The sacral spinal nerve 2 (S2) is a spinal nerve of the sacral segment.

The sacral spinal nerve 4 (S4) is a spinal nerve of the sacral segment.

Female anatomy often allows one less sacral segment to lock with the pelvis, and this may increase instability.

The lumbosacral joint is a joint of the body, between the last lumbar vertebra and the first sacral segment of the vertebral column.

The sacral spinal nerve 5 (S5) is a spinal nerve of the sacral segment.

The sacral spinal nerve 1 (S1) is a spinal nerve of the sacral segment.

The sacral spinal nerve 3 (S3) is a spinal nerve of the sacral segment.

The synapse between the afferent and efferent limbs occurs in the lowest sacral segments of the spinal cord.

The cords extend from the cervical segments to the sacral segments of the embryo.

Sexual function is also associated with the sacral spinal segments, and is often affected after injury.