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8 Cards in this Set
- Front
- Back
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Which ligament narrows when it reaches the lumbar spine, causing weakness in the posteriolateral aspects of the vertebral bodies?
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posterior longitudinal ligament
(1/2 as wide at L4-L5 as it is at L1) |
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What is the primary flexor of the hip?
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iliacus
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What is spina bifida meningomyelocele?
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herniation of the meninges and nerve roots through the vertebral defect
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What 2 effects does L5 have on the sacrum?
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1. L5 sidebending causes an ipsilateral sacral oblique axis.
2. L5 rotation causes opposite rotation of the sacrum. |
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What is dysplastic spondylolisthesis?
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congenital defect involving deficiency of L5 or sacral neural arch and deficiencies of superior sacral facets
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What are the subtypes of Isthmic spondylolisthesis?
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A: fatigue fracture; <50 YO
B: enlongated pars; microfractures C: acute pars fracture; always with trauma |
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What is ankylosis?
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immobility d/t the fusion of the bones that form the joint
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What is the most common congenital anomaly in the lumbar?
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zygopophyseal tropism
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