Need to understand the L4-L5 spinal motion segment and how it impacts your lower back pain? This video breaks down the anatomy, biomechanics, and common conditions associated with the L4-L5 level. Whether you're a student, a patient, or just curious, you'll learn why this segment is crucial for movement and stability. Keywords: L4 L5 disc, lower back pain, spinal anatomy, nerve compression, sciatica relief, physical therapy, lumbar spine, L4-L5 herniation. | Spine-health