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  2. 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.

  3. 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 ...

  4. Sciatica - Wikipedia

    en.wikipedia.org/wiki/Sciatica

    The sciatic nerve comprises nerve roots L4, L5, S1, S2, and S3 in the spine. [26] These nerve roots merge in the pelvic cavity to form the sacral plexus and the sciatic nerve branches from that. Sciatica symptoms can occur when there is pathology anywhere along the course of these nerves. [27]

  5. Congenital vertebral anomaly - Wikipedia

    en.wikipedia.org/wiki/Congenital_vertebral_anomaly

    In sacralization, the L5-S1 intervertebral disc may be thin and narrow. This abnormality is found by X-ray. [citation needed] Sacralization of L6 means L6 attaches to S1 via a rudimentary joint. This L6-S1 joint creates additional motion, increasing the potential for motion-related stress and lower back pain/conditions.

  6. Impairment rating - Wikipedia

    en.wikipedia.org/wiki/Impairment_rating

    An individual's impairment rating is based on the direct restrictive impact of an impairment, whereas disability includes the indirect consequences one's impairment. [3] despite these differences impairment rating is commonly used by government organizations as a measure of disability, or to determine compensation owed due to an accident or ...

  7. 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.

  8. Neurogenic claudication - Wikipedia

    en.wikipedia.org/wiki/Neurogenic_claudication

    MRI of the lumbar spine showing spinal stenosis. Neurogenic claudication is one subtype of the clinical syndrome of lumbar spinal stenosis (LSS). [9] No gold standard diagnostic criteria currently exist, but evaluation and diagnosis is generally based on the patient history, physical exam, and medical imaging. [1]

  9. List of ICD-9 codes 290–319: mental disorders - Wikipedia

    en.wikipedia.org/wiki/List_of_ICD-9_codes_290...

    This is a shortened version of the fifth chapter of the ICD-9: Mental Disorders.It covers ICD codes 290 to 319.The full chapter can be found on pages 177 to 213 of Volume 1, which contains all (sub)categories of the ICD-9.