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 …

The L5 and S1 vertebrae have different features: L5 consists of a vertebral body in front and an arch in the back that has 3 bony protrusions: a prominent spinous process in the middle and …

Aug 3, 2025 · The L5-S1 segment comprises two vertebral bones: the fifth lumbar vertebra (L5) and the first sacral vertebra (S1). These vertebrae articulate, forming a junction in the lower back.

The L5-S1 segment sits at the base of your spine, where the lumbar spine meets the sacrum. This area is crucial for movement and stability, but it’s also highly vulnerable to injury and …

Jul 24, 2023 · The L5 S1 joint (or the lumbosacral joint) is a combination of the fifth lumbar vertebra and the first sacral vertebra. It is an important joining that connects the trunk to the …

Dec 22, 2025 · 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 …

May 8, 2025 · Understanding what this diagnosis means, how it appears on medical imaging, and what treatment options are available can help you make informed decisions about your health. …

Lumbar vertebrae The adjacent figure depicts the general characteristics of the first through fourth lumbar vertebrae. The fifth vertebra contains certain peculiarities, which are detailed below. As …

Nov 4, 2024 · Learn about the causes of pain at L5-S1, including disc prolapse and nerve compression, and explore the best treatment options for relief and recovery.

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 …