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  2. Lumbar spinal stenosis - Wikipedia

    en.wikipedia.org/wiki/Lumbar_spinal_stenosis

    MRI of a lumbar spinal stenosis L4-L5. L4-L5 antherolisthesis of grade I. Hypertrophy of interspinous ligaments in relation to Baastrup's disease. 67 years old man. MRI is the preferred method of diagnosing and evaluating spinal stenosis of all areas of the spine, including cervical, thoracic, and lumbar.

  3. Spinal stenosis - Wikipedia

    en.wikipedia.org/wiki/Spinal_stenosis

    Such severe spinal stenosis symptoms are virtually absent in lumbar stenosis, however, as the spinal cord terminates at the top end of the adult lumbar spine, with only nerve roots (cauda equina) continuing further down. [15] Cervical spinal stenosis is a condition involving narrowing of the spinal canal at the level of the neck.

  4. Lumbar vertebrae - Wikipedia

    en.wikipedia.org/wiki/Lumbar_vertebrae

    In human anatomy, the five vertebrae are between the rib cage and the pelvis.They are the largest segments of the vertebral column and are characterized by the absence of the foramen transversarium within the transverse process (since it is only found in the cervical region) and by the absence of facets on the sides of the body (as found only in the thoracic region).

  5. Bertolotti's syndrome - Wikipedia

    en.wikipedia.org/wiki/Bertolotti's_syndrome

    Bertolotti's syndrome is characterized by sacralization of the lowest lumbar vertebral body and lumbarization of the uppermost sacral segment. It involves a total or partial unilateral or bilateral fusion of the transverse process of the lowest lumbar vertebra to the sacrum, leading to the formation of a transitional 5th lumbar vertebra.

  6. Thecal sac - Wikipedia

    en.wikipedia.org/wiki/Thecal_sac

    It is the space within the thecal sac which extends from below the end of the spinal cord (the conus medularis), typically at the level of the first to second lumbar vertebrae down to tapering of the dura at the level of the second sacral vertebra. The dura is pierced with a needle during a lumbar puncture (spinal tap).

  7. Spondylolisthesis - Wikipedia

    en.wikipedia.org/wiki/Spondylolisthesis

    Degenerative spondylolisthesis at L5-S1. (A) CT sagittal view of a low grade slip. (B) Lateral radiograph pre-operative intervention. (C) Surgically treated with L5S1 decompression, instrumented fusion and placement of an interbody graft between L5 and S1. Both minimally invasive and open surgical techniques are used to treat anterolisthesis ...

  8. Spinal decompression - Wikipedia

    en.wikipedia.org/wiki/Spinal_decompression

    Spinal decompression is the relief of pressure on the spinal cord or on one or more compressed nerve roots passing through or exiting the spinal column. [1] Decompression of the spinal neural elements is a key component in treating spinal radiculopathy , myelopathy and claudication .

  9. Napoleon hat sign - Wikipedia

    en.wikipedia.org/wiki/Napoleon_hat_sign

    The Napoleon hat sign (most commonly called "inverted Napoleon hat") is a radiologic sign observed on frontal radiographs of the spine at the level of the fifth lumbar vertebra (L5) and the sacrum (S1) that indicates the presence of severe spondylolisthesis and/or severe lumbar lordosis.