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This informative visual guide explores the anatomy of the lumbosacral region, including the vertebral disks, facet joints, and nerve roots. Learn about common conditions like herniated disks and compressed nerve roots, and their impact on the body.
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Figure 1 The location of the lumbosacral region in the body L1 Lumbosacral region
Figure 2 L1 L2 L2-3 disk L3 L3-4 disk L4 L4-5 disk L5 The lumbar vertebrae with intervertebral disks
Figure 3 Spinous process Facet Lamina Transverse process Spinal canal (vertebral foramen) Pedicle Body A lumbar vertebra – top view
Figure 4 Sacroiliac joint Pelvis Sacrum Coccyx The sacrum and pelvis viewed from the front
Figure 5 Spinous process Interverebral disk Facet joint Vertebral body Intervertebral foramen Two lumbar vertebrae – side view
Figure 6 Posterior longitudinal ligament
Figure 7 Annulus Fibrosus Nucleus pulposus Transverse section of the interior of an intervertebral disk
Figure 8 Nucleus pulposus Annulus fibrosis Herniation of the nucleus pulposus through a tear in the annulus fibrosis
Figure 9 Nerve root compressed in the intervertebral foramen Transverse process Herniated disk Spinous process Herniated disk compressing the nerve roots existing through the intervertebral foramen
