The lumbosacral plexus is formed by the ventral branches of the second to fifth lumbar nerves. The lower division of the fourth lumbar nerve joins the fifth, and the lumbosacral trunk thus formed ...

Lumbar disc herniation refers to the condition in which one of the discs in the lower back (lumbar spine) protrudes or ruptures. The lumbar spine consists of a stack of bones called vertebrae ...

Cooled radiofrequency ablation of lumbar nerves exhibited long-lasting, significant pain relief in patients with chronic low back pain.

In other cases, further imaging studies may be required. In some cases, a spinal tap (also called a lumbar puncture) may be necessary to see if there are tumor cells floating in the spinal fluid.