Lumbar Nerves, Sciatica Nerve, Pyriformis Syndrome

The anatomy of the lumbar region we are refering to is the lower spine region; lumbar referring to the abdominal segment of the torso, between the diaphragm and the sacrum. The vertebrae in the region are designated L1 to L5.

The lumbar nerves are the five spinal nerves emerging from the lumbar vertebrae. The nerve roots from the lumbar and sacral levels come off the bottom of the spinal cord called cauda equina, and exits the spine dividing into posterior and anterior divisions. The sciatic nerve is the longest of these nerves, running from the back of the pelvis through the buttocks and all the way down both legs to the feet. Due to compression or irritation to the sciatic nerve, can cause a pain that radiates out from your lower back and travels down the leg and calf musle. Disc compression is the most common cause of sciatica.

The illustrations below were commissioned by a company driven by the latest research and a producer of realistic models of the spine. Intended for a medical paper and for a patient information poster, to highlight how nerves can become trapped when the lower lumbar vertebrae start to degenerate, causing the compression of the nerves.

For further information on the anatomy of the lumbar vertebrae and disc compression, visit this gallery of illustrations here.

To contact the medical team about commissioning your own illustrations, click here.

Examples of Sciatica Illustrations

Lower lumbar nerves

Digital illustration with focus on the location of lumbar nerves

Pyriformis Syndrome is compression of the sciatic nerve

The skeleton showing Neurogenic Pyriformis Syndrome

Lower back pain illustration showing patient discomfort

Trapped lumbar nerve called the sciatica nerve


See Related Medical Illustration Galleries

Please complete the form below to sign up for our email newsletter so you get the
latest information straight to your inbox!

* Indicates a required field