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  • Writer's pictureDr. Rory Dopps

Understanding L4: The Fourth Lumbar Vertebra and Its Role in Your Health

Updated: Jul 11, 2023

An anatomical illustration of the human spine focusing on the L4 vertebra


Continuing our journey through the spine, we now reach the L4 vertebra. This fourth lumbar vertebra, like the ones before it, plays a significant role in our overall health and well-being.

Understanding L4: The Fourth Lumbar Vertebra

The L4 vertebra is the fourth bone in the lumbar spine, located beneath the L3 vertebra. It's part of the complex network of bones, nerves, and muscles that allow for the flexibility and movement of the lower back and lower body.

The L4 vertebra and its associated nerves are responsible for transmitting signals related to the control and sensation of different parts of the lower body, including the prostate gland, muscles of the lower back, and sciatic nerve.

Nerve Function and Potential Symptoms

The nerves at the L4 level primarily control the prostate gland, muscles of the lower back, and the sciatic nerve.

When there's a misalignment or subluxation at the L4 level, it can lead to a variety of symptoms due to the compression of the nerve root. These can include conditions like sciatica, lumbago, or difficult, painful, or too frequent urination.

Chiropractic Care and L4

Chiropractic care can play a crucial role in maintaining the health of the L4 vertebra. By correcting misalignments or subluxations at theL4 level, chiropractic adjustments can alleviate the associated symptoms, enhance the function of the nerves, and support overall nervous system function.


Understanding the role of each vertebral level in our health is crucial for maintaining a healthy lifestyle. If you're experiencing symptoms that might be associated with an L4 misalignment, don't hesitate to seek help. Schedule your chiropractic adjustment online today at and start your journey towards optimal health. Our team at Dopps Chiropractic is committed to supporting you in all aspects of health, including enhancing your body's natural resilience.

In our next blog post, we'll explore more about the role of the L5 vertebra in health and the symptoms that can be associated with its misalignment. Stay tuned!


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