11/12/2025
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The sciatic nerve - always seems to be getting the blame for everything
Here are some cool facts about this powerful nerve:
(But remember - it’s merely an extension of the spinal cord)
It’s the longest and thickest nerve in the human body – The sciatic nerve can be up to 2 cm wide (about the width of your little finger) and runs all the way from your lower spine through your buttocks and down to your toes.
It’s actually a bundle of nerves – What we call the “sciatic nerve” is formed from five spinal nerve roots (L4–S3) that merge in the lower back, then branch out again down the leg. So it’s more like a nerve superhighway than a single wire!
It controls both movement and sensation – The sciatic nerve is a mixed nerve, meaning it carries signals to your muscles (motor) and from your skin (sensory). That’s why irritation can cause both pain or numbness and weakness or loss of movement in the leg.
The coolest part?
2 sets of our suboccipital muscles in the neck connects to the dura mater (protective covering of the spinal cord and brain), and tension in these muscles can affect tension along the dura mater, ultimately having the possibility of affecting the sciatic nerve further down!
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