What Is the Lumbar Spine?
The lumbar spine is the lower section of the vertebral column between the thoracic spine and sacrum. It contains vertebrae that support the upper body, allow trunk movement, and help protect structures connected to the lower back. The lumbar spine also works with nearby discs, joints, muscles, and nerves during daily activity.
Quick Facts About Lumbar Spine
Category
Lower spinal region
Used for
Movement and upper-body support
Common confusion
Lumbar spine pain is not always spinal pain
Also called
Lower back spine, Lower back
Often discussed with
Back Pain Treatment, Chiropractic Adjustment
Key Takeaways About Lumbar Spine
- It sits between the mid-back and sacrum.
- Movement depends on nearby joints, discs, muscles, and nerves.
- Lower-back pain does not always come from the spine itself.
How Lumbar Spine Works
The lumbar spine works as a mobile support section of the back. Its vertebrae share load through small joints and discs, while surrounding muscles help control bending, lifting, and turning. Nerve roots leave the spinal canal through openings near these structures.
Related glossary terms: Sacrum, Vertebral Disc, Nerve Root.
Clinicians assess the lumbar spine by observing posture, walking, movement, and responses during a physical examination. They may also consider the sacrum and nerve root because those structures connect with the lower back. The findings help distinguish a local back issue from symptoms that extend into the hip or leg.
From the Arrowhead Clinic Chiropractor team
When we assess the lumbar spine during Back Pain Treatment, we connect the examination findings with movement patterns and reported symptoms. We check how the lower back works with the pelvis, hips, and legs, then use that context to guide the care plan.
Lumbar Spine in Practice: A Real-World Example
A person with lower-back discomfort may have symptoms during sitting, bending, or standing. During Back Pain Treatment, the lumbar spine is considered alongside nearby muscles, joints, and nerve-related symptoms to identify useful next steps.
Related Services
Related Terms
Sacrum
The sacrum is a broad, triangular bone at the base of the spine. It connects the…
Vertebral Disc
A vertebral disc is a flexible structure between neighboring spinal bones that cushions movement and helps…
Nerve Root
Nerve Root is a bundle of nerve fibers that branches from the spinal cord through an…
Facet Joint
A facet joint is a small, paired connection between the back portions of neighboring spinal bones…
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