Causes
Lumbar radiculopathy occurs as a result of the compression of nerve roots in the lumbar spine. While these nerves are quite sensitive, they become irritated due to a variety of different reasons, mainly some type of injury or trauma. Injuries which cause lumbar radiculopathy include:

• Spinal Stenosis – Narrowing of the spinal canal puts pressure on the nerve roots.
• Lumbar Disc Herniation