Sacral plexus is a nerve plexus formed by the fourth and fifth lumbar (lumbosacral trunk) and first, second, and third sacral nerves. It lies on the inner surface of the posterior wall of the pelvis usually embedded in the piriformis muscle. Its nerves supply the lower limbs. Its major product is the sciatic nerve. The nerves come together toward the posterior of the greater sciatic foramen and form a band that continues as the sciatic nerve that runs through the hip joint, down the lower limb. The sacral plexus together with the lumbar plexus forms one large nerve plexus called the lumbosacral plexus. Synonym: sciatic plexus, plexus sacralis, ischiadic plexus.
- Sacral Plexus. (2015). Retrieved from Physiopedia website: https://www.physio-pedia.com/Sacral-Plexus
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