Lumbosacral Plexus
Synonyms
Lumbar Plexus
Plexus, Lumbar
Plexus, Lumbosacral
Plexus, Sacral
Sacral Plexus
The lumbar and sacral plexuses taken together. The fibers of the lumbosacral plexus originate in the lumbar and upper sacral spinal cord (L1 to S3) and innervate the lower extremities.