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The innervation is supplied by the inferior gluteal nerve, a branch of the sacral plexus (L4-S2). Numerous vessels and nerves run under the gluteus maximus muscle, including the sciatic nerve, the pudendal nerve and the superior gluteal vessels.
The innervation of the back is from the meningeal branches and dorsal rami of the spinal nerves. Each spinal nerve gives off a meningeal branch (or sinuvertebral nerve), which reenters the vertebral canal and supplies vasomotor and sensory fibers to dura, ligaments, periosteum, and blood vessels.