The lumbar plexus is a nerve plexus (a network of intersecting nerves) in the body’s lumbar region. It is formed by the ventral branches of the first to the fourth upper lumbar nerves (L1-L4), with ...

Medically reviewed by Brigid Dwyer, MD Key Takeaways The L5-S1 joint can be vulnerable to misalignment or injury. Common causes of pain at L5-S1 include disc herniation and spondylolisthesis.Pain from ...

Lumbar spondylitis is a general term for degenerative changes causing pain in the lower spine. It’s a progressive condition that can lead to a limited range of motion in your back. Lumbar spondylitis, ...

Lumbar retrolisthesis is when parts of your backbone are slipping backward on one another. Although this condition generally causes few symptoms, there’s evidence that lumbar retrolisthesis can lead ...

Osteoarthritis (OA) of the spine involves the facet joints, which are located in the posterior aspect of the vertebral column and, in humans, are the only true synovial joints between adjacent spinal ...

Lumbar decompression surgery aims to release compressed nerves in the lower back. This procedure may ease pain and improve mobility in those with spinal conditions. Conditions such as herniated disks, ...

A low-back disc herniation can be a harrowing experience. One minute you're going about your day and the next you're laid up with pain, numbness, or tingling into your back and legs. Luckily, in many ...