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34 Cards in this Set
- Front
- Back
backache and back pain
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pain in the back, if an injured person complains of back pain and is unable to move the limbs, the vertebral column may be fractured
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laminectomy
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excision of one or more spinous processes and the adjacent vertebral laminae, removal of the vertebral arch by transecting the pedicles, allows for access to the vertebral canal and spinal cord (or conus medullaris or cauda equina), used to relieve pressure on the spinal cord or nerve roots caused by a tumor, herniated disc or bone hypertrophy
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dislocation of the cervical vertebrae
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can be dislocated easier than other vertebrae bec. of horizontal articular facets, slight dislocation can occur w/o damaging spinal cord (bec. of large vertebral canal in cervical region)
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fracture and dislocation of the atlas
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vertical forces can cause fracture in the atlas, if fierce enough will cause the transverse ligament to rupture (called Jefferson or burst fracture)
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fracture and dislocation of the axis
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one of the most common injuries of the cervical vertebrae, usually occurs in the column formed by the superior and inferior articular facets
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traumatic spondylolysis of C2
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occurs as a result of hyperextesion of the head on the neck (similar to hanging)
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quadriplegia
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paralysis of all four limbs
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fracture of the dens
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may result from a horizontal blow to the head or loss of bone mass (osteopenia)
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T12 vertebrae
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most commonly fractured vertebrae
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lumar spinal stenosis
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narrow vertebral foramen in one or more lumbar vertebrae, may be hereditary, makes a person more vulnerable to age-related degenerative changes such as IV disc bulging, , may cause compression of one or more of the spinal nerve roots
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cervical ribs
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developmental costal element of C7 becomes enlarged, the extra rib may elevate and place pressure on structures that emerge from the superior thoracic aperture, may be a cause of thoracic outlet syndrome
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spina bifida occulta
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laminae of L5 fail to develop normally and fuse posterior to the vertebral canal, not associated with back problems though
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spina bifida cystica
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one or more vertebral arches fail to develop completely, associated with herniation of the meninges and/or spinal cord, surological symptoms are present (paralysis of limbs, disturbance in bladder)
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neural tube defects
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closure of the neural tube during the 4th week of embryonic development
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variations in vertebrae
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usually excess in males and shortage in females
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aging of the IV Discs
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nuclei pulposi dehydrate and lose elastin and gain collagen, become stiffer and more resistant to deformation, nucleus pulposis and annulus fibrosis begin to merge
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herniation (or pertrusion) of the nucleus pulposis
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can occur where there is excessive pressure on the disc, usually occur in a posterlateral direction, posterior longitudinal ligament prevents the polposis from going straight back to protect equina and spinal cord, in a herniation, the spinal nerve hit is the one below the number, cause of low back and low limb pain (localized)
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fracture of the dens
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40% of axis fractures, most commonly fractured at the base, often do not reunite bec. the transverse ligament of the atlas becomes interposed between fragments and bec. the separated fragment no longer has a blood supply, resulting in avascular necrosis, also common to have fracture of the vertebral body inferior to the dens (these heal more readily bec. it still has vascular supply)
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rupture of the transverse ligament of the atlas
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sets dens free, more likely to cause spinal cord compression than that resulting from fracture of the dens, explains why some patients with anterior displacement of the atlas may be relatively asymptomatic until a large degree of movement occurs
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crush or compression fracture
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occurs at the body of the vertebrae, caused by sudden forcefull flexion
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hyperextension injury of the neck
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sudden, forceful extension of the neck, likely to injure posterior parts of the vertebrae, also occurs from whiplash, causes sever stretching or tearing in the anterior longitudinal ligament
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compression of the lumbar spinal nerve roots
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lumbar spinal nerves INC in size from superior to inferior while the IV foramina decrease, this causes an increase in the chance that these nerve roots will be compressed if herniation of the nucleus pulposis occurs
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lumbar spinal puncture (spinal tap)
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the extraction or sampling of CSF from the lumbar cistern, used in evaluating CNS disorders, patient flexes vertebral column to allow insertion of a needle between lamina and spinous process, puncture dura mater and arachnoid mater
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meningitis
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may alter the cells in the CSF or change the concentration of its chemical constituents
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spinal block
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insertion of anesthesia into the CSF
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epdirual block
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anesthesia is injected into the epidural space
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ischemia of the spinal cord
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fractures or dislocations may interfere with the blood supply to the spinal cord, deficiency of blood supply (ischemia) affects its fxn and can lead to muscle weakness and paralysis
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lumbar spondylosis
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degenerative joint disease that causes localized pain and stiffness
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back sprain
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an injury in which only ligamentous tissue is involved
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back strain
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results from overly strong muscular contraction, involves some degree of stretching or microscopic tearing of muscle fibers
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back spasm
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sudden involuntary contraction of one or more muscle groups
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arteriosclerosis
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blood flow through cervical vertebral arteries is reduced, prolonged turning of the head may cause light-headedness or dizziness
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spondylolysis
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stress fracture of pars interarticularis, can be caused by repeated stress to the spine, bilateral spondylolysis can cause spondylolithesis
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anterior spinal artery syndrome
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blockage of anterior spinal artery
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