Lumbar disc herniation occurs when the nucleus pulposus of an intervertebral disc protrudes through a tear in the surrounding annulus fibrosus. Symptoms include pain in the back, pain in the leg ...
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 ...
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