Medically reviewed by Brigid Dwyer, MD The lumbosacral joint, also called L5-S1, is a term used to describe a part of the ...

or L5-S1. The muscles in your lumbar spine work with your abdominal muscles to move your torso and lower back. These muscles include: Above and below each vertebra is an intervertebral disc.

Herniated nucleus pulposus (HNP), also referred to as a herniated disc, is a common ... lowest part of the spinal cord. It fills the thecal sac from approximately L2 to S1. Symptoms include ...

Results: The disc signal intensity was progressively reduced the more caudal the disc space. It was most common at the L5/S1 level, and ... training activities have the most impact on the lumbar spine ...

Background Clinical examination of patients with chronic lumbar radiculopathy ... 1.74 (95% CI 1.04–2.93) for L5, and 1.29 (95% CI 0.97–1.72) for S1 nerve root impingement.