The lumbar spine includes five vertebrae that help with mobility and stability. Lumbar vertebrae are larger because they carry the load from your head down to the lower spine. The lumbar spine has a ...

Posteriorly, the bony arch encircles the spinal canal (Fig 1). It is composed of transverse processes, facet joints, two pedicles, two laminae, and a spinous process. In the lumbar spine, the bony ...