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In this lecture Professor Zach Murphy will be teaching you about the sacral plexus. We go over the various branches of the sacral plexus, what structures are supplied by the those branches and clinical correlations associated with damage to the sacral plexus.
The sacral plexus is a network of nerve fibers that supplies the skin and muscles of the pelvis and lower limb. It is located on the surface of the posterior pelvic wall, anterior to the piriformis muscle.
The plexus is formed by the ventral rami (divisions) of the sacral spinal nerves S1, S2, S3 and S4. It also receives contributions from the lumbar spinal nerves L4 and L5.