Herniated nucleus pulposus (HNP), also referred to as a herniated disc, is a common spine pathology that occurs approximately 95% of the time at the L4-L5 or L5-S1 level (Fisher et al., ...

The lumbar spine rests upon the sacrum. The place where they meet is called the lumbosacral joint, or L5-S1. The muscles in your lumbar spine work with your abdominal muscles to move your torso ...

for L4, 1.74 (95% CI 1.04–2.93) for L5, and 1.29 (95% CI 0.97–1.72) for S1 nerve root impingement. An overall clinical evaluation, concluding on the level and side of the radiculopathy was ...

At the L5/S1 level, 58% were found to have an element of disc displacement ... the results suggest that elite athletes have a greater prevalence and greater degree of lumbar disc degeneration than the ...

According to spine-health.com, the L5-S1 disc is a spinal joint found at the bottom of the lumbar spine (L5) and top of the sacrum (S1). This disc is critical in “supporting the lower back and ...