What it means
The root in words about the lower back. The lumbar spine is made of five vertebrae, L1 to L5. A lumbar puncture is a needle placed between two of them to take spinal fluid, and lumbago is an old word for low back pain. Lumbosacral means relating to the lower back and the sacrum.
At a glance
| Also written | lumbo- |
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Related terms
vertebra
One of the bones that stack together to form the spine.
lumbar puncture
A procedure in which a needle is put between two bones in the lower back to take out spinal fluid or give medicine; a spinal tap.