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  2. Craniocervical instability - Wikipedia

    en.wikipedia.org/wiki/Craniocervical_instability

    Symptoms are frequently worsened by a Valsalva maneuver, or by being upright for long periods of time. The reason that being upright is problematic is that gravity allows increased interaction between the brain stem and the top of the spinal column, increasing symptoms. Lying in the supine position can bring short-term relief. Lying supine ...

  3. Klippel–Feil syndrome - Wikipedia

    en.wikipedia.org/wiki/Klippel–Feil_syndrome

    In 1953, further complications were later reported by McRae; flexion and extension is concentrated within the C1 and C2 vertebrae. As with aging, the odontoid process can become hypermobile, narrowing the space where the spinal cord and brain stem travel (spinal stenosis). Type II—Long fusion below C2 with an abnormal occipital-cervical junction.

  4. Cervicocranial syndrome - Wikipedia

    en.wikipedia.org/wiki/Cervicocranial_syndrome

    The craniocervical junction region comprises C1 (atlas), C2 (axis) and the lower part of the skull: occipital bone. [19] In case of tumor : chordoma , in the craniocervical junction region, this leads to pressure on the cervical spinal nerves , which results in their improper functioning of the cervical spinal nerves.

  5. Cordotomy - Wikipedia

    en.wikipedia.org/wiki/Cordotomy

    The spinothalamic tract is normally divided at the level C1-C2. Open cordotomy, which requires a laminectomy (removal of part of one or more vertebrae), takes place under general anaesthetic and has a longer recovery time and a higher risk of side-effects including permanent weakness. However, it is still sometimes used where percutaneous ...

  6. Spinal fusion - Wikipedia

    en.wikipedia.org/wiki/Spinal_fusion

    Spinal fusion, also called spondylodesis or spondylosyndesis, is a surgery performed by orthopaedic surgeons or neurosurgeons that joins two or more vertebrae. [1] This procedure can be performed at any level in the spine (cervical, thoracic, lumbar, or sacral) and prevents any movement between the fused vertebrae.

  7. Laminectomy - Wikipedia

    en.wikipedia.org/wiki/Laminectomy

    The success rate of a laminectomy depends on the specific reason for the operation, as well as proper patient selection and the surgeon's technical ability. The first laminectomy was performed in 1887 by Victor Alexander Haden Horsley , [ 2 ] a professor of surgery at University College London .

  8. Congenital vertebral anomaly - Wikipedia

    en.wikipedia.org/wiki/Congenital_vertebral_anomaly

    Lumbosacral transitional vertebrae consist of the process of the last lumbar vertebra fusing with the first sacral segment. [1] While only around 10 percent of adults have a spinal abnormality due to genetics, a sixth lumbar vertebra is one of the more common abnormalities. [2] Sacralization of the L5 vertebra is seen at the lower right of the ...

  9. Atlanto-occipital dislocation - Wikipedia

    en.wikipedia.org/wiki/Atlanto-occipital_dislocation

    The Hangman's fracture which is a fracture of the C2 vertebral body or dens of the cervical spine upon which the skull base sits to allow the head to rotate, can also be associated with atlanto-occipital dislocation. Despite its eponym, the fracture is not usually associated with a hanging mechanism of injury.

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