Two vertebrae such as l4 l5 stacked vertically with an intervertebral disc between them. The bony spinal canal sits in the center rear of the spine.
The two adjacent vertebrae are connected in the back of the spine by two small joints called facet.

Anatomy lumbar spine. This triangle shaped bone is made up of five fused vertebrae. The lumbar spine low back is the third major region of the spine. What is the lumbar spine.
It is below the cervical spine and thoracic spine figure 1. It also has a complicated innervation and vascular supply. Most people have five bones vertebrae in the lumbar spine although it is not unusual to have six.
There are nerves that branch off from the spinal column at. This small bone is better known as the tailbone. These bones help to provide mobility and stability to your back and spinal column and are an attachment point for many muscles and ligaments.
Anatomy of lumbar spine spinal canal. Numbered l1 through l5 these odd shaped vertebrae signal the end of the typical bones of the spinal column. The lumbar spine consists of 5 moveable vertebrae numbered l1 l5.
It fits like a wedge into the back of the pelvis at the hips. In the back of the spine the vertebrae are hooked together by paired joints called facet. Each lumbar spine segment is comprised of.
Mechanically everything in the lumbar spine revolves around the disc. The complex anatomy of the lumbar spine is a remarkable combination of these strong vertebrae multiple bony elements linked by joint capsules and flexible ligamentstendons large muscles and highly sensitive nerves. Problems with the lumbar spine may cause pain and limited motion in your back or hips.
The lumbar spine is a part of your back comprised of five bones called vertebrae.
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