Sacral plexus
Sacral plexus SACRAL PLEXUS Sacral plexus (L4-S4) – forms anterior to piriformis muscle. Lies immediately inferior to the lumbar plexus. Formed by the ventral (anterior) rami of spinal nerves L4, L5, and S1 through S4. STRUCTURE: Formed from ventral rami of L4-S4; Contribution of L4-L5 is from Lumbosacral trunk. The nerves forming the sacral plexus converge towards the […]


