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 ...
Lumbar spinal stenosis (LSS) is the narrowing of the central canal and, often, the lateral recess due to facet joint hypertrophy, thickening and bulging of the ligamentum flavum, bulging of an ...