The lumbar nerves are five spinal nerves which arise from either side of the spinal cord below the thoracic spinal cord and above the sacral spinal cord. They arise from the spinal cord between each …

At each level, a pair of nerve roots emerge from the right and left sides of the spinal cord. Each pair consists of a dorsal root at the back and a ventral root in the front.

Lumbosacral radiculopathy is a disorder that causes pain in the lower back and hip which radiates down the back of the thigh into the leg. It is caused by compression of nerve roots exiting the spine at …

Spinal nerves are composed of ventral and dorsal roots. The ventral roots primarily carry motor outflow axons and autonomic fibers. Typically, several adjacent spinal roots innervate each muscle. The …

Jul 19, 2025 · Lumbar nerve roots play a critical role in connecting the spinal cord to the lower body, enabling movement and sensation in the legs, feet, and pelvic region.

The lumbar nerves are mixed nerves as each is formed by the union of a posterior (sensory nerve fibers) and an anterior root (motor nerve fibers). A spinal (dorsal root) ganglion is located at the proximal …

Nov 6, 2025 · The anterior rami of the L1-L4 spinal roots divide into several cords. These cords then combine together to form the six major peripheral nerves of the lumbar plexus.

Oct 30, 2023 · Learn the anatomy of the spinal nerves, including their roots, components and functions faster and more efficiently with this comprehensive article.

Types of nerve root pain include: Lumbar nerve pain (sciatica): Lumbar nerve pain can be a combination of back and leg pain, with pain worse in the leg below the knee. Usually caused by a slipped disk.

Aug 17, 2024 · lumbar spine L5 nerve root travels under L5 pedicle (match) extra C8 nerve root (no corresponding C8 pedicle) allows transition horizontal (cervical) vs. vertical (lumbar) anatomy of …