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  2. Spondylolisthesis - Wikipedia

    en.wikipedia.org/wiki/Spondylolisthesis

    Spondylolisthesis is when one spinal vertebra slips out of place compared to another. [1] While some medical dictionaries define spondylolisthesis specifically as the forward or anterior displacement of a vertebra over the vertebra inferior to it (or the sacrum ), [ 2 ] [ 3 ] it is often defined in medical textbooks as displacement in any ...

  3. Radiographic classification of osteoarthritis - Wikipedia

    en.wikipedia.org/wiki/Radiographic...

    Grade Findings I: Joint space narrowing, with or without subchondral sclerosis. Joint space narrowing is defined by this system as a joint space less than 3 mm, or less than half of the space in the other compartment, or less than half of the space of the homologous compartment of the other knee. II: Obliteration of the joint space III

  4. Retrolisthesis - Wikipedia

    en.wikipedia.org/wiki/Retrolisthesis

    Retrolisthesis can be classified as a form of spondylolisthesis, since spondylolisthesis is often defined in the literature as displacement in any direction. [1] [2] Yet, medical dictionaries usually define spondylolisthesis specifically as the forward or anterior displacement of a vertebra over the vertebra inferior to it (or the sacrum).

  5. Spondylitis - Wikipedia

    en.wikipedia.org/wiki/Spondylitis

    Spondylitis; Spondylitis due to Tropheryma whipplei: Contrast-enhanced, T1 weighted fat suppressed magnetic resonance imaging demonstrating contrast enhancing lesions of spondylitis in the first (L1) and second (L2), as well as fourth (L4) and fifth (L5) lumbar vertebra, sparing the intervertebral discs

  6. Disc herniation - Wikipedia

    en.wikipedia.org/wiki/Slipped_disc

    When the spine is straight, such as in standing or lying down, internal pressure is equalized on all parts of the discs. While sitting or bending to lift, internal pressure on a disc can move from 1.2 bar (17 psi) (lying down) to over 21 bar (300 psi) (lifting with a rounded back).

  7. Degenerative disc disease - Wikipedia

    en.wikipedia.org/wiki/Degenerative_disc_disease

    Whether a patient experiences pain or not largely depends on the location of the affected disc and the amount of pressure that is being put on the spinal column and surrounding nerve roots. Degenerative disc disease is one of the most common sources of back pain and affects approximately 30 million people every year. [3]

  8. Do I need to worry about space heaters? Here’s what experts ...

    www.aol.com/lifestyle/worry-space-heaters...

    Space heaters are repeatedly linked with tragedies. Local fire departments responded to an estimated average of 44,210 home structure fires caused by heating equipment, including space heaters ...

  9. Rupture disc - Wikipedia

    en.wikipedia.org/wiki/Rupture_disc

    A rupture disc (burst) Pressure-effect acting at a rupture disc A rupture disc, also known as a pressure safety disc, burst disc, bursting disc, or burst diaphragm, is a non-reclosing pressure relief safety device that, in most uses, protects a pressure vessel, equipment or system from overpressurization or potentially damaging vacuum conditions.

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