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Published on: 7/14/2026

Where is the sciatic nerve located?

Yoshinori Abe

Reviewed by Yoshinori Abe, MD

Internal Medicine

The sciatic nerve is the largest and longest nerve in the human body. It begins in the lower back, branches through the hips and buttocks, and extends down the back of each leg to the feet. This nerve plays a critical role in movement and sensation in the lower body.

When the sciatic nerve is irritated or compressed, it can cause a condition known as sciatica—often marked by sharp pain, numbness, or tingling along its path. Because symptoms can vary widely and mimic other conditions, understanding what's really going on is essential to getting the right care.

If you're experiencing pain or discomfort that could be related to the sciatic nerve, don't guess. Take a free, instant, online symptom check to better understand your symptoms and confidently navigate your next steps.

Reviewed for medical accuracy: 07/14/2026

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Important Next Steps

Learn what’s causing your sciatic painSee if sciatica needs urgent careDiscover likely causes of leg painFind OTC relief for sciatica symptomsFind a sciatica doctor near youDiscover home remedies for sciatic painUnderstand if numbness suggests nerve compression

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Explanation

The sciatic nerve is a major nerve that runs from the lower back down through the hips and buttocks and along each leg. It is the largest nerve in the human body.

Location:

  • Starts: In the lower spine (lumbar region).
  • Travels: Through the pelvis and down each leg.
  • Ends: Near the knee, where it branches into other nerves.

Importance:

  • The sciatic nerve is important because it provides sensation and muscle control in the legs.
  • Sometimes, the nerve can be compressed by blood vessels or other structures, causing pain known as sciatica.

Understanding the path and function of the sciatic nerve helps in diagnosing and treating conditions like sciatica, where pain radiates along the nerve's pathway. If you're experiencing symptoms that may be related to sciatic nerve issues, you can use our free AI-powered symptom checker to better understand what might be causing your discomfort.

(References)

  • Giuffre BA, Black AC, & Jeanmonod R. (2025). Anatomy, Sciatic Nerve. Unknown Journal, 29494038.

  • Hu MH, Wu KW, Jian YM, Wang CT, Wu IH, & Yang SH. (2010). Vascular compression syndrome of sciatic nerve caused by .... Annals of vascular surgery, 20472387.

  • Khan H, Ling S, Ali S, Jonnalagadda P, Ramsey F, Weiner M, & Awan O. (2019). Sciatic Nerve Variants in Patients Diagnosed With Sciatica. Journal of computer assisted tomography, 31738201.

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