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  2. Disc herniation - Wikipedia

    en.wikipedia.org/wiki/Disc_herniation

    The majority of disc herniations occur in the lumbar spine (95% at L4–L5 or L5S1). [21] The second most common site is the cervical region (C5–C6, C6–C7). The thoracic region accounts for only 1–2% of cases.

  3. Retrolisthesis - Wikipedia

    en.wikipedia.org/wiki/Retrolisthesis

    These cannot be determined by plain films, as the x-ray passes through the soft tissue. A study by Giles et al., stated that sixteen of the thirty patients (53%) had retrolisthesis of L5 on S1 ranging from 2–9 mm; these patients had either intervertebral disc bulging or protrusion on CT examination ranging from 3–7 mm into the spinal canal.

  4. Degenerative disc disease - Wikipedia

    en.wikipedia.org/wiki/Degenerative_disc_disease

    Degenerative disc disease; Other names: Degenerative disc disorder, intervertebral disc degeneration: Degenerated disc between C5 and C6 (vertebra at the top of the picture is C2), with osteophytes anteriorly (to the left) on the lower portion of the C5 and upper portion of the C6 vertebral body. Specialty: Orthopedics: Risk factors: Connective ...

  5. Cauda equina syndrome - Wikipedia

    en.wikipedia.org/wiki/Cauda_equina_syndrome

    After the conus medullaris (near lumbar vertebral levels 1 (L1) and 2 (L2), occasionally lower), the spinal canal contains a bundle of nerve fibers (the cauda equina or "horse-tail") that branches off the lower end of the spinal cord and contains the nerve roots from L1–L5 and S1–S5. The nerve roots from L4–S4 join in the sacral plexus ...

  6. Bertolotti's syndrome - Wikipedia

    en.wikipedia.org/wiki/Bertolotti's_syndrome

    This loss of motion will then be compensated for at segments superior to the transitional vertebra resulting in accelerated degeneration and strain through the L4 disc level which can become symptomatic and inflame the adjacent L5 nerve root resulting in "sciatic" or radicular pain patterns. Scoliosis is frequently found to be associated. [4]

  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. Modic changes - Wikipedia

    en.wikipedia.org/wiki/Modic_changes

    Since the disc is an avascular structure, it is an ideal environment for the growth of anaerobic bacteria. Propionibacterium acnes bacteria secrete propionic acid, which can dissolve fatty bone marrow and bone. Therefore, it was hypothesized that diffusion of propionic acid from the disc into the vertebrae results in bone oedema, i.e. Modic ...

  9. Lumbar disc disease - Wikipedia

    en.wikipedia.org/wiki/Lumbar_disc_disease

    Lumbar disc disease is the drying out of the spongy interior matrix of an intervertebral disc in the spine. Many physicians and patients use the term lumbar disc disease to encompass several different causes of back pain or sciatica. In this article, the term is used to describe a lumbar herniated disc.

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