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  2. Sacral fracture - Wikipedia

    en.wikipedia.org/wiki/Sacral_fracture

    The Denis Classification System classified sacral fractures into three regions according to the part of the bone affected. The location of the fracture has a major influence on symptoms experienced. [3] [4] Zone 1 , may cause disruption to the nerve root of the fifth lumbar vertebra (L5) Zone 2 (sacral foramina), may cause sciatica

  3. Lumbar vertebrae - Wikipedia

    en.wikipedia.org/wiki/Lumbar_vertebrae

    The fifth lumbar vertebra is characterized by its body being much deeper in front than behind, which accords with the prominence of the sacrovertebral articulation; by the smaller size of its spinous process; by the wide interval between the inferior articular processes, and by the thickness of its transverse processes, which spring from the ...

  4. Sacrum - Wikipedia

    en.wikipedia.org/wiki/Sacrum

    The superior articular processes project from it on either side; they are oval, concave, directed backward and medialward, like the superior articular processes of a lumbar vertebra. They are attached to the body of the first sacral vertebra and to each ala, by short thick pedicles; on the upper surface of each pedicle is a vertebral notch ...

  5. Spinal column - Wikipedia

    en.wikipedia.org/wiki/Spinal_column

    The number of vertebrae in a region can vary but overall the number remains the same. In a human spinal column, there are normally 33 vertebrae. [3] The upper 24 pre-sacral vertebrae are articulating and separated from each other by intervertebral discs, and the lower nine are fused in adults, five in the sacrum and four in the coccyx, or tailbone.

  6. Lumbosacral joint - Wikipedia

    en.wikipedia.org/wiki/Lumbosacral_joint

    The lumbosacral joint is a joint of the body, between the last lumbar vertebra and the first sacral segment of the vertebral column. [1] [2] In some ways, calling it a "joint" (singular) is a misnomer, since the lumbosacral junction includes a disc between the lower lumbar vertebral body and the uppermost sacral vertebral body, as well as two lumbosacral facet joints (right and left ...

  7. Spinal fracture - Wikipedia

    en.wikipedia.org/wiki/Spinal_fracture

    Burst fracture – in which a vertebra breaks from a high-energy axial load; Compression fracture – a collapse of a vertebra, often resulting in the form of a wedge-shape due to larger compression anteriorly; Chance fracture – compression injury to the anterior portion of a vertebral body with concomitant distraction injury to posterior ...

  8. Spondylolysis - Wikipedia

    en.wikipedia.org/wiki/Spondylolysis

    The vast majority of spondylolysis occur in the lumbar vertebrae, however it can also be seen in cervical vertebrae. [2] The lumbar vertebra consist of a body, pedicle, lamina, pars interarticularis, transverse process, spinous process and superior and inferior articular facets, which form joints that link the vertebrae together. When examining ...

  9. 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 direction.

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