal ramus — are most frequently ...

Lumbar retrolisthesis is when parts of your backbone are slipping backward on one another. Although this condition generally causes few symptoms, there’s evidence that lumbar retrolisthesis can ...