All About the L4-L5 Spinal Segment - Spine-health
The L4 and L5 are the two lowest vertebrae of the lumbar spine. Together with the intervertebral disc, joints, nerves, and soft tissues, the L4-L5 spinal motion segment provides a variety of functions, including supporting the upper body and allowing trunk motion in multiple directions. 1 Waldman SD. Functional Anatomy of the Lumbar Spine.
Lumbar Spine: What It Is, Anatomy & Disorders - Cleveland Clinic
Your lumbar spine is the lower back region of your spinal column or backbone. It consists of five bones (L1-L5). Other structures in or around your lumbar spine are your intervertebral disks, spinal cord and nerves, muscles, tendons and ligaments. Your lumbar spine supports the weight of your body and allows a wide range of body movements.
Lumbar Spine Anatomy and Pain
The normal anatomy, as well as potential problems in the lumbar spine, are better understood by focusing on a spinal motion segment. Read more about Spinal Anatomy and Back Pain. A single lumbar motion segment is comprised of: Two consecutive vertebrae, such as …
Where Is L4 and L5 on Your Spine | Penn Spine & Orthopedic
2024年6月14日 · L4 and L5, the fourth and fifth lumbar vertebrae, are located in the lower spine. L4 sits between L3 and L5, while L5 connects to the sacrum at the lumbar spine's base. These vertebrae, crucial in weight-bearing, are prone to conditions …
Lumbar Spine - Anatomy, Structure, Function, Muscles
2024年2月12日 · Bone, cartilage, ligaments, nerves, and muscles make up the lumbar spine. Every one of these elements is essential to the shape and functionality of the lumbar spine. The lumbar spine serves three primary purposes. To begin with, the …
Anatomy, Back, Lumbar Spine - StatPearls - NCBI Bookshelf
2023年8月14日 · Each lumbar spinal nerve exits below its corresponding vertebra—for example, the L4 nerve exits below the L4 vertebra through the L4-L5 neural foramen. Most lumbar disc herniations occur centrally and do not compress the exiting nerve root at the level of the disc.
Lumbar vertebrae: anatomy of the bony lumbar spine | Kenhub
2023年11月16日 · Structure and location of the lumbar spine and features of the lumbar vertebrae. The lumbar spine is located in the lower half of the vertebral column, inferior to the thoracic vertebrae / rib cage and superior to the pelvis and sacrum. The lumbar vertebrae are five in number and desginated as vertebrae L1-L5.
Spinal Motion Segment: L4-L5 Animation - Spine-health
The L4-L5 spinal motion segment is located in the lower portion of the lumbar spine and consists of L4 and L5 vertebrae, and the anatomical structures connecting them. This segment helps provide flexibility to the trunk and low back, supports the upper body, and protects the cauda equina and nerve pathways.
Lumbar Spine: Function, Anatomy, and Disorders Explained
Let’s explore the details of the lumbar spine’s anatomy, focusing on the vertebral bodies, discs, and the important spinal nerves. The lumbar spine has five vertebral bodies, labeled L1 to L5. These solid bones provide the foundation for the lower back. They support the weight of the upper body and allow for movement.
Anatomy, Back, Lumbar Vertebrae - StatPearls - NCBI Bookshelf
2023年7月30日 · Typical lumbar vertebrae have several features distinct from those typical of cervical or thoracic vertebrae. The most notable distinction is the presence of a large vertebral body. The spinous process is short and thick, relative to the size of the vertebra, and projects perpendicularly from the body.