The L5-S1 spinal motion segment, also called the lumbosacral joint, is the transition region between the lumbar spine and sacral spine in the lower back. In this region, the curvature of the spine changes …

Nov 1, 2023 · L5, the fifth lumbar vertebra, is the lowest and largest of the lumbar vertebrae, and it plays a central role in supporting the lower back and connecting the lumbar spine to the sacrum, forming a …

Dec 14, 2025 · L5-S1 consists of the last bone in the lumbar spine (low back), called L5, and the triangle-shaped bone under it, known as the sacrum. The sacrum is made of five fused bones—S1 is …

Dec 30, 2025 · The L5-S1 is what I call the “workhorse junction” of your spine. It’s the single point where your flexible lumbar spine meets your rigid sacrum, and it bears the brunt of nearly every movement …

3 days ago · The fifth lumbar vertebra (or the L5 vertebra) is the largest and most inferior of the lumbar vertebrae. As the last of the lumbar vertebrae, the L5 vertebra bears more body weight than any of …

The L5 vertebra is part of the lumbar spine, consisting of five large vertebrae labeled L1 through L5. It is situated just above the sacrum, a triangular bone at the base of the spine that connects to the pelvis.

In this comprehensive guide, we will delve into what the L5 spine is, the common causes of L5 spine pain, the symptoms to watch for, and the most effective treatments available to alleviate the discomfort.

Jan 9, 2026 · L4-L5 disc replacement surgery is a spine surgery procedure intended to relieve pain in the lower back by replacing a worn or damaged disc with an artificial one.

Feb 17, 2022 · Your lumbar vertebrae, known as L1 to L5, are the largest of your entire spine. Your lumbar spine is located below your 12 chest (thoracic) vertebra and above the five fused bones that …

Discover the anatomy, features and variations of the largest lumbar vertebra - L5. Learn about its ossification, clinical correlates, and more.